./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 6b4ec56b 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 10:34:56,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:34:56,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:34:56,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:34:56,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:34:56,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:34:56,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:34:56,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:34:56,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:34:56,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:34:56,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:34:56,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:34:56,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:34:56,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:34:56,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:34:56,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:34:56,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:34:56,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:34:56,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:34:56,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:34:56,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:34:56,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:34:56,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:34:56,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:34:56,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:34:56,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:34:56,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:34:56,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:34:56,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:34:56,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:34:56,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:34:56,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:34:56,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:34:56,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:34:56,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:34:56,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:34:56,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:34:56,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:34:56,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:34:56,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:34:56,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:34:56,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:34:56,315 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:34:56,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:34:56,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:34:56,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:34:56,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:34:56,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:34:56,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:34:56,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:34:56,319 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:34:56,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:34:56,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:34:56,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:34:56,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:34:56,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:34:56,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:34:56,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:34:56,323 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:34:56,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:34:56,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:34:56,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:34:56,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:34:56,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:34:56,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:34:56,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:34:56,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:34:56,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:34:56,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:34:56,326 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:34:56,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:34:56,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:34:56,328 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2022-11-20 10:34:56,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:34:56,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:34:56,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:34:56,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:34:56,645 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:34:56,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-20 10:34:59,674 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:35:00,291 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:35:00,292 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-20 10:35:00,328 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/data/b9c18c8e1/050e21dea45f4c78a65c779afc35ac30/FLAG44179ae01 [2022-11-20 10:35:00,347 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/data/b9c18c8e1/050e21dea45f4c78a65c779afc35ac30 [2022-11-20 10:35:00,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:35:00,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:35:00,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:35:00,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:35:00,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:35:00,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:00" (1/1) ... [2022-11-20 10:35:00,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49182af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:00, skipping insertion in model container [2022-11-20 10:35:00,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:00" (1/1) ... [2022-11-20 10:35:00,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:35:00,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:35:00,776 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-20 10:35:00,787 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-20 10:35:01,905 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,906 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,907 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,907 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,909 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,922 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,923 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,924 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,925 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,927 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,928 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,929 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:01,930 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,296 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 10:35:02,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 10:35:02,299 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 10:35:02,300 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 10:35:02,301 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 10:35:02,302 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 10:35:02,303 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 10:35:02,304 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 10:35:02,304 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 10:35:02,305 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 10:35:02,478 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 10:35:02,500 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,500 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,506 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,512 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,591 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,593 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,593 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,594 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,594 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,597 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,598 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,599 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,599 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,599 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,600 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,600 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,600 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,603 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,604 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,604 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,604 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,608 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,608 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,616 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,618 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,618 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:35:02,670 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:35:02,696 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-20 10:35:02,697 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-20 10:35:02,751 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,752 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,752 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,753 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,754 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,772 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,772 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,773 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,774 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,776 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,777 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,778 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,778 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,837 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 10:35:02,838 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 10:35:02,838 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 10:35:02,839 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 10:35:02,840 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 10:35:02,841 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 10:35:02,842 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 10:35:02,843 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 10:35:02,843 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 10:35:02,844 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 10:35:02,888 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 10:35:02,908 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,909 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,911 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,917 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,954 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,955 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,955 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,956 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,956 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,957 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,957 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,958 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,959 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,959 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,959 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,960 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,960 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,961 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,961 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,961 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,962 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,965 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,965 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,975 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,975 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,976 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:35:02,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:35:03,260 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:35:03,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03 WrapperNode [2022-11-20 10:35:03,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:35:03,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:35:03,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:35:03,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:35:03,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (1/1) ... [2022-11-20 10:35:03,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (1/1) ... [2022-11-20 10:35:03,413 INFO L138 Inliner]: procedures = 697, calls = 1904, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 839 [2022-11-20 10:35:03,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:35:03,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:35:03,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:35:03,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:35:03,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (1/1) ... [2022-11-20 10:35:03,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (1/1) ... [2022-11-20 10:35:03,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (1/1) ... [2022-11-20 10:35:03,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (1/1) ... [2022-11-20 10:35:03,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (1/1) ... [2022-11-20 10:35:03,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (1/1) ... [2022-11-20 10:35:03,540 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (1/1) ... [2022-11-20 10:35:03,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (1/1) ... [2022-11-20 10:35:03,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:35:03,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:35:03,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:35:03,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:35:03,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (1/1) ... [2022-11-20 10:35:03,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:35:03,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:03,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:35:03,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:35:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-20 10:35:03,656 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-20 10:35:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-20 10:35:03,656 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-20 10:35:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:35:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-20 10:35:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-20 10:35:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-20 10:35:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-20 10:35:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 10:35:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 10:35:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:35:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 10:35:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 10:35:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 10:35:03,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 10:35:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:35:03,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:35:03,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:35:03,663 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-20 10:35:03,664 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-20 10:35:03,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:35:03,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:35:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 10:35:03,666 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 10:35:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-11-20 10:35:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-11-20 10:35:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 10:35:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 10:35:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-20 10:35:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-20 10:35:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-20 10:35:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-20 10:35:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-20 10:35:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-20 10:35:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 10:35:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 10:35:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-20 10:35:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-20 10:35:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:35:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:35:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2022-11-20 10:35:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2022-11-20 10:35:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:35:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-20 10:35:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-20 10:35:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 10:35:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 10:35:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 10:35:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 10:35:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:35:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-20 10:35:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-20 10:35:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 10:35:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 10:35:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 10:35:03,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 10:35:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:35:04,089 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:35:04,091 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:35:05,665 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:35:05,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:35:05,677 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 10:35:05,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:05 BoogieIcfgContainer [2022-11-20 10:35:05,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:35:05,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:35:05,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:35:05,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:35:05,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:35:00" (1/3) ... [2022-11-20 10:35:05,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5040c183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:05, skipping insertion in model container [2022-11-20 10:35:05,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:03" (2/3) ... [2022-11-20 10:35:05,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5040c183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:05, skipping insertion in model container [2022-11-20 10:35:05,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:05" (3/3) ... [2022-11-20 10:35:05,689 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2022-11-20 10:35:05,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:35:05,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:35:05,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:35:05,795 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;@3e5863e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:35:05,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:35:05,802 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) [2022-11-20 10:35:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 10:35:05,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:05,834 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] [2022-11-20 10:35:05,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:05,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1627804587, now seen corresponding path program 1 times [2022-11-20 10:35:05,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:05,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110524494] [2022-11-20 10:35:05,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:05,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:35:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:35:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:35:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 10:35:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:35:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 10:35:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:35:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:35:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 10:35:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 10:35:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:35:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:35:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 10:35:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:35:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:35:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:35:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:35:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:35:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 10:35:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 10:35:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 10:35:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 10:35:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:06,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 10:35:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 10:35:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:07,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 10:35:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 10:35:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-20 10:35:07,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:07,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110524494] [2022-11-20 10:35:07,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110524494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:07,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:07,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:35:07,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160063589] [2022-11-20 10:35:07,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:07,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:35:07,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:35:07,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:35:07,112 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) [2022-11-20 10:35:08,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:08,871 INFO L93 Difference]: Finished difference Result 731 states and 1164 transitions. [2022-11-20 10:35:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:35:08,873 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 [2022-11-20 10:35:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:08,887 INFO L225 Difference]: With dead ends: 731 [2022-11-20 10:35:08,888 INFO L226 Difference]: Without dead ends: 423 [2022-11-20 10:35:08,905 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 [2022-11-20 10:35:08,908 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 130 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:08,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 582 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 10:35:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-20 10:35:08,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 321. [2022-11-20 10:35:08,991 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) [2022-11-20 10:35:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 439 transitions. [2022-11-20 10:35:08,997 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 439 transitions. Word has length 156 [2022-11-20 10:35:08,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:08,997 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 439 transitions. [2022-11-20 10:35:08,998 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) [2022-11-20 10:35:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 439 transitions. [2022-11-20 10:35:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 10:35:09,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:09,004 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] [2022-11-20 10:35:09,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:35:09,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:09,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1159929871, now seen corresponding path program 1 times [2022-11-20 10:35:09,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:09,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060735614] [2022-11-20 10:35:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:09,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:35:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:35:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:35:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 10:35:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:35:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 10:35:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:35:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:35:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 10:35:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 10:35:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:35:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:35:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 10:35:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:35:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:35:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:35:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:35:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:35:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 10:35:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 10:35:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 10:35:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 10:35:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 10:35:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 10:35:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 10:35:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 10:35:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-20 10:35:10,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:10,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060735614] [2022-11-20 10:35:10,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060735614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:10,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828772965] [2022-11-20 10:35:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:10,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:10,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:10,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:10,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:35:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:10,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:35:10,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-20 10:35:10,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:10,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828772965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:10,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:10,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-20 10:35:10,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794559897] [2022-11-20 10:35:10,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:10,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:35:10,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:10,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:35:10,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:35:10,698 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) [2022-11-20 10:35:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:10,995 INFO L93 Difference]: Finished difference Result 596 states and 820 transitions. [2022-11-20 10:35:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:35:10,996 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 [2022-11-20 10:35:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:10,999 INFO L225 Difference]: With dead ends: 596 [2022-11-20 10:35:10,999 INFO L226 Difference]: Without dead ends: 323 [2022-11-20 10:35:11,001 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 [2022-11-20 10:35:11,002 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 [2022-11-20 10:35:11,003 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] [2022-11-20 10:35:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-20 10:35:11,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-11-20 10:35:11,042 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) [2022-11-20 10:35:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 444 transitions. [2022-11-20 10:35:11,049 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 444 transitions. Word has length 156 [2022-11-20 10:35:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:11,051 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 444 transitions. [2022-11-20 10:35:11,052 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) [2022-11-20 10:35:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 444 transitions. [2022-11-20 10:35:11,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-20 10:35:11,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:11,061 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] [2022-11-20 10:35:11,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:35:11,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:11,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:11,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:11,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1288218285, now seen corresponding path program 1 times [2022-11-20 10:35:11,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:11,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417112808] [2022-11-20 10:35:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:11,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:11,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:35:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:35:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:35:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:11,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 10:35:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:11,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:35:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:11,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 10:35:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:11,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:35:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:11,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:35:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 10:35:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 10:35:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:35:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:35:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 10:35:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:35:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:35:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:35:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:35:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 10:35:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 10:35:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 10:35:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 10:35:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 10:35:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 10:35:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 10:35:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 10:35:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-20 10:35:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 10:35:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,333 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-20 10:35:12,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:12,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417112808] [2022-11-20 10:35:12,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417112808] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:12,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335891570] [2022-11-20 10:35:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:12,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:12,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:12,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:12,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:35:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2376 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:35:12,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-20 10:35:13,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:13,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335891570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:13,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:13,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-20 10:35:13,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703486821] [2022-11-20 10:35:13,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:13,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:35:13,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:13,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:35:13,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:35:13,134 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) [2022-11-20 10:35:13,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:13,673 INFO L93 Difference]: Finished difference Result 619 states and 867 transitions. [2022-11-20 10:35:13,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:35:13,673 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 [2022-11-20 10:35:13,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:13,677 INFO L225 Difference]: With dead ends: 619 [2022-11-20 10:35:13,677 INFO L226 Difference]: Without dead ends: 344 [2022-11-20 10:35:13,679 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 [2022-11-20 10:35:13,680 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 [2022-11-20 10:35:13,680 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] [2022-11-20 10:35:13,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-20 10:35:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 342. [2022-11-20 10:35:13,735 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) [2022-11-20 10:35:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-20 10:35:13,739 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 164 [2022-11-20 10:35:13,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:13,742 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-20 10:35:13,742 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) [2022-11-20 10:35:13,742 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-20 10:35:13,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:35:13,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:13,746 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] [2022-11-20 10:35:13,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:13,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:13,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:13,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1645223367, now seen corresponding path program 1 times [2022-11-20 10:35:13,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:13,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898184372] [2022-11-20 10:35:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:13,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:14,037 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:35:14,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518542906] [2022-11-20 10:35:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:14,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:14,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:14,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:14,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:35:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:14,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:35:14,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-20 10:35:14,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:14,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:14,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898184372] [2022-11-20 10:35:14,803 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:35:14,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518542906] [2022-11-20 10:35:14,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518542906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:14,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:14,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:35:14,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123093189] [2022-11-20 10:35:14,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:14,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:35:14,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:14,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:35:14,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:35:14,807 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) [2022-11-20 10:35:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:15,202 INFO L93 Difference]: Finished difference Result 644 states and 916 transitions. [2022-11-20 10:35:15,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:35:15,203 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 [2022-11-20 10:35:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:15,207 INFO L225 Difference]: With dead ends: 644 [2022-11-20 10:35:15,207 INFO L226 Difference]: Without dead ends: 350 [2022-11-20 10:35:15,209 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 [2022-11-20 10:35:15,210 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 [2022-11-20 10:35:15,210 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] [2022-11-20 10:35:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-20 10:35:15,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2022-11-20 10:35:15,247 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) [2022-11-20 10:35:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-20 10:35:15,256 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 179 [2022-11-20 10:35:15,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:15,256 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-20 10:35:15,257 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) [2022-11-20 10:35:15,257 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-20 10:35:15,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-20 10:35:15,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:15,262 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] [2022-11-20 10:35:15,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:15,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 10:35:15,471 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:15,474 INFO L85 PathProgramCache]: Analyzing trace with hash 706739126, now seen corresponding path program 1 times [2022-11-20 10:35:15,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:15,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500874275] [2022-11-20 10:35:15,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:15,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:35:15,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512228290] [2022-11-20 10:35:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:15,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:15,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:15,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:15,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:35:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:16,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:35:16,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-20 10:35:16,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:16,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:16,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500874275] [2022-11-20 10:35:16,323 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:35:16,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512228290] [2022-11-20 10:35:16,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512228290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:16,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:16,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:35:16,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004118380] [2022-11-20 10:35:16,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:16,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:35:16,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:16,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:35:16,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:35:16,327 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) [2022-11-20 10:35:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:17,003 INFO L93 Difference]: Finished difference Result 654 states and 929 transitions. [2022-11-20 10:35:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:35:17,004 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 [2022-11-20 10:35:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:17,006 INFO L225 Difference]: With dead ends: 654 [2022-11-20 10:35:17,007 INFO L226 Difference]: Without dead ends: 360 [2022-11-20 10:35:17,009 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 [2022-11-20 10:35:17,009 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 [2022-11-20 10:35:17,010 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] [2022-11-20 10:35:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-20 10:35:17,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 342. [2022-11-20 10:35:17,029 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) [2022-11-20 10:35:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-20 10:35:17,032 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 195 [2022-11-20 10:35:17,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:17,033 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-20 10:35:17,034 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) [2022-11-20 10:35:17,034 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-20 10:35:17,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-20 10:35:17,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:17,037 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] [2022-11-20 10:35:17,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:17,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:17,249 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:17,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:17,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1820952612, now seen corresponding path program 2 times [2022-11-20 10:35:17,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:17,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416381350] [2022-11-20 10:35:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:17,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:17,332 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:35:17,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197294355] [2022-11-20 10:35:17,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:35:17,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:17,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:17,334 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:17,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:35:18,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:35:18,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:35:18,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 379 conjunts are in the unsatisfiable core [2022-11-20 10:35:18,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:19,299 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:35:19,300 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 [2022-11-20 10:35:23,103 INFO L217 Elim1Store]: Index analysis took 221 ms [2022-11-20 10:35:27,085 INFO L321 Elim1Store]: treesize reduction 652, result has 50.0 percent of original size [2022-11-20 10:35:27,088 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 [2022-11-20 10:36:35,437 WARN L718 sPolynomialRelations]: Constructing 2147483647(two to the power of 163 dual juncts. [2022-11-20 10:36:35,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:35,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416381350] [2022-11-20 10:36:35,438 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:36:35,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197294355] [2022-11-20 10:36:35,439 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-20 10:36:35,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:35,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 10:36:35,650 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) [2022-11-20 10:36:35,654 INFO L158 Benchmark]: Toolchain (without parser) took 95302.59ms. Allocated memory was 155.2MB in the beginning and 687.9MB in the end (delta: 532.7MB). Free memory was 103.7MB in the beginning and 303.1MB in the end (delta: -199.4MB). Peak memory consumption was 436.4MB. Max. memory is 16.1GB. [2022-11-20 10:36:35,654 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:36:35,654 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2908.27ms. Allocated memory is still 155.2MB. Free memory was 103.1MB in the beginning and 95.1MB in the end (delta: 8.0MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. [2022-11-20 10:36:35,654 INFO L158 Benchmark]: Boogie Procedure Inliner took 152.60ms. Allocated memory is still 155.2MB. Free memory was 95.1MB in the beginning and 84.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:36:35,654 INFO L158 Benchmark]: Boogie Preprocessor took 138.76ms. Allocated memory is still 155.2MB. Free memory was 84.6MB in the beginning and 77.1MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 10:36:35,655 INFO L158 Benchmark]: RCFGBuilder took 2124.63ms. Allocated memory was 155.2MB in the beginning and 218.1MB in the end (delta: 62.9MB). Free memory was 77.1MB in the beginning and 130.6MB in the end (delta: -53.5MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. [2022-11-20 10:36:35,655 INFO L158 Benchmark]: TraceAbstraction took 89972.74ms. Allocated memory was 218.1MB in the beginning and 687.9MB in the end (delta: 469.8MB). Free memory was 129.6MB in the beginning and 303.1MB in the end (delta: -173.5MB). Peak memory consumption was 397.1MB. Max. memory is 16.1GB. [2022-11-20 10:36:35,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2908.27ms. Allocated memory is still 155.2MB. Free memory was 103.1MB in the beginning and 95.1MB in the end (delta: 8.0MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 152.60ms. Allocated memory is still 155.2MB. Free memory was 95.1MB in the beginning and 84.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 138.76ms. Allocated memory is still 155.2MB. Free memory was 84.6MB in the beginning and 77.1MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2124.63ms. Allocated memory was 155.2MB in the beginning and 218.1MB in the end (delta: 62.9MB). Free memory was 77.1MB in the beginning and 130.6MB in the end (delta: -53.5MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. * TraceAbstraction took 89972.74ms. Allocated memory was 218.1MB in the beginning and 687.9MB in the end (delta: 469.8MB). Free memory was 129.6MB in the beginning and 303.1MB in the end (delta: -173.5MB). Peak memory consumption was 397.1MB. 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. [2022-11-20 10:36:35,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 10:36:38,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:36:38,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:36:38,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:36:38,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:36:38,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:36:38,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:36:38,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:36:38,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:36:38,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:36:38,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:36:38,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:36:38,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:36:38,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:36:38,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:36:38,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:36:38,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:36:38,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:36:38,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:36:38,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:36:38,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:36:38,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:36:38,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:36:38,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:36:38,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:36:38,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:36:38,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:36:38,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:36:38,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:36:38,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:36:38,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:36:38,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:36:38,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:36:38,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:36:38,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:36:38,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:36:38,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:36:38,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:36:38,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:36:38,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:36:38,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:36:38,217 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 10:36:38,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:36:38,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:36:38,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:36:38,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:36:38,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:36:38,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:36:38,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:36:38,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:36:38,266 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:36:38,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:36:38,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:36:38,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:36:38,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:36:38,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:36:38,269 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:36:38,269 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:36:38,269 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:36:38,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:36:38,269 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:36:38,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:36:38,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:36:38,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:36:38,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:36:38,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:36:38,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:36:38,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:36:38,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:36:38,272 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:36:38,272 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:36:38,272 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:36:38,272 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:36:38,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:36:38,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:36:38,273 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2022-11-20 10:36:38,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:36:38,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:36:38,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:36:38,714 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:36:38,714 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:36:38,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-20 10:36:41,808 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:36:42,385 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:36:42,388 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-20 10:36:42,421 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/data/a9b87635c/d8d1e9b36ab04b4eaee4e78a7c928070/FLAG2a7a43a1e [2022-11-20 10:36:42,440 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/data/a9b87635c/d8d1e9b36ab04b4eaee4e78a7c928070 [2022-11-20 10:36:42,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:36:42,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:36:42,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:36:42,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:36:42,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:36:42,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:42" (1/1) ... [2022-11-20 10:36:42,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588443c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:42, skipping insertion in model container [2022-11-20 10:36:42,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:42" (1/1) ... [2022-11-20 10:36:42,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:36:42,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:36:42,830 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-20 10:36:42,837 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-20 10:36:43,887 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,887 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,888 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,888 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,889 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,901 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,903 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,907 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,909 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,912 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,915 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,917 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:43,918 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,389 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 10:36:44,394 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 10:36:44,396 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 10:36:44,401 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 10:36:44,402 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 10:36:44,403 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 10:36:44,404 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 10:36:44,405 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 10:36:44,417 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 10:36:44,418 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 10:36:44,587 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 10:36:44,622 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,623 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,628 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,636 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,703 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,704 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,705 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,705 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,705 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,706 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,706 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,707 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,707 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,708 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,708 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,708 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,709 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,712 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,712 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,713 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,713 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,733 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,734 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,742 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,744 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,744 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:36:44,792 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 10:36:44,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:36:44,834 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-20 10:36:44,834 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-20 10:36:44,917 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,918 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,920 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,920 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,921 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,941 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,942 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,943 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,944 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,947 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,951 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,952 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:44,952 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,024 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 10:36:45,029 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 10:36:45,030 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 10:36:45,031 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 10:36:45,035 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 10:36:45,036 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 10:36:45,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 10:36:45,039 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 10:36:45,040 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 10:36:45,041 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 10:36:45,095 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 10:36:45,118 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,120 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,121 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,126 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,166 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,167 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,167 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,168 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,168 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,168 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,198 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,198 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,199 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,199 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,199 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,199 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,200 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,200 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,201 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,201 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,201 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,203 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,204 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,209 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,210 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,210 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:36:45,241 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:36:45,266 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-20 10:36:45,267 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_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-20 10:36:45,296 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,297 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,298 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,298 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,299 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,303 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,304 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,305 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,305 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,306 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,307 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,307 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,307 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,350 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 10:36:45,351 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 10:36:45,351 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 10:36:45,352 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 10:36:45,353 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 10:36:45,354 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 10:36:45,354 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 10:36:45,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 10:36:45,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 10:36:45,356 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 10:36:45,405 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 10:36:45,419 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,420 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,421 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,425 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,456 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,463 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,466 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,466 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,467 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,467 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,468 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,468 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,469 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,469 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,470 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,470 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,472 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,474 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,474 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,475 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,475 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,479 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,480 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,500 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,501 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,506 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:36:45,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:36:45,918 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:36:45,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45 WrapperNode [2022-11-20 10:36:45,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:36:45,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:36:45,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:36:45,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:36:45,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (1/1) ... [2022-11-20 10:36:46,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (1/1) ... [2022-11-20 10:36:46,119 INFO L138 Inliner]: procedures = 717, calls = 1904, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 833 [2022-11-20 10:36:46,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:36:46,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:36:46,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:36:46,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:36:46,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (1/1) ... [2022-11-20 10:36:46,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (1/1) ... [2022-11-20 10:36:46,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (1/1) ... [2022-11-20 10:36:46,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (1/1) ... [2022-11-20 10:36:46,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (1/1) ... [2022-11-20 10:36:46,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (1/1) ... [2022-11-20 10:36:46,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (1/1) ... [2022-11-20 10:36:46,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (1/1) ... [2022-11-20 10:36:46,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:36:46,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:36:46,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:36:46,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:36:46,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (1/1) ... [2022-11-20 10:36:46,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:36:46,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:46,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:36:46,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:36:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-20 10:36:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-20 10:36:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-20 10:36:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-20 10:36:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:36:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-20 10:36:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-20 10:36:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-20 10:36:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-20 10:36:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 10:36:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 10:36:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:36:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 10:36:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 10:36:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 10:36:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 10:36:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 10:36:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 10:36:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 10:36:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 10:36:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:36:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:36:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:36:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-20 10:36:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-20 10:36:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:36:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:36:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 10:36:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 10:36:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 10:36:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 10:36:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-11-20 10:36:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-11-20 10:36:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 10:36:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 10:36:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-20 10:36:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-20 10:36:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-20 10:36:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-20 10:36:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-20 10:36:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-20 10:36:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 10:36:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 10:36:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-20 10:36:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-20 10:36:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:36:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:36:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 10:36:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 10:36:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2022-11-20 10:36:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2022-11-20 10:36:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:36:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-20 10:36:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-20 10:36:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 10:36:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 10:36:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 10:36:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 10:36:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-20 10:36:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-20 10:36:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 10:36:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 10:36:46,829 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:36:46,831 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:36:49,705 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:36:49,722 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:36:49,723 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 10:36:49,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:49 BoogieIcfgContainer [2022-11-20 10:36:49,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:36:49,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:36:49,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:36:49,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:36:49,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:36:42" (1/3) ... [2022-11-20 10:36:49,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196430e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:36:49, skipping insertion in model container [2022-11-20 10:36:49,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:45" (2/3) ... [2022-11-20 10:36:49,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196430e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:36:49, skipping insertion in model container [2022-11-20 10:36:49,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:49" (3/3) ... [2022-11-20 10:36:49,737 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2022-11-20 10:36:49,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:36:49,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:36:49,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:36:49,844 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;@41dd788d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:36:49,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:36:49,852 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) [2022-11-20 10:36:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 10:36:49,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:49,884 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] [2022-11-20 10:36:49,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:49,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:49,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1926734945, now seen corresponding path program 1 times [2022-11-20 10:36:49,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:49,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232326198] [2022-11-20 10:36:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:49,917 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 [2022-11-20 10:36:49,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:49,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:36:49,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:36:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:50,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 10:36:50,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-20 10:36:51,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:51,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:51,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232326198] [2022-11-20 10:36:51,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232326198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:51,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:51,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:36:51,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607790699] [2022-11-20 10:36:51,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:51,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:36:51,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:51,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:36:51,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:36:51,125 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) [2022-11-20 10:36:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:51,197 INFO L93 Difference]: Finished difference Result 625 states and 944 transitions. [2022-11-20 10:36:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:36:51,200 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 [2022-11-20 10:36:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:51,211 INFO L225 Difference]: With dead ends: 625 [2022-11-20 10:36:51,212 INFO L226 Difference]: Without dead ends: 319 [2022-11-20 10:36:51,219 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 [2022-11-20 10:36:51,222 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 [2022-11-20 10:36:51,222 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] [2022-11-20 10:36:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-20 10:36:51,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-11-20 10:36:51,307 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) [2022-11-20 10:36:51,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 437 transitions. [2022-11-20 10:36:51,319 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 437 transitions. Word has length 156 [2022-11-20 10:36:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:51,321 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 437 transitions. [2022-11-20 10:36:51,322 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) [2022-11-20 10:36:51,322 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 437 transitions. [2022-11-20 10:36:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 10:36:51,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:51,336 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] [2022-11-20 10:36:51,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:36:51,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:36:51,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:51,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:51,560 INFO L85 PathProgramCache]: Analyzing trace with hash -860999513, now seen corresponding path program 1 times [2022-11-20 10:36:51,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:51,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787470525] [2022-11-20 10:36:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:51,563 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 [2022-11-20 10:36:51,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:51,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:36:51,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:36:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:52,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:36:52,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-20 10:36:52,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:52,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:52,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787470525] [2022-11-20 10:36:52,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787470525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:52,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:52,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:36:52,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849729549] [2022-11-20 10:36:52,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:52,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:52,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:52,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:52,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:52,830 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) [2022-11-20 10:36:53,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:53,228 INFO L93 Difference]: Finished difference Result 592 states and 816 transitions. [2022-11-20 10:36:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:36:53,229 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 [2022-11-20 10:36:53,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:53,234 INFO L225 Difference]: With dead ends: 592 [2022-11-20 10:36:53,234 INFO L226 Difference]: Without dead ends: 321 [2022-11-20 10:36:53,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:36:53,237 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:53,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1574 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:36:53,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-20 10:36:53,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-11-20 10:36:53,266 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) [2022-11-20 10:36:53,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 442 transitions. [2022-11-20 10:36:53,270 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 442 transitions. Word has length 156 [2022-11-20 10:36:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:53,271 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 442 transitions. [2022-11-20 10:36:53,271 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) [2022-11-20 10:36:53,271 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 442 transitions. [2022-11-20 10:36:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-20 10:36:53,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:53,275 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] [2022-11-20 10:36:53,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:53,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:36:53,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:53,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:53,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1740163981, now seen corresponding path program 1 times [2022-11-20 10:36:53,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:53,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488389332] [2022-11-20 10:36:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:53,504 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 [2022-11-20 10:36:53,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:53,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:36:53,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:36:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:54,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:36:54,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-20 10:36:54,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:54,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:54,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488389332] [2022-11-20 10:36:54,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488389332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:54,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:54,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:36:54,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058230359] [2022-11-20 10:36:54,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:54,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:36:54,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:54,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:36:54,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:54,626 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) [2022-11-20 10:36:55,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:55,576 INFO L93 Difference]: Finished difference Result 615 states and 863 transitions. [2022-11-20 10:36:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:36:55,577 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 [2022-11-20 10:36:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:55,580 INFO L225 Difference]: With dead ends: 615 [2022-11-20 10:36:55,580 INFO L226 Difference]: Without dead ends: 342 [2022-11-20 10:36:55,582 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 [2022-11-20 10:36:55,583 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:55,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 2276 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 10:36:55,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-20 10:36:55,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 340. [2022-11-20 10:36:55,611 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) [2022-11-20 10:36:55,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 479 transitions. [2022-11-20 10:36:55,616 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 479 transitions. Word has length 164 [2022-11-20 10:36:55,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:55,616 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 479 transitions. [2022-11-20 10:36:55,617 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) [2022-11-20 10:36:55,617 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 479 transitions. [2022-11-20 10:36:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:36:55,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:55,620 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] [2022-11-20 10:36:55,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:36:55,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:36:55,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:55,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:55,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2064550921, now seen corresponding path program 1 times [2022-11-20 10:36:55,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:55,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732258907] [2022-11-20 10:36:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:55,838 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 [2022-11-20 10:36:55,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:55,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:36:55,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:36:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:56,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1587 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:36:56,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-20 10:36:57,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:57,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:57,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732258907] [2022-11-20 10:36:57,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732258907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:57,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:57,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:36:57,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952605576] [2022-11-20 10:36:57,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:57,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:36:57,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:57,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:36:57,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:36:57,080 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) [2022-11-20 10:36:57,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:57,708 INFO L93 Difference]: Finished difference Result 640 states and 912 transitions. [2022-11-20 10:36:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:36:57,709 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 [2022-11-20 10:36:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:57,713 INFO L225 Difference]: With dead ends: 640 [2022-11-20 10:36:57,713 INFO L226 Difference]: Without dead ends: 348 [2022-11-20 10:36:57,715 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 [2022-11-20 10:36:57,716 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:57,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1931 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:36:57,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-20 10:36:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 340. [2022-11-20 10:36:57,737 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) [2022-11-20 10:36:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 479 transitions. [2022-11-20 10:36:57,741 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 479 transitions. Word has length 179 [2022-11-20 10:36:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:57,742 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 479 transitions. [2022-11-20 10:36:57,742 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) [2022-11-20 10:36:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 479 transitions. [2022-11-20 10:36:57,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-20 10:36:57,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:57,745 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] [2022-11-20 10:36:57,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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)] Ended with exit code 0 [2022-11-20 10:36:57,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:36:57,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:57,968 INFO L85 PathProgramCache]: Analyzing trace with hash 587208436, now seen corresponding path program 1 times [2022-11-20 10:36:57,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:57,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861328055] [2022-11-20 10:36:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:57,970 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 [2022-11-20 10:36:57,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:57,972 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:36:58,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:36:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:59,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:36:59,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:59,364 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-20 10:36:59,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:59,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:59,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861328055] [2022-11-20 10:36:59,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861328055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:59,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:59,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:36:59,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057576968] [2022-11-20 10:36:59,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:59,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:36:59,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:59,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:36:59,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:36:59,367 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) [2022-11-20 10:37:00,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:00,775 INFO L93 Difference]: Finished difference Result 662 states and 941 transitions. [2022-11-20 10:37:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:37:00,777 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 [2022-11-20 10:37:00,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:00,780 INFO L225 Difference]: With dead ends: 662 [2022-11-20 10:37:00,780 INFO L226 Difference]: Without dead ends: 370 [2022-11-20 10:37:00,782 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 [2022-11-20 10:37:00,784 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 142 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:00,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2641 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 10:37:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-20 10:37:00,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 352. [2022-11-20 10:37:00,803 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) [2022-11-20 10:37:00,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 495 transitions. [2022-11-20 10:37:00,807 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 495 transitions. Word has length 195 [2022-11-20 10:37:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:00,808 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 495 transitions. [2022-11-20 10:37:00,809 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) [2022-11-20 10:37:00,809 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 495 transitions. [2022-11-20 10:37:00,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-20 10:37:00,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:00,812 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] [2022-11-20 10:37:00,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:01,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:01,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:01,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:01,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1829094874, now seen corresponding path program 2 times [2022-11-20 10:37:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:01,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281783080] [2022-11-20 10:37:01,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:37:01,031 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 [2022-11-20 10:37:01,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:01,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:37:01,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:04,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:37:04,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:37:04,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:37:04,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-20 10:37:04,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:04,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:04,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281783080] [2022-11-20 10:37:04,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281783080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:04,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:04,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:37:04,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885625854] [2022-11-20 10:37:04,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:04,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:37:04,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:04,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:37:04,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:37:04,923 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) [2022-11-20 10:37:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:10,359 INFO L93 Difference]: Finished difference Result 692 states and 993 transitions. [2022-11-20 10:37:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:37:10,363 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 [2022-11-20 10:37:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:10,366 INFO L225 Difference]: With dead ends: 692 [2022-11-20 10:37:10,366 INFO L226 Difference]: Without dead ends: 388 [2022-11-20 10:37:10,369 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 [2022-11-20 10:37:10,369 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 23 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s 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, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:10,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2016 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 10:37:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-20 10:37:10,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 360. [2022-11-20 10:37:10,390 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) [2022-11-20 10:37:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 505 transitions. [2022-11-20 10:37:10,393 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 505 transitions. Word has length 210 [2022-11-20 10:37:10,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:10,393 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 505 transitions. [2022-11-20 10:37:10,394 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) [2022-11-20 10:37:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 505 transitions. [2022-11-20 10:37:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-20 10:37:10,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:10,398 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] [2022-11-20 10:37:10,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:10,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:10,619 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash -731767972, now seen corresponding path program 1 times [2022-11-20 10:37:10,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:10,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292882309] [2022-11-20 10:37:10,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:10,623 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 [2022-11-20 10:37:10,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:10,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:37:10,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:11,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:37:11,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-20 10:37:12,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:12,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:12,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292882309] [2022-11-20 10:37:12,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292882309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:12,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:12,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:37:12,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463498722] [2022-11-20 10:37:12,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:12,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:37:12,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:12,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:37:12,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:12,656 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) [2022-11-20 10:37:16,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:16,478 INFO L93 Difference]: Finished difference Result 702 states and 1003 transitions. [2022-11-20 10:37:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:37:16,481 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 [2022-11-20 10:37:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:16,484 INFO L225 Difference]: With dead ends: 702 [2022-11-20 10:37:16,484 INFO L226 Difference]: Without dead ends: 390 [2022-11-20 10:37:16,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:37:16,487 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 20 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:16,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2438 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 10:37:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-20 10:37:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 364. [2022-11-20 10:37:16,506 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) [2022-11-20 10:37:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 509 transitions. [2022-11-20 10:37:16,509 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 509 transitions. Word has length 210 [2022-11-20 10:37:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:16,510 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 509 transitions. [2022-11-20 10:37:16,510 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) [2022-11-20 10:37:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 509 transitions. [2022-11-20 10:37:16,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-20 10:37:16,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:16,514 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] [2022-11-20 10:37:16,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:16,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:16,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:16,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:16,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1652156766, now seen corresponding path program 1 times [2022-11-20 10:37:16,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:16,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902029212] [2022-11-20 10:37:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:16,726 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 [2022-11-20 10:37:16,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:16,727 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:37:16,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:18,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:37:18,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:21,054 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 [2022-11-20 10:37:23,332 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 [2022-11-20 10:37:25,574 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 [2022-11-20 10:37:25,823 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 [2022-11-20 10:37:25,829 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 [2022-11-20 10:37:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 4 not checked. [2022-11-20 10:37:25,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:29,149 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:37:29,150 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 [2022-11-20 10:37:29,198 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-20 10:37:29,198 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 [2022-11-20 10:37:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2022-11-20 10:37:29,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:29,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902029212] [2022-11-20 10:37:29,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902029212] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:29,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:29,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 15 [2022-11-20 10:37:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902948666] [2022-11-20 10:37:29,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:29,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:37:29,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:37:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=109, Unknown=3, NotChecked=66, Total=210 [2022-11-20 10:37:29,429 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) [2022-11-20 10:37:34,152 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 [] [2022-11-20 10:37:36,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:37:38,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:37:43,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:43,432 INFO L93 Difference]: Finished difference Result 729 states and 1040 transitions. [2022-11-20 10:37:43,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:37:43,434 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 [2022-11-20 10:37:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:43,438 INFO L225 Difference]: With dead ends: 729 [2022-11-20 10:37:43,438 INFO L226 Difference]: Without dead ends: 444 [2022-11-20 10:37:43,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 406 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=115, Invalid=356, Unknown=3, NotChecked=126, Total=600 [2022-11-20 10:37:43,441 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 110 mSDsluCounter, 3417 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s 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, 12.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:43,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 3848 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 657 Invalid, 3 Unknown, 1561 Unchecked, 12.8s Time] [2022-11-20 10:37:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-20 10:37:43,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 386. [2022-11-20 10:37:43,475 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) [2022-11-20 10:37:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 536 transitions. [2022-11-20 10:37:43,479 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 536 transitions. Word has length 210 [2022-11-20 10:37:43,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:43,484 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 536 transitions. [2022-11-20 10:37:43,484 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) [2022-11-20 10:37:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 536 transitions. [2022-11-20 10:37:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-20 10:37:43,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:43,488 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] [2022-11-20 10:37:43,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:43,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:43,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:43,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:43,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1292849073, now seen corresponding path program 1 times [2022-11-20 10:37:43,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:43,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820604874] [2022-11-20 10:37:43,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:43,705 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 [2022-11-20 10:37:43,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:43,706 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:37:43,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:45,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:37:45,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-20 10:37:45,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:45,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:45,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820604874] [2022-11-20 10:37:45,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820604874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:45,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:45,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:37:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788365093] [2022-11-20 10:37:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:45,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:37:45,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:37:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:45,575 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) [2022-11-20 10:37:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:46,296 INFO L93 Difference]: Finished difference Result 674 states and 950 transitions. [2022-11-20 10:37:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:37:46,297 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 [2022-11-20 10:37:46,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:46,299 INFO L225 Difference]: With dead ends: 674 [2022-11-20 10:37:46,300 INFO L226 Difference]: Without dead ends: 388 [2022-11-20 10:37:46,301 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 [2022-11-20 10:37:46,302 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:46,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2284 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:37:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-20 10:37:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2022-11-20 10:37:46,326 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) [2022-11-20 10:37:46,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 539 transitions. [2022-11-20 10:37:46,329 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 539 transitions. Word has length 212 [2022-11-20 10:37:46,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:46,330 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 539 transitions. [2022-11-20 10:37:46,330 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) [2022-11-20 10:37:46,330 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 539 transitions. [2022-11-20 10:37:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-20 10:37:46,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:46,334 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] [2022-11-20 10:37:46,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:46,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:46,555 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:46,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:46,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1705802895, now seen corresponding path program 1 times [2022-11-20 10:37:46,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:46,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165249380] [2022-11-20 10:37:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:46,557 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 [2022-11-20 10:37:46,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:46,564 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:37:46,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:48,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:37:48,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-20 10:37:48,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:48,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:48,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165249380] [2022-11-20 10:37:48,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165249380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:48,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:48,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:37:48,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777323264] [2022-11-20 10:37:48,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:48,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:37:48,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:48,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:37:48,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:37:48,699 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) [2022-11-20 10:37:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:49,916 INFO L93 Difference]: Finished difference Result 679 states and 957 transitions. [2022-11-20 10:37:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:37:49,918 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 [2022-11-20 10:37:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:49,921 INFO L225 Difference]: With dead ends: 679 [2022-11-20 10:37:49,921 INFO L226 Difference]: Without dead ends: 391 [2022-11-20 10:37:49,923 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 [2022-11-20 10:37:49,924 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, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:49,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2615 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:37:49,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-20 10:37:49,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 389. [2022-11-20 10:37:49,951 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) [2022-11-20 10:37:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 540 transitions. [2022-11-20 10:37:49,954 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 540 transitions. Word has length 235 [2022-11-20 10:37:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:49,955 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 540 transitions. [2022-11-20 10:37:49,955 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) [2022-11-20 10:37:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 540 transitions. [2022-11-20 10:37:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-20 10:37:49,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:49,958 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] [2022-11-20 10:37:50,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:50,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:50,179 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:50,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1402500186, now seen corresponding path program 1 times [2022-11-20 10:37:50,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:50,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228224910] [2022-11-20 10:37:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:50,182 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 [2022-11-20 10:37:50,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:50,184 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:37:50,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:51,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:37:51,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-20 10:37:52,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-11-20 10:37:52,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:52,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228224910] [2022-11-20 10:37:52,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228224910] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:52,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:52,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2022-11-20 10:37:52,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497165352] [2022-11-20 10:37:52,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:52,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:37:52,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:52,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:37:52,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:37:52,900 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) [2022-11-20 10:37:54,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:54,262 INFO L93 Difference]: Finished difference Result 703 states and 989 transitions. [2022-11-20 10:37:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:37:54,263 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 [2022-11-20 10:37:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:54,267 INFO L225 Difference]: With dead ends: 703 [2022-11-20 10:37:54,267 INFO L226 Difference]: Without dead ends: 414 [2022-11-20 10:37:54,269 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 [2022-11-20 10:37:54,270 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, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:54,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 2572 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 10:37:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-20 10:37:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 408. [2022-11-20 10:37:54,300 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) [2022-11-20 10:37:54,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 566 transitions. [2022-11-20 10:37:54,304 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 566 transitions. Word has length 236 [2022-11-20 10:37:54,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:54,304 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 566 transitions. [2022-11-20 10:37:54,305 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) [2022-11-20 10:37:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 566 transitions. [2022-11-20 10:37:54,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-20 10:37:54,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:54,307 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] [2022-11-20 10:37:54,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:54,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:54,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash -192715456, now seen corresponding path program 2 times [2022-11-20 10:37:54,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:54,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483816644] [2022-11-20 10:37:54,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:37:54,526 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 [2022-11-20 10:37:54,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:54,528 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:37:54,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:37:58,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:37:58,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:37:58,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:37:58,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-20 10:37:59,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:59,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:59,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483816644] [2022-11-20 10:37:59,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483816644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:59,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:59,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:37:59,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050212594] [2022-11-20 10:37:59,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:59,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:37:59,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:59,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:37:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:37:59,352 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) [2022-11-20 10:38:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:01,520 INFO L93 Difference]: Finished difference Result 718 states and 1008 transitions. [2022-11-20 10:38:01,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:38:01,521 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 [2022-11-20 10:38:01,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:01,525 INFO L225 Difference]: With dead ends: 718 [2022-11-20 10:38:01,525 INFO L226 Difference]: Without dead ends: 410 [2022-11-20 10:38:01,527 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 [2022-11-20 10:38:01,528 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 177 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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 [2022-11-20 10:38:01,529 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] [2022-11-20 10:38:01,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-20 10:38:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 386. [2022-11-20 10:38:01,551 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) [2022-11-20 10:38:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 534 transitions. [2022-11-20 10:38:01,554 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 534 transitions. Word has length 251 [2022-11-20 10:38:01,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:01,556 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 534 transitions. [2022-11-20 10:38:01,556 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) [2022-11-20 10:38:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 534 transitions. [2022-11-20 10:38:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-20 10:38:01,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:01,559 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] [2022-11-20 10:38:01,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:01,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:01,775 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:01,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:01,776 INFO L85 PathProgramCache]: Analyzing trace with hash -556391816, now seen corresponding path program 3 times [2022-11-20 10:38:01,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:01,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943056602] [2022-11-20 10:38:01,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:38:01,779 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 [2022-11-20 10:38:01,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:01,780 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:38:01,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:04,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 10:38:04,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:38:04,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:38:04,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-11-20 10:38:04,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:04,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:04,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943056602] [2022-11-20 10:38:04,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943056602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:04,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:04,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:38:04,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440621846] [2022-11-20 10:38:04,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:04,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:38:04,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:04,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:38:04,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:38:04,888 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) [2022-11-20 10:38:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:05,446 INFO L93 Difference]: Finished difference Result 668 states and 944 transitions. [2022-11-20 10:38:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:38:05,447 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 [2022-11-20 10:38:05,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:05,450 INFO L225 Difference]: With dead ends: 668 [2022-11-20 10:38:05,450 INFO L226 Difference]: Without dead ends: 386 [2022-11-20 10:38:05,452 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 [2022-11-20 10:38:05,453 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:05,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1986 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:38:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-20 10:38:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-11-20 10:38:05,477 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) [2022-11-20 10:38:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 533 transitions. [2022-11-20 10:38:05,480 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 533 transitions. Word has length 266 [2022-11-20 10:38:05,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:05,481 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 533 transitions. [2022-11-20 10:38:05,481 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) [2022-11-20 10:38:05,481 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 533 transitions. [2022-11-20 10:38:05,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-20 10:38:05,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:05,484 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] [2022-11-20 10:38:05,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:05,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:05,699 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:05,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:05,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1648927450, now seen corresponding path program 4 times [2022-11-20 10:38:05,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:05,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959004487] [2022-11-20 10:38:05,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:38:05,703 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 [2022-11-20 10:38:05,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:05,705 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:38:05,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:08,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:38:08,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:38:08,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:38:08,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2022-11-20 10:38:08,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:08,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:08,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959004487] [2022-11-20 10:38:08,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959004487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:08,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:08,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:38:08,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71685835] [2022-11-20 10:38:08,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:08,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:38:08,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:38:08,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:38:08,941 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) [2022-11-20 10:38:10,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:10,289 INFO L93 Difference]: Finished difference Result 679 states and 951 transitions. [2022-11-20 10:38:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:38:10,290 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 [2022-11-20 10:38:10,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:10,293 INFO L225 Difference]: With dead ends: 679 [2022-11-20 10:38:10,294 INFO L226 Difference]: Without dead ends: 398 [2022-11-20 10:38:10,296 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 [2022-11-20 10:38:10,296 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 79 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:10,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 3003 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 10:38:10,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-20 10:38:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2022-11-20 10:38:10,320 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) [2022-11-20 10:38:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 550 transitions. [2022-11-20 10:38:10,330 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 550 transitions. Word has length 281 [2022-11-20 10:38:10,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:10,331 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 550 transitions. [2022-11-20 10:38:10,331 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) [2022-11-20 10:38:10,331 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 550 transitions. [2022-11-20 10:38:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-20 10:38:10,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:10,334 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] [2022-11-20 10:38:10,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:10,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:10,547 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:10,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash 414007608, now seen corresponding path program 1 times [2022-11-20 10:38:10,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:10,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862639152] [2022-11-20 10:38:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:10,550 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 [2022-11-20 10:38:10,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:10,551 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:38:10,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:17,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 2265 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:38:17,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:17,677 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:38:17,677 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 [2022-11-20 10:38:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-20 10:38:18,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:18,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:18,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862639152] [2022-11-20 10:38:18,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862639152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:18,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:18,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:38:18,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868371265] [2022-11-20 10:38:18,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:18,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:38:18,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:38:18,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:38:18,207 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) [2022-11-20 10:38:25,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:25,708 INFO L93 Difference]: Finished difference Result 702 states and 984 transitions. [2022-11-20 10:38:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:38:25,711 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 [2022-11-20 10:38:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:25,713 INFO L225 Difference]: With dead ends: 702 [2022-11-20 10:38:25,713 INFO L226 Difference]: Without dead ends: 401 [2022-11-20 10:38:25,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:38:25,715 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 5 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:25,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2640 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 379 Invalid, 0 Unknown, 36 Unchecked, 7.1s Time] [2022-11-20 10:38:25,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-20 10:38:25,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 400. [2022-11-20 10:38:25,739 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) [2022-11-20 10:38:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 552 transitions. [2022-11-20 10:38:25,742 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 552 transitions. Word has length 296 [2022-11-20 10:38:25,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:25,742 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 552 transitions. [2022-11-20 10:38:25,743 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) [2022-11-20 10:38:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 552 transitions. [2022-11-20 10:38:25,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-20 10:38:25,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:25,745 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] [2022-11-20 10:38:25,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:25,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:25,959 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:25,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash -643816991, now seen corresponding path program 1 times [2022-11-20 10:38:25,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:25,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47584222] [2022-11-20 10:38:25,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:25,962 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 [2022-11-20 10:38:25,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:25,963 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:38:25,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:28,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:38:28,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-20 10:38:28,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:28,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:28,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47584222] [2022-11-20 10:38:28,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47584222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:28,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:28,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:38:28,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291111337] [2022-11-20 10:38:28,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:28,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:38:28,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:28,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:38:28,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:38:28,254 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) [2022-11-20 10:38:28,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:28,374 INFO L93 Difference]: Finished difference Result 742 states and 1051 transitions. [2022-11-20 10:38:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:38:28,375 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 [2022-11-20 10:38:28,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:28,378 INFO L225 Difference]: With dead ends: 742 [2022-11-20 10:38:28,378 INFO L226 Difference]: Without dead ends: 405 [2022-11-20 10:38:28,380 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 [2022-11-20 10:38:28,381 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 [2022-11-20 10:38:28,381 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] [2022-11-20 10:38:28,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-11-20 10:38:28,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 401. [2022-11-20 10:38:28,404 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) [2022-11-20 10:38:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 553 transitions. [2022-11-20 10:38:28,406 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 553 transitions. Word has length 301 [2022-11-20 10:38:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:28,407 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 553 transitions. [2022-11-20 10:38:28,407 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) [2022-11-20 10:38:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 553 transitions. [2022-11-20 10:38:28,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-20 10:38:28,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:28,410 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] [2022-11-20 10:38:28,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:28,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:28,623 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:28,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1264414986, now seen corresponding path program 1 times [2022-11-20 10:38:28,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:28,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435794662] [2022-11-20 10:38:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:28,626 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 [2022-11-20 10:38:28,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:28,627 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:38:28,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:30,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:38:30,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-20 10:38:31,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:31,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:31,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435794662] [2022-11-20 10:38:31,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435794662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:31,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:31,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:38:31,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942420117] [2022-11-20 10:38:31,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:31,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:38:31,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:31,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:38:31,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:38:31,029 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) [2022-11-20 10:38:31,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:31,811 INFO L93 Difference]: Finished difference Result 750 states and 1046 transitions. [2022-11-20 10:38:31,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:38:31,812 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 [2022-11-20 10:38:31,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:31,815 INFO L225 Difference]: With dead ends: 750 [2022-11-20 10:38:31,815 INFO L226 Difference]: Without dead ends: 415 [2022-11-20 10:38:31,817 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 [2022-11-20 10:38:31,818 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 5 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:31,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3660 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:38:31,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-11-20 10:38:31,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 408. [2022-11-20 10:38:31,843 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) [2022-11-20 10:38:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 567 transitions. [2022-11-20 10:38:31,846 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 567 transitions. Word has length 301 [2022-11-20 10:38:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:31,847 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 567 transitions. [2022-11-20 10:38:31,847 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) [2022-11-20 10:38:31,847 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 567 transitions. [2022-11-20 10:38:31,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-20 10:38:31,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:31,850 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] [2022-11-20 10:38:31,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:32,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:32,075 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:32,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:32,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2070873983, now seen corresponding path program 1 times [2022-11-20 10:38:32,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:32,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146704088] [2022-11-20 10:38:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:32,079 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 [2022-11-20 10:38:32,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:32,081 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:38:32,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:34,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:38:34,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 258 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-20 10:38:34,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2022-11-20 10:38:35,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:35,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146704088] [2022-11-20 10:38:35,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146704088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:38:35,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:38:35,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 10:38:35,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741419545] [2022-11-20 10:38:35,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:38:35,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:38:35,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:35,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:38:35,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:38:35,035 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) [2022-11-20 10:38:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:35,548 INFO L93 Difference]: Finished difference Result 771 states and 1107 transitions. [2022-11-20 10:38:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:38:35,549 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 [2022-11-20 10:38:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:35,552 INFO L225 Difference]: With dead ends: 771 [2022-11-20 10:38:35,552 INFO L226 Difference]: Without dead ends: 423 [2022-11-20 10:38:35,554 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 [2022-11-20 10:38:35,555 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 30 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:35,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2155 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:38:35,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-20 10:38:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 417. [2022-11-20 10:38:35,584 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) [2022-11-20 10:38:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 579 transitions. [2022-11-20 10:38:35,587 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 579 transitions. Word has length 304 [2022-11-20 10:38:35,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:35,588 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 579 transitions. [2022-11-20 10:38:35,588 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) [2022-11-20 10:38:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 579 transitions. [2022-11-20 10:38:35,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-20 10:38:35,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:35,591 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] [2022-11-20 10:38:35,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:35,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:35,815 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:35,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2014722693, now seen corresponding path program 1 times [2022-11-20 10:38:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:35,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329463460] [2022-11-20 10:38:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:35,820 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 [2022-11-20 10:38:35,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:35,821 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:38:35,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:41,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 10:38:41,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:42,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:38:42,761 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 [2022-11-20 10:38:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-20 10:38:42,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:42,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:42,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329463460] [2022-11-20 10:38:42,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329463460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:42,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:42,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:38:42,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514715445] [2022-11-20 10:38:42,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:42,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:38:42,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:42,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:38:42,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:38:42,919 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) [2022-11-20 10:38:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:52,363 INFO L93 Difference]: Finished difference Result 853 states and 1227 transitions. [2022-11-20 10:38:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:38:52,366 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 [2022-11-20 10:38:52,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:52,371 INFO L225 Difference]: With dead ends: 853 [2022-11-20 10:38:52,371 INFO L226 Difference]: Without dead ends: 484 [2022-11-20 10:38:52,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:38:52,374 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 117 mSDsluCounter, 3690 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s 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, 8.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:52,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 4099 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-20 10:38:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-20 10:38:52,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 435. [2022-11-20 10:38:52,408 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) [2022-11-20 10:38:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 612 transitions. [2022-11-20 10:38:52,411 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 612 transitions. Word has length 310 [2022-11-20 10:38:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:52,412 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 612 transitions. [2022-11-20 10:38:52,412 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) [2022-11-20 10:38:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 612 transitions. [2022-11-20 10:38:52,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-20 10:38:52,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:52,415 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] [2022-11-20 10:38:52,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:52,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:52,631 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:52,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:52,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1391876475, now seen corresponding path program 1 times [2022-11-20 10:38:52,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:52,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611987819] [2022-11-20 10:38:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:52,635 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 [2022-11-20 10:38:52,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:52,637 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:38:52,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2298 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:38:54,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-20 10:38:54,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:54,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:54,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611987819] [2022-11-20 10:38:54,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611987819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:54,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:54,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:38:54,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249757330] [2022-11-20 10:38:54,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:54,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:54,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:54,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:54,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:38:54,779 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) [2022-11-20 10:38:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:54,910 INFO L93 Difference]: Finished difference Result 837 states and 1196 transitions. [2022-11-20 10:38:54,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:38:54,911 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 [2022-11-20 10:38:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:54,914 INFO L225 Difference]: With dead ends: 837 [2022-11-20 10:38:54,915 INFO L226 Difference]: Without dead ends: 460 [2022-11-20 10:38:54,916 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 [2022-11-20 10:38:54,917 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 8 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:54,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1780 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:38:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-20 10:38:54,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 443. [2022-11-20 10:38:54,944 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) [2022-11-20 10:38:54,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 620 transitions. [2022-11-20 10:38:54,947 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 620 transitions. Word has length 310 [2022-11-20 10:38:54,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:54,948 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 620 transitions. [2022-11-20 10:38:54,948 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) [2022-11-20 10:38:54,948 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 620 transitions. [2022-11-20 10:38:54,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-20 10:38:54,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:54,951 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] [2022-11-20 10:38:54,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-11-20 10:38:55,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:55,175 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash 91694395, now seen corresponding path program 1 times [2022-11-20 10:38:55,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:55,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549706606] [2022-11-20 10:38:55,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:55,178 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 [2022-11-20 10:38:55,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:55,179 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:38:55,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:57,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 2293 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:38:57,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-11-20 10:38:57,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:57,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:57,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549706606] [2022-11-20 10:38:57,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549706606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:57,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:57,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:38:57,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587631074] [2022-11-20 10:38:57,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:57,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:38:57,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:57,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:38:57,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:38:57,464 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) [2022-11-20 10:38:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:57,596 INFO L93 Difference]: Finished difference Result 838 states and 1215 transitions. [2022-11-20 10:38:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:38:57,598 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 [2022-11-20 10:38:57,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:57,602 INFO L225 Difference]: With dead ends: 838 [2022-11-20 10:38:57,603 INFO L226 Difference]: Without dead ends: 443 [2022-11-20 10:38:57,605 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 [2022-11-20 10:38:57,606 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 [2022-11-20 10:38:57,606 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] [2022-11-20 10:38:57,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-20 10:38:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2022-11-20 10:38:57,645 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) [2022-11-20 10:38:57,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 618 transitions. [2022-11-20 10:38:57,664 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 618 transitions. Word has length 310 [2022-11-20 10:38:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:57,665 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 618 transitions. [2022-11-20 10:38:57,665 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) [2022-11-20 10:38:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 618 transitions. [2022-11-20 10:38:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-20 10:38:57,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:57,668 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] [2022-11-20 10:38:57,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:57,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:38:57,884 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:57,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:57,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1408820805, now seen corresponding path program 1 times [2022-11-20 10:38:57,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:57,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030752625] [2022-11-20 10:38:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:57,888 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 [2022-11-20 10:38:57,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:57,890 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:38:57,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:39:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:03,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 2307 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 10:39:03,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-11-20 10:39:04,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:39:04,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:04,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030752625] [2022-11-20 10:39:04,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030752625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:04,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:04,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 10:39:04,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669302794] [2022-11-20 10:39:04,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:04,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:39:04,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:39:04,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:39:04,414 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) [2022-11-20 10:39:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:09,996 INFO L93 Difference]: Finished difference Result 777 states and 1097 transitions. [2022-11-20 10:39:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:39:10,000 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 [2022-11-20 10:39:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:10,003 INFO L225 Difference]: With dead ends: 777 [2022-11-20 10:39:10,004 INFO L226 Difference]: Without dead ends: 443 [2022-11-20 10:39:10,005 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 [2022-11-20 10:39:10,006 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 98 mSDsluCounter, 3422 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 3806 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:10,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 3806 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 10:39:10,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-20 10:39:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2022-11-20 10:39:10,035 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) [2022-11-20 10:39:10,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 617 transitions. [2022-11-20 10:39:10,037 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 617 transitions. Word has length 314 [2022-11-20 10:39:10,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:10,038 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 617 transitions. [2022-11-20 10:39:10,038 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) [2022-11-20 10:39:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 617 transitions. [2022-11-20 10:39:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-20 10:39:10,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:10,041 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] [2022-11-20 10:39:10,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:39:10,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:39:10,264 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:10,264 INFO L85 PathProgramCache]: Analyzing trace with hash -147903555, now seen corresponding path program 1 times [2022-11-20 10:39:10,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:10,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982871885] [2022-11-20 10:39:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:10,267 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 [2022-11-20 10:39:10,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:10,268 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:39:10,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:41:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:08,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 2310 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-20 10:41:08,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:41:08,320 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 [2022-11-20 10:41:09,259 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 [2022-11-20 10:41:11,519 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 [2022-11-20 10:41:11,683 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 [2022-11-20 10:41:13,916 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 [2022-11-20 10:41:13,988 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 [2022-11-20 10:41:15,169 INFO L321 Elim1Store]: treesize reduction 232, result has 25.9 percent of original size [2022-11-20 10:41:15,170 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 [2022-11-20 10:41:20,213 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 [2022-11-20 10:41:26,869 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 [2022-11-20 10:41:26,914 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 [2022-11-20 10:41:27,131 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 10:41:27,132 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 [2022-11-20 10:41:27,218 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 10:41:27,218 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 [2022-11-20 10:41:27,246 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 [2022-11-20 10:41:27,290 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 [2022-11-20 10:41:34,136 INFO L321 Elim1Store]: treesize reduction 38, result has 74.8 percent of original size [2022-11-20 10:41:34,137 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 [2022-11-20 10:41:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 243 proven. 63 refuted. 8 times theorem prover too weak. 141 trivial. 76 not checked. [2022-11-20 10:41:37,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:41:39,956 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 [2022-11-20 10:41:39,967 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 [2022-11-20 10:41:39,983 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 [2022-11-20 10:41:39,993 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 [2022-11-20 10:41:40,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:41:40,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982871885] [2022-11-20 10:41:40,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982871885] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:41:40,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1302441215] [2022-11-20 10:41:40,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:40,626 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 10:41:40,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 10:41:40,631 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 10:41:40,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bb3df6-6a73-4e88-a051-877f0aaef0e0/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process