./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 8393723b 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_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/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_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 18:42:02,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:42:02,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:42:02,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:42:02,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:42:02,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:42:02,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:42:02,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:42:02,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:42:02,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:42:02,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:42:02,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:42:02,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:42:02,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:42:02,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:42:02,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:42:02,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:42:02,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:42:02,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:42:02,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:42:02,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:42:02,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:42:02,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:42:02,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:42:02,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:42:02,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:42:02,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:42:02,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:42:02,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:42:02,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:42:02,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:42:02,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:42:02,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:42:02,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:42:02,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:42:02,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:42:02,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:42:02,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:42:02,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:42:02,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:42:02,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:42:02,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 18:42:02,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:42:02,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:42:02,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:42:02,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:42:02,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:42:02,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:42:02,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:42:02,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:42:02,395 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:42:02,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:42:02,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:42:02,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:42:02,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:42:02,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:42:02,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:42:02,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:42:02,397 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:42:02,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:42:02,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:42:02,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:42:02,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:42:02,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:02,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:42:02,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:42:02,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:42:02,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:42:02,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:42:02,399 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:42:02,400 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:42:02,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:42:02,400 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_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2022-11-18 18:42:02,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:42:02,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:42:02,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:42:02,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:42:02,733 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:42:02,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-18 18:42:02,814 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/data/437b9595d/bb53fea3186e4548839cf671d4cd719e/FLAGe7014ce90 [2022-11-18 18:42:03,617 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:42:03,618 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-18 18:42:03,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/data/437b9595d/bb53fea3186e4548839cf671d4cd719e/FLAGe7014ce90 [2022-11-18 18:42:03,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/data/437b9595d/bb53fea3186e4548839cf671d4cd719e [2022-11-18 18:42:03,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:42:03,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:42:03,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:03,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:42:03,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:42:03,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:03" (1/1) ... [2022-11-18 18:42:03,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ffcc82a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:03, skipping insertion in model container [2022-11-18 18:42:03,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:03" (1/1) ... [2022-11-18 18:42:03,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:42:03,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:42:04,192 WARN L234 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_798a2e24-7d13-40e1-a437-67d2e4c06f4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-18 18:42:04,202 WARN L234 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_798a2e24-7d13-40e1-a437-67d2e4c06f4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-18 18:42:05,139 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,140 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,141 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,142 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,143 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,155 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,156 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,158 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,159 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,161 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,161 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,162 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,163 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,502 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 18:42:05,503 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 18:42:05,504 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 18:42:05,505 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 18:42:05,507 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 18:42:05,508 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 18:42:05,509 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 18:42:05,509 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 18:42:05,510 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 18:42:05,511 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 18:42:05,672 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 18:42:05,693 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,694 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,699 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,706 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,773 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,773 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,774 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,774 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,775 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,775 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,776 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,777 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,777 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,777 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,778 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,778 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,778 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,781 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,782 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,782 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,783 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,807 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,808 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,814 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,827 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,827 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:05,903 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:42:05,919 WARN L234 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_798a2e24-7d13-40e1-a437-67d2e4c06f4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-18 18:42:05,924 WARN L234 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_798a2e24-7d13-40e1-a437-67d2e4c06f4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-18 18:42:05,991 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,998 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,998 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:05,999 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,000 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,014 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,016 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,017 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,018 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,020 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,020 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,021 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,021 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,077 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 18:42:06,078 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 18:42:06,079 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 18:42:06,080 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 18:42:06,081 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 18:42:06,082 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 18:42:06,085 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 18:42:06,085 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 18:42:06,086 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 18:42:06,086 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 18:42:06,131 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 18:42:06,154 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,155 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,156 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,163 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,198 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,203 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,204 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,204 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,205 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,205 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,206 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,206 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,207 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,207 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,208 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,208 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,209 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,209 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,210 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,211 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,212 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,215 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,215 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,223 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,224 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,224 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:42:06,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:06,483 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:42:06,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06 WrapperNode [2022-11-18 18:42:06,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:06,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:06,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:42:06,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:42:06,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (1/1) ... [2022-11-18 18:42:06,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (1/1) ... [2022-11-18 18:42:06,667 INFO L138 Inliner]: procedures = 697, calls = 1904, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 839 [2022-11-18 18:42:06,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:06,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:42:06,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:42:06,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:42:06,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (1/1) ... [2022-11-18 18:42:06,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (1/1) ... [2022-11-18 18:42:06,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (1/1) ... [2022-11-18 18:42:06,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (1/1) ... [2022-11-18 18:42:06,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (1/1) ... [2022-11-18 18:42:06,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (1/1) ... [2022-11-18 18:42:06,803 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (1/1) ... [2022-11-18 18:42:06,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (1/1) ... [2022-11-18 18:42:06,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:42:06,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:42:06,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:42:06,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:42:06,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (1/1) ... [2022-11-18 18:42:06,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:06,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:06,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:42:06,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:42:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-18 18:42:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-18 18:42:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-18 18:42:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-18 18:42:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:42:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-18 18:42:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-18 18:42:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-18 18:42:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-18 18:42:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-18 18:42:06,896 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-18 18:42:06,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:42:06,896 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-18 18:42:06,896 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-18 18:42:06,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 18:42:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 18:42:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:42:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:42:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:42:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-18 18:42:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-18 18:42:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:42:06,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:42:06,903 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-18 18:42:06,903 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-18 18:42:06,903 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-11-18 18:42:06,908 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-11-18 18:42:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-18 18:42:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-18 18:42:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-18 18:42:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-18 18:42:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-18 18:42:06,910 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-18 18:42:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-18 18:42:06,910 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-18 18:42:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 18:42:06,910 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 18:42:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-18 18:42:06,910 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-18 18:42:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:42:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:42:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2022-11-18 18:42:06,911 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2022-11-18 18:42:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 18:42:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-18 18:42:06,911 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-18 18:42:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-18 18:42:06,912 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-18 18:42:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-18 18:42:06,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-18 18:42:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:42:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-18 18:42:06,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-18 18:42:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-18 18:42:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-18 18:42:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 18:42:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 18:42:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:42:07,316 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:42:07,319 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:42:08,612 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:42:08,621 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:42:08,621 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 18:42:08,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:42:08 BoogieIcfgContainer [2022-11-18 18:42:08,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:42:08,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:42:08,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:42:08,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:42:08,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:42:03" (1/3) ... [2022-11-18 18:42:08,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4357073a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:42:08, skipping insertion in model container [2022-11-18 18:42:08,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:06" (2/3) ... [2022-11-18 18:42:08,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4357073a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:42:08, skipping insertion in model container [2022-11-18 18:42:08,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:42:08" (3/3) ... [2022-11-18 18:42:08,632 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2022-11-18 18:42:08,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:42:08,650 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:42:08,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:42:08,710 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;@127147a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:42:08,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:42:08,715 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) [2022-11-18 18:42:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-18 18:42:08,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:08,731 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] [2022-11-18 18:42:08,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:08,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:08,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1627804587, now seen corresponding path program 1 times [2022-11-18 18:42:08,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:08,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707256954] [2022-11-18 18:42:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:08,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:42:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:42:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:42:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 18:42:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:42:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 18:42:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:42:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 18:42:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 18:42:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 18:42:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:42:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:42:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 18:42:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:42:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:42:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 18:42:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 18:42:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 18:42:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 18:42:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 18:42:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 18:42:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 18:42:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 18:42:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-18 18:42:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-18 18:42:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 18:42:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-18 18:42:09,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:09,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707256954] [2022-11-18 18:42:09,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707256954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:09,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:09,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:42:09,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515276349] [2022-11-18 18:42:09,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:09,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:09,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:09,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:09,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:09,966 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) [2022-11-18 18:42:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:11,572 INFO L93 Difference]: Finished difference Result 731 states and 1164 transitions. [2022-11-18 18:42:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:42:11,574 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 [2022-11-18 18:42:11,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:11,588 INFO L225 Difference]: With dead ends: 731 [2022-11-18 18:42:11,603 INFO L226 Difference]: Without dead ends: 423 [2022-11-18 18:42:11,612 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 [2022-11-18 18:42:11,629 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 130 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:11,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 571 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 18:42:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-18 18:42:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 321. [2022-11-18 18:42:11,756 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) [2022-11-18 18:42:11,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 439 transitions. [2022-11-18 18:42:11,761 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 439 transitions. Word has length 156 [2022-11-18 18:42:11,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:11,761 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 439 transitions. [2022-11-18 18:42:11,762 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) [2022-11-18 18:42:11,762 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 439 transitions. [2022-11-18 18:42:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-18 18:42:11,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:11,779 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] [2022-11-18 18:42:11,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:42:11,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:11,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1159929871, now seen corresponding path program 1 times [2022-11-18 18:42:11,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:11,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824521074] [2022-11-18 18:42:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:11,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:42:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:42:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:42:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 18:42:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:42:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 18:42:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:42:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 18:42:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 18:42:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 18:42:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:42:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:42:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 18:42:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:42:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:42:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 18:42:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 18:42:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 18:42:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 18:42:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 18:42:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 18:42:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 18:42:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 18:42:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-18 18:42:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-18 18:42:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 18:42:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-18 18:42:12,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:12,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824521074] [2022-11-18 18:42:12,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824521074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:12,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777140364] [2022-11-18 18:42:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:12,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:12,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:12,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:12,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:42:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:42:13,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-18 18:42:13,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:13,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777140364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:13,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:42:13,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-18 18:42:13,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781335405] [2022-11-18 18:42:13,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:13,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:42:13,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:13,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:42:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:42:13,550 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) [2022-11-18 18:42:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:13,836 INFO L93 Difference]: Finished difference Result 596 states and 820 transitions. [2022-11-18 18:42:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:42:13,837 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 [2022-11-18 18:42:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:13,840 INFO L225 Difference]: With dead ends: 596 [2022-11-18 18:42:13,840 INFO L226 Difference]: Without dead ends: 323 [2022-11-18 18:42:13,843 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 [2022-11-18 18:42:13,845 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 [2022-11-18 18:42:13,845 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] [2022-11-18 18:42:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-18 18:42:13,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-11-18 18:42:13,869 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) [2022-11-18 18:42:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 444 transitions. [2022-11-18 18:42:13,872 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 444 transitions. Word has length 156 [2022-11-18 18:42:13,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:13,873 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 444 transitions. [2022-11-18 18:42:13,873 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) [2022-11-18 18:42:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 444 transitions. [2022-11-18 18:42:13,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-18 18:42:13,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:13,876 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] [2022-11-18 18:42:13,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:14,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:14,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:14,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1288218285, now seen corresponding path program 1 times [2022-11-18 18:42:14,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:14,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855200790] [2022-11-18 18:42:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:14,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:42:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:42:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:42:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 18:42:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:42:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 18:42:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:42:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 18:42:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 18:42:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 18:42:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:42:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:42:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 18:42:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:42:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:42:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 18:42:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:42:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 18:42:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 18:42:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 18:42:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-18 18:42:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 18:42:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-18 18:42:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-18 18:42:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-18 18:42:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-18 18:42:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-18 18:42:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-18 18:42:15,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:15,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855200790] [2022-11-18 18:42:15,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855200790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:15,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771086096] [2022-11-18 18:42:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:15,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:15,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:15,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:15,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:42:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 2376 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:42:15,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-18 18:42:15,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:15,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771086096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:15,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:42:15,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-18 18:42:15,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627667455] [2022-11-18 18:42:15,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:15,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:42:15,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:42:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:42:15,749 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) [2022-11-18 18:42:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:16,247 INFO L93 Difference]: Finished difference Result 619 states and 867 transitions. [2022-11-18 18:42:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:42:16,248 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 [2022-11-18 18:42:16,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:16,251 INFO L225 Difference]: With dead ends: 619 [2022-11-18 18:42:16,251 INFO L226 Difference]: Without dead ends: 344 [2022-11-18 18:42:16,253 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 [2022-11-18 18:42:16,254 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 [2022-11-18 18:42:16,254 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] [2022-11-18 18:42:16,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-18 18:42:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 342. [2022-11-18 18:42:16,277 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) [2022-11-18 18:42:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-18 18:42:16,280 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 164 [2022-11-18 18:42:16,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:16,281 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-18 18:42:16,281 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) [2022-11-18 18:42:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-18 18:42:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 18:42:16,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:16,284 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] [2022-11-18 18:42:16,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:16,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:16,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:16,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1645223367, now seen corresponding path program 1 times [2022-11-18 18:42:16,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:16,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210606093] [2022-11-18 18:42:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:16,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:16,578 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:16,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081971564] [2022-11-18 18:42:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:16,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:16,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:16,579 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:16,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:42:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:42:17,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-18 18:42:17,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:17,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:17,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210606093] [2022-11-18 18:42:17,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:17,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081971564] [2022-11-18 18:42:17,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081971564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:17,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:17,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:42:17,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224819442] [2022-11-18 18:42:17,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:17,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:42:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:17,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:42:17,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:42:17,272 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) [2022-11-18 18:42:17,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:17,660 INFO L93 Difference]: Finished difference Result 644 states and 916 transitions. [2022-11-18 18:42:17,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:42:17,661 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 [2022-11-18 18:42:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:17,666 INFO L225 Difference]: With dead ends: 644 [2022-11-18 18:42:17,667 INFO L226 Difference]: Without dead ends: 350 [2022-11-18 18:42:17,669 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 [2022-11-18 18:42:17,672 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 [2022-11-18 18:42:17,676 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] [2022-11-18 18:42:17,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-18 18:42:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2022-11-18 18:42:17,714 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) [2022-11-18 18:42:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-18 18:42:17,724 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 179 [2022-11-18 18:42:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:17,725 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-18 18:42:17,725 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) [2022-11-18 18:42:17,725 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-18 18:42:17,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-18 18:42:17,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:17,730 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] [2022-11-18 18:42:17,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:17,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:17,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:17,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:17,940 INFO L85 PathProgramCache]: Analyzing trace with hash 706739126, now seen corresponding path program 1 times [2022-11-18 18:42:17,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:17,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215153160] [2022-11-18 18:42:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:17,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:18,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:18,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916237115] [2022-11-18 18:42:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:18,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:18,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:18,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:18,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:42:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:18,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:42:18,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-18 18:42:18,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:18,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:18,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215153160] [2022-11-18 18:42:18,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:18,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916237115] [2022-11-18 18:42:18,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916237115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:18,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:18,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:42:18,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062528447] [2022-11-18 18:42:18,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:18,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:42:18,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:18,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:42:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:42:18,771 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) [2022-11-18 18:42:19,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:19,373 INFO L93 Difference]: Finished difference Result 654 states and 929 transitions. [2022-11-18 18:42:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:42:19,374 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 [2022-11-18 18:42:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:19,376 INFO L225 Difference]: With dead ends: 654 [2022-11-18 18:42:19,376 INFO L226 Difference]: Without dead ends: 360 [2022-11-18 18:42:19,378 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 [2022-11-18 18:42:19,379 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 [2022-11-18 18:42:19,379 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] [2022-11-18 18:42:19,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-18 18:42:19,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 342. [2022-11-18 18:42:19,399 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) [2022-11-18 18:42:19,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-18 18:42:19,403 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 195 [2022-11-18 18:42:19,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:19,403 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-18 18:42:19,404 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) [2022-11-18 18:42:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-18 18:42:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-18 18:42:19,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:19,407 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] [2022-11-18 18:42:19,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:19,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:19,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:19,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1820952612, now seen corresponding path program 2 times [2022-11-18 18:42:19,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:19,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299000004] [2022-11-18 18:42:19,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:19,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:19,694 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:19,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994438990] [2022-11-18 18:42:19,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:42:19,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:19,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:19,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:19,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:42:20,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:42:20,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:20,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:42:20,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:20,434 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-18 18:42:20,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:20,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:20,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299000004] [2022-11-18 18:42:20,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:20,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994438990] [2022-11-18 18:42:20,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994438990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:20,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:20,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:42:20,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690705322] [2022-11-18 18:42:20,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:20,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:42:20,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:20,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:42:20,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:42:20,437 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2022-11-18 18:42:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:20,924 INFO L93 Difference]: Finished difference Result 604 states and 860 transitions. [2022-11-18 18:42:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:42:20,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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 210 [2022-11-18 18:42:20,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:20,927 INFO L225 Difference]: With dead ends: 604 [2022-11-18 18:42:20,927 INFO L226 Difference]: Without dead ends: 344 [2022-11-18 18:42:20,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:42:20,930 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 484 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:20,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 2116 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:42:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-18 18:42:20,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2022-11-18 18:42:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 211 states have (on average 1.2132701421800949) internal successors, (256), 214 states have internal predecessors, (256), 106 states have call successors, (106), 23 states have call predecessors, (106), 26 states have return successors, (122), 106 states have call predecessors, (122), 105 states have call successors, (122) [2022-11-18 18:42:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 484 transitions. [2022-11-18 18:42:20,952 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 484 transitions. Word has length 210 [2022-11-18 18:42:20,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:20,953 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 484 transitions. [2022-11-18 18:42:20,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2022-11-18 18:42:20,953 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 484 transitions. [2022-11-18 18:42:20,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-18 18:42:20,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:20,957 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] [2022-11-18 18:42:20,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:21,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:21,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:21,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1993898586, now seen corresponding path program 1 times [2022-11-18 18:42:21,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:21,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430689771] [2022-11-18 18:42:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:21,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:21,246 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:21,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817270935] [2022-11-18 18:42:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:21,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:21,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:21,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:21,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:42:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:42:21,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-18 18:42:22,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:22,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:22,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430689771] [2022-11-18 18:42:22,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:22,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817270935] [2022-11-18 18:42:22,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817270935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:22,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:22,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:42:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499097666] [2022-11-18 18:42:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:22,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:42:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:42:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:42:22,035 INFO L87 Difference]: Start difference. First operand 344 states and 484 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2022-11-18 18:42:22,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:22,572 INFO L93 Difference]: Finished difference Result 609 states and 867 transitions. [2022-11-18 18:42:22,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:42:22,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 233 [2022-11-18 18:42:22,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:22,576 INFO L225 Difference]: With dead ends: 609 [2022-11-18 18:42:22,576 INFO L226 Difference]: Without dead ends: 347 [2022-11-18 18:42:22,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:42:22,578 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 508 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:22,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2415 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:42:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-18 18:42:22,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2022-11-18 18:42:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 212 states have (on average 1.2122641509433962) internal successors, (257), 215 states have internal predecessors, (257), 106 states have call successors, (106), 23 states have call predecessors, (106), 26 states have return successors, (122), 106 states have call predecessors, (122), 105 states have call successors, (122) [2022-11-18 18:42:22,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 485 transitions. [2022-11-18 18:42:22,603 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 485 transitions. Word has length 233 [2022-11-18 18:42:22,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:22,604 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 485 transitions. [2022-11-18 18:42:22,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2022-11-18 18:42:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 485 transitions. [2022-11-18 18:42:22,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-18 18:42:22,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:22,609 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] [2022-11-18 18:42:22,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:22,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:42:22,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:22,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:22,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1572092851, now seen corresponding path program 1 times [2022-11-18 18:42:22,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:22,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020712869] [2022-11-18 18:42:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:22,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:22,905 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:22,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002282173] [2022-11-18 18:42:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:22,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:22,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:22,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:22,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:42:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:23,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2852 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:42:23,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-18 18:42:23,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-11-18 18:42:24,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:24,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020712869] [2022-11-18 18:42:24,218 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:24,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002282173] [2022-11-18 18:42:24,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002282173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:24,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:24,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-18 18:42:24,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562170676] [2022-11-18 18:42:24,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:24,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:42:24,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:24,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:42:24,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:42:24,221 INFO L87 Difference]: Start difference. First operand 345 states and 485 transitions. Second operand has 16 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (57), 4 states have call predecessors, (57), 4 states have return successors, (53), 5 states have call predecessors, (53), 9 states have call successors, (53) [2022-11-18 18:42:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:25,040 INFO L93 Difference]: Finished difference Result 627 states and 892 transitions. [2022-11-18 18:42:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:42:25,041 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (57), 4 states have call predecessors, (57), 4 states have return successors, (53), 5 states have call predecessors, (53), 9 states have call successors, (53) Word has length 234 [2022-11-18 18:42:25,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:25,049 INFO L225 Difference]: With dead ends: 627 [2022-11-18 18:42:25,050 INFO L226 Difference]: Without dead ends: 364 [2022-11-18 18:42:25,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 453 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:42:25,052 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 601 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 3377 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:25,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 3377 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:42:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-18 18:42:25,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 358. [2022-11-18 18:42:25,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 224 states have (on average 1.2232142857142858) internal successors, (274), 226 states have internal predecessors, (274), 107 states have call successors, (107), 23 states have call predecessors, (107), 26 states have return successors, (123), 108 states have call predecessors, (123), 106 states have call successors, (123) [2022-11-18 18:42:25,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 504 transitions. [2022-11-18 18:42:25,087 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 504 transitions. Word has length 234 [2022-11-18 18:42:25,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:25,088 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 504 transitions. [2022-11-18 18:42:25,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (57), 4 states have call predecessors, (57), 4 states have return successors, (53), 5 states have call predecessors, (53), 9 states have call successors, (53) [2022-11-18 18:42:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 504 transitions. [2022-11-18 18:42:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-18 18:42:25,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:25,095 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] [2022-11-18 18:42:25,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:25,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:25,304 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:25,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:25,305 INFO L85 PathProgramCache]: Analyzing trace with hash -755550831, now seen corresponding path program 2 times [2022-11-18 18:42:25,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:25,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856935143] [2022-11-18 18:42:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:25,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:25,402 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:25,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459470339] [2022-11-18 18:42:25,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:42:25,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:25,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:25,404 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:25,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:42:26,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:42:26,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:26,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:42:26,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-18 18:42:26,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:26,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:26,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856935143] [2022-11-18 18:42:26,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:26,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459470339] [2022-11-18 18:42:26,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459470339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:26,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:26,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:42:26,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843006012] [2022-11-18 18:42:26,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:26,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:42:26,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:26,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:42:26,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:42:26,307 INFO L87 Difference]: Start difference. First operand 358 states and 504 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 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) [2022-11-18 18:42:26,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:26,957 INFO L93 Difference]: Finished difference Result 641 states and 913 transitions. [2022-11-18 18:42:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:42:26,958 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 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 264 [2022-11-18 18:42:26,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:26,960 INFO L225 Difference]: With dead ends: 641 [2022-11-18 18:42:26,961 INFO L226 Difference]: Without dead ends: 370 [2022-11-18 18:42:26,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:42:26,963 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 488 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:26,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 2747 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:42:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-18 18:42:26,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2022-11-18 18:42:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 230 states have (on average 1.2217391304347827) internal successors, (281), 232 states have internal predecessors, (281), 112 states have call successors, (112), 24 states have call predecessors, (112), 27 states have return successors, (128), 113 states have call predecessors, (128), 111 states have call successors, (128) [2022-11-18 18:42:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 521 transitions. [2022-11-18 18:42:26,986 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 521 transitions. Word has length 264 [2022-11-18 18:42:26,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:26,986 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 521 transitions. [2022-11-18 18:42:26,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 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) [2022-11-18 18:42:26,987 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 521 transitions. [2022-11-18 18:42:26,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-18 18:42:26,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:26,989 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] [2022-11-18 18:42:27,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:27,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:27,200 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:27,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:27,201 INFO L85 PathProgramCache]: Analyzing trace with hash 854827913, now seen corresponding path program 1 times [2022-11-18 18:42:27,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:27,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081082477] [2022-11-18 18:42:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:27,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:27,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:27,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692541704] [2022-11-18 18:42:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:27,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:27,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:27,295 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:27,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:42:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:28,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 3416 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:42:28,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-18 18:42:28,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:28,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:28,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081082477] [2022-11-18 18:42:28,218 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:28,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692541704] [2022-11-18 18:42:28,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692541704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:28,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:28,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:42:28,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799435889] [2022-11-18 18:42:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:28,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:42:28,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:28,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:42:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:42:28,222 INFO L87 Difference]: Start difference. First operand 370 states and 521 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-18 18:42:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:28,672 INFO L93 Difference]: Finished difference Result 746 states and 1072 transitions. [2022-11-18 18:42:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:42:28,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 294 [2022-11-18 18:42:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:28,676 INFO L225 Difference]: With dead ends: 746 [2022-11-18 18:42:28,676 INFO L226 Difference]: Without dead ends: 424 [2022-11-18 18:42:28,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:42:28,679 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 23 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:28,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2016 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:42:28,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-18 18:42:28,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 382. [2022-11-18 18:42:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 242 states have (on average 1.2231404958677685) internal successors, (296), 244 states have internal predecessors, (296), 112 states have call successors, (112), 24 states have call predecessors, (112), 27 states have return successors, (128), 113 states have call predecessors, (128), 111 states have call successors, (128) [2022-11-18 18:42:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 536 transitions. [2022-11-18 18:42:28,706 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 536 transitions. Word has length 294 [2022-11-18 18:42:28,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:28,706 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 536 transitions. [2022-11-18 18:42:28,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-18 18:42:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 536 transitions. [2022-11-18 18:42:28,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-18 18:42:28,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:28,709 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] [2022-11-18 18:42:28,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:28,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:42:28,920 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:28,921 INFO L85 PathProgramCache]: Analyzing trace with hash -650350645, now seen corresponding path program 1 times [2022-11-18 18:42:28,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:28,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847895568] [2022-11-18 18:42:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:28,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:29,017 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:29,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169979828] [2022-11-18 18:42:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:29,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:29,019 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:29,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:42:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:29,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:42:29,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-18 18:42:29,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:29,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:29,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847895568] [2022-11-18 18:42:29,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:29,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169979828] [2022-11-18 18:42:29,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169979828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:29,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:29,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:42:29,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086271969] [2022-11-18 18:42:29,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:29,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:29,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:29,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:29,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:29,832 INFO L87 Difference]: Start difference. First operand 382 states and 536 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-18 18:42:29,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:29,885 INFO L93 Difference]: Finished difference Result 728 states and 1036 transitions. [2022-11-18 18:42:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:29,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 279 [2022-11-18 18:42:29,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:29,889 INFO L225 Difference]: With dead ends: 728 [2022-11-18 18:42:29,889 INFO L226 Difference]: Without dead ends: 394 [2022-11-18 18:42:29,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:42:29,892 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 3 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:29,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1303 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:42:29,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-18 18:42:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 388. [2022-11-18 18:42:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 248 states have (on average 1.217741935483871) internal successors, (302), 250 states have internal predecessors, (302), 112 states have call successors, (112), 24 states have call predecessors, (112), 27 states have return successors, (128), 113 states have call predecessors, (128), 111 states have call successors, (128) [2022-11-18 18:42:29,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 542 transitions. [2022-11-18 18:42:29,919 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 542 transitions. Word has length 279 [2022-11-18 18:42:29,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:29,919 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 542 transitions. [2022-11-18 18:42:29,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-18 18:42:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 542 transitions. [2022-11-18 18:42:29,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-18 18:42:29,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:29,922 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] [2022-11-18 18:42:29,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:30,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:30,137 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:30,138 INFO L85 PathProgramCache]: Analyzing trace with hash -351746489, now seen corresponding path program 1 times [2022-11-18 18:42:30,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:30,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066182656] [2022-11-18 18:42:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:30,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:30,266 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:30,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961086991] [2022-11-18 18:42:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:30,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:30,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:30,268 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:30,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:42:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 3259 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:42:31,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-18 18:42:31,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:31,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:31,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066182656] [2022-11-18 18:42:31,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:31,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961086991] [2022-11-18 18:42:31,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961086991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:31,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:31,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:42:31,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831717173] [2022-11-18 18:42:31,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:31,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:42:31,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:42:31,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:42:31,224 INFO L87 Difference]: Start difference. First operand 388 states and 542 transitions. Second operand has 11 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-18 18:42:32,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:32,006 INFO L93 Difference]: Finished difference Result 696 states and 980 transitions. [2022-11-18 18:42:32,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:42:32,007 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) Word has length 279 [2022-11-18 18:42:32,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:32,010 INFO L225 Difference]: With dead ends: 696 [2022-11-18 18:42:32,010 INFO L226 Difference]: Without dead ends: 390 [2022-11-18 18:42:32,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:42:32,013 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 579 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:32,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 2970 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:42:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-18 18:42:32,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 366. [2022-11-18 18:42:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 228 states have (on average 1.2105263157894737) internal successors, (276), 230 states have internal predecessors, (276), 111 states have call successors, (111), 24 states have call predecessors, (111), 26 states have return successors, (123), 111 states have call predecessors, (123), 110 states have call successors, (123) [2022-11-18 18:42:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 510 transitions. [2022-11-18 18:42:32,039 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 510 transitions. Word has length 279 [2022-11-18 18:42:32,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:32,041 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 510 transitions. [2022-11-18 18:42:32,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-18 18:42:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 510 transitions. [2022-11-18 18:42:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-18 18:42:32,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:32,044 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] [2022-11-18 18:42:32,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:32,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:32,260 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:32,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1563569161, now seen corresponding path program 1 times [2022-11-18 18:42:32,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:32,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965988127] [2022-11-18 18:42:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:32,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:32,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776575118] [2022-11-18 18:42:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:32,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:32,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:32,391 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:32,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:42:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:33,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 3400 conjuncts, 137 conjunts are in the unsatisfiable core [2022-11-18 18:42:33,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:33,304 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 5 [2022-11-18 18:42:33,883 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:42:34,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:34,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:42:34,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:34,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:42:34,398 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1616 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1616))) is different from true [2022-11-18 18:42:34,647 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1617 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1617))) is different from true [2022-11-18 18:42:40,826 WARN L859 $PredicateComparison]: unable to prove that (and (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short852#1|) (= (mod (select (select |c_#memory_int| |c_aws_priority_queue_is_valid_#in~queue#1.base|) (+ 56 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) 18446744073709551616) 0) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1617 (Array Int Int)) (v_ArrVal_1616 (Array Int Int))) (and (= (store (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_1616) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1617) |c_#memory_int|) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)))) is different from true [2022-11-18 18:42:40,846 WARN L859 $PredicateComparison]: unable to prove that (and (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short854#1|) (= (mod (select (select |c_#memory_int| |c_aws_priority_queue_is_valid_#in~queue#1.base|) (+ 56 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) 18446744073709551616) 0) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1617 (Array Int Int)) (v_ArrVal_1616 (Array Int Int))) (and (= (store (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_1616) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1617) |c_#memory_int|) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)))) is different from true [2022-11-18 18:42:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 253 proven. 35 refuted. 0 times theorem prover too weak. 236 trivial. 3 not checked. [2022-11-18 18:42:40,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:58,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:58,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965988127] [2022-11-18 18:42:58,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:58,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776575118] [2022-11-18 18:42:58,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776575118] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:58,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:42:58,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-18 18:42:58,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519055973] [2022-11-18 18:42:58,898 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:58,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:42:58,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:58,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:42:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1702, Unknown=59, NotChecked=348, Total=2256 [2022-11-18 18:42:58,900 INFO L87 Difference]: Start difference. First operand 366 states and 510 transitions. Second operand has 32 states, 30 states have (on average 4.233333333333333) internal successors, (127), 28 states have internal predecessors, (127), 13 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) [2022-11-18 18:43:08,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:08,208 INFO L93 Difference]: Finished difference Result 907 states and 1343 transitions. [2022-11-18 18:43:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 18:43:08,209 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 4.233333333333333) internal successors, (127), 28 states have internal predecessors, (127), 13 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) Word has length 294 [2022-11-18 18:43:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:08,213 INFO L225 Difference]: With dead ends: 907 [2022-11-18 18:43:08,213 INFO L226 Difference]: Without dead ends: 589 [2022-11-18 18:43:08,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 406 SyntacticMatches, 20 SemanticMatches, 60 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=253, Invalid=2992, Unknown=77, NotChecked=460, Total=3782 [2022-11-18 18:43:08,217 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 480 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 3965 SdHoareTripleChecker+Invalid, 10077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7176 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:08,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 3965 Invalid, 10077 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [404 Valid, 2497 Invalid, 0 Unknown, 7176 Unchecked, 2.5s Time] [2022-11-18 18:43:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-18 18:43:08,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 413. [2022-11-18 18:43:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 263 states have (on average 1.2129277566539924) internal successors, (319), 267 states have internal predecessors, (319), 115 states have call successors, (115), 29 states have call predecessors, (115), 34 states have return successors, (144), 116 states have call predecessors, (144), 114 states have call successors, (144) [2022-11-18 18:43:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 578 transitions. [2022-11-18 18:43:08,254 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 578 transitions. Word has length 294 [2022-11-18 18:43:08,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:08,255 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 578 transitions. [2022-11-18 18:43:08,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 4.233333333333333) internal successors, (127), 28 states have internal predecessors, (127), 13 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) [2022-11-18 18:43:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 578 transitions. [2022-11-18 18:43:08,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-18 18:43:08,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:08,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:08,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:08,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:08,470 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:08,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash 110060873, now seen corresponding path program 1 times [2022-11-18 18:43:08,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:08,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506389439] [2022-11-18 18:43:08,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:08,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:08,584 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:08,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528439306] [2022-11-18 18:43:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:08,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:08,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:08,585 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:08,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:43:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:09,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 3390 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:43:09,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-18 18:43:09,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:09,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:09,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506389439] [2022-11-18 18:43:09,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:09,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528439306] [2022-11-18 18:43:09,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528439306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:09,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:09,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:43:09,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377572607] [2022-11-18 18:43:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:09,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:43:09,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:09,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:43:09,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:43:09,443 INFO L87 Difference]: Start difference. First operand 413 states and 578 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-18 18:43:09,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:09,495 INFO L93 Difference]: Finished difference Result 765 states and 1112 transitions. [2022-11-18 18:43:09,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:43:09,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 294 [2022-11-18 18:43:09,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:09,499 INFO L225 Difference]: With dead ends: 765 [2022-11-18 18:43:09,499 INFO L226 Difference]: Without dead ends: 418 [2022-11-18 18:43:09,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:09,502 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 7 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:09,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1309 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:43:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-18 18:43:09,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 415. [2022-11-18 18:43:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 265 states have (on average 1.211320754716981) internal successors, (321), 269 states have internal predecessors, (321), 115 states have call successors, (115), 29 states have call predecessors, (115), 34 states have return successors, (144), 116 states have call predecessors, (144), 114 states have call successors, (144) [2022-11-18 18:43:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 580 transitions. [2022-11-18 18:43:09,530 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 580 transitions. Word has length 294 [2022-11-18 18:43:09,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:09,531 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 580 transitions. [2022-11-18 18:43:09,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-18 18:43:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 580 transitions. [2022-11-18 18:43:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-18 18:43:09,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:09,534 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, 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] [2022-11-18 18:43:09,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:09,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:43:09,744 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:09,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:09,745 INFO L85 PathProgramCache]: Analyzing trace with hash 229448329, now seen corresponding path program 1 times [2022-11-18 18:43:09,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:09,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293823075] [2022-11-18 18:43:09,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:09,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:09,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:09,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864054395] [2022-11-18 18:43:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:09,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:09,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:09,837 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:09,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:43:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:10,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:43:10,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-11-18 18:43:10,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:10,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:10,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293823075] [2022-11-18 18:43:10,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:10,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864054395] [2022-11-18 18:43:10,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864054395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:10,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:10,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:10,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255362018] [2022-11-18 18:43:10,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:10,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:43:10,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:43:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:10,742 INFO L87 Difference]: Start difference. First operand 415 states and 580 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-18 18:43:11,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:11,068 INFO L93 Difference]: Finished difference Result 772 states and 1131 transitions. [2022-11-18 18:43:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:11,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 298 [2022-11-18 18:43:11,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:11,095 INFO L225 Difference]: With dead ends: 772 [2022-11-18 18:43:11,095 INFO L226 Difference]: Without dead ends: 423 [2022-11-18 18:43:11,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:43:11,098 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 15 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:11,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1652 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:43:11,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-18 18:43:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 416. [2022-11-18 18:43:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 266 states have (on average 1.2105263157894737) internal successors, (322), 270 states have internal predecessors, (322), 115 states have call successors, (115), 29 states have call predecessors, (115), 34 states have return successors, (144), 116 states have call predecessors, (144), 114 states have call successors, (144) [2022-11-18 18:43:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 581 transitions. [2022-11-18 18:43:11,129 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 581 transitions. Word has length 298 [2022-11-18 18:43:11,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:11,130 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 581 transitions. [2022-11-18 18:43:11,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-18 18:43:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 581 transitions. [2022-11-18 18:43:11,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-18 18:43:11,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:11,133 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, 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, 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] [2022-11-18 18:43:11,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-18 18:43:11,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:43:11,344 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:11,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1328058509, now seen corresponding path program 1 times [2022-11-18 18:43:11,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:11,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613784267] [2022-11-18 18:43:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:11,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:11,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126562669] [2022-11-18 18:43:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:11,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:11,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:11,423 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:11,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:43:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:12,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 18:43:12,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 201 proven. 1 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-11-18 18:43:12,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 70 proven. 13 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2022-11-18 18:43:13,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:13,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613784267] [2022-11-18 18:43:13,366 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:13,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126562669] [2022-11-18 18:43:13,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126562669] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:13,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:43:13,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2022-11-18 18:43:13,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440900743] [2022-11-18 18:43:13,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:13,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:43:13,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:43:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:43:13,368 INFO L87 Difference]: Start difference. First operand 416 states and 581 transitions. Second operand has 22 states, 18 states have (on average 7.055555555555555) internal successors, (127), 15 states have internal predecessors, (127), 6 states have call successors, (39), 3 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 5 states have call successors, (39) [2022-11-18 18:43:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:14,097 INFO L93 Difference]: Finished difference Result 737 states and 1062 transitions. [2022-11-18 18:43:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:43:14,098 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.055555555555555) internal successors, (127), 15 states have internal predecessors, (127), 6 states have call successors, (39), 3 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 5 states have call successors, (39) Word has length 322 [2022-11-18 18:43:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:14,102 INFO L225 Difference]: With dead ends: 737 [2022-11-18 18:43:14,102 INFO L226 Difference]: Without dead ends: 430 [2022-11-18 18:43:14,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 618 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:43:14,105 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 20 mSDsluCounter, 6698 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 7128 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:14,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 7128 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:43:14,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-11-18 18:43:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 424. [2022-11-18 18:43:14,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 273 states have (on average 1.2087912087912087) internal successors, (330), 278 states have internal predecessors, (330), 115 states have call successors, (115), 29 states have call predecessors, (115), 35 states have return successors, (155), 116 states have call predecessors, (155), 114 states have call successors, (155) [2022-11-18 18:43:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 600 transitions. [2022-11-18 18:43:14,138 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 600 transitions. Word has length 322 [2022-11-18 18:43:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:14,139 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 600 transitions. [2022-11-18 18:43:14,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.055555555555555) internal successors, (127), 15 states have internal predecessors, (127), 6 states have call successors, (39), 3 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 5 states have call successors, (39) [2022-11-18 18:43:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 600 transitions. [2022-11-18 18:43:14,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-18 18:43:14,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:14,142 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, 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] [2022-11-18 18:43:14,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:14,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:43:14,360 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:14,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:14,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1838675657, now seen corresponding path program 1 times [2022-11-18 18:43:14,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:14,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400904017] [2022-11-18 18:43:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:14,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:14,446 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:14,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24677423] [2022-11-18 18:43:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:14,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:14,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:14,448 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:14,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:43:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:15,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 3410 conjuncts, 127 conjunts are in the unsatisfiable core [2022-11-18 18:43:15,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:15,346 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 5 [2022-11-18 18:43:15,936 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:15,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:16,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:16,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:16,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:16,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:16,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:16,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:16,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:16,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:16,772 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2423 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2423))) (exists ((v_ArrVal_2422 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2422)))) is different from true [2022-11-18 18:43:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 265 proven. 35 refuted. 3 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-18 18:43:17,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:18,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:18,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400904017] [2022-11-18 18:43:18,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:18,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24677423] [2022-11-18 18:43:18,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24677423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:18,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:43:18,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-11-18 18:43:18,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161834337] [2022-11-18 18:43:18,765 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:18,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 18:43:18,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 18:43:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1137, Unknown=11, NotChecked=68, Total=1332 [2022-11-18 18:43:18,766 INFO L87 Difference]: Start difference. First operand 424 states and 600 transitions. Second operand has 30 states, 27 states have (on average 5.222222222222222) internal successors, (141), 26 states have internal predecessors, (141), 13 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (36), 9 states have call predecessors, (36), 13 states have call successors, (36) [2022-11-18 18:43:23,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:23,130 INFO L93 Difference]: Finished difference Result 1030 states and 1549 transitions. [2022-11-18 18:43:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 18:43:23,131 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 5.222222222222222) internal successors, (141), 26 states have internal predecessors, (141), 13 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (36), 9 states have call predecessors, (36), 13 states have call successors, (36) Word has length 298 [2022-11-18 18:43:23,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:23,135 INFO L225 Difference]: With dead ends: 1030 [2022-11-18 18:43:23,135 INFO L226 Difference]: Without dead ends: 672 [2022-11-18 18:43:23,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 399 SyntacticMatches, 18 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=217, Invalid=2019, Unknown=24, NotChecked=92, Total=2352 [2022-11-18 18:43:23,139 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 364 mSDsluCounter, 4216 mSDsCounter, 0 mSdLazyCounter, 3785 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 8452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 3785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4292 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:23,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 4586 Invalid, 8452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 3785 Invalid, 0 Unknown, 4292 Unchecked, 3.5s Time] [2022-11-18 18:43:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-11-18 18:43:23,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 455. [2022-11-18 18:43:23,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 299 states have (on average 1.214046822742475) internal successors, (363), 306 states have internal predecessors, (363), 117 states have call successors, (117), 29 states have call predecessors, (117), 38 states have return successors, (184), 119 states have call predecessors, (184), 116 states have call successors, (184) [2022-11-18 18:43:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 664 transitions. [2022-11-18 18:43:23,191 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 664 transitions. Word has length 298 [2022-11-18 18:43:23,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:23,192 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 664 transitions. [2022-11-18 18:43:23,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 5.222222222222222) internal successors, (141), 26 states have internal predecessors, (141), 13 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (36), 9 states have call predecessors, (36), 13 states have call successors, (36) [2022-11-18 18:43:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 664 transitions. [2022-11-18 18:43:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-18 18:43:23,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:23,195 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, 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, 1, 1, 1, 1] [2022-11-18 18:43:23,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:23,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:43:23,408 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:23,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:23,408 INFO L85 PathProgramCache]: Analyzing trace with hash -165598548, now seen corresponding path program 1 times [2022-11-18 18:43:23,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:23,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096226264] [2022-11-18 18:43:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:23,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:23,488 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:23,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457260003] [2022-11-18 18:43:23,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:23,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:23,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:23,490 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:23,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 18:43:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:24,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 3425 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:43:24,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-18 18:43:24,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:24,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:24,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096226264] [2022-11-18 18:43:24,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:24,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457260003] [2022-11-18 18:43:24,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457260003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:24,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:24,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:24,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264489062] [2022-11-18 18:43:24,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:24,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:43:24,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:24,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:43:24,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:24,444 INFO L87 Difference]: Start difference. First operand 455 states and 664 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-11-18 18:43:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:24,514 INFO L93 Difference]: Finished difference Result 876 states and 1309 transitions. [2022-11-18 18:43:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:24,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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 316 [2022-11-18 18:43:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:24,522 INFO L225 Difference]: With dead ends: 876 [2022-11-18 18:43:24,522 INFO L226 Difference]: Without dead ends: 491 [2022-11-18 18:43:24,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:24,526 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 8 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:24,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1790 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:43:24,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-18 18:43:24,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 471. [2022-11-18 18:43:24,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 315 states have (on average 1.2158730158730158) internal successors, (383), 322 states have internal predecessors, (383), 117 states have call successors, (117), 29 states have call predecessors, (117), 38 states have return successors, (184), 119 states have call predecessors, (184), 116 states have call successors, (184) [2022-11-18 18:43:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 684 transitions. [2022-11-18 18:43:24,575 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 684 transitions. Word has length 316 [2022-11-18 18:43:24,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:24,575 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 684 transitions. [2022-11-18 18:43:24,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-11-18 18:43:24,576 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 684 transitions. [2022-11-18 18:43:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-18 18:43:24,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:24,579 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, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:24,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:24,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:43:24,791 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:24,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:24,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1420548150, now seen corresponding path program 1 times [2022-11-18 18:43:24,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:24,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297674087] [2022-11-18 18:43:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:24,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:24,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:24,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296420311] [2022-11-18 18:43:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:24,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:24,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:24,906 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:24,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 18:43:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:25,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 3457 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:43:25,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-18 18:43:25,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:25,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:25,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297674087] [2022-11-18 18:43:25,790 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:25,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296420311] [2022-11-18 18:43:25,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296420311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:25,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:25,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:43:25,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551154296] [2022-11-18 18:43:25,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:25,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:43:25,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:43:25,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:43:25,793 INFO L87 Difference]: Start difference. First operand 471 states and 684 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-18 18:43:25,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:25,847 INFO L93 Difference]: Finished difference Result 862 states and 1279 transitions. [2022-11-18 18:43:25,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:43:25,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 314 [2022-11-18 18:43:25,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:25,852 INFO L225 Difference]: With dead ends: 862 [2022-11-18 18:43:25,852 INFO L226 Difference]: Without dead ends: 461 [2022-11-18 18:43:25,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:25,856 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 2 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:25,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1306 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:43:25,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-18 18:43:25,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 455. [2022-11-18 18:43:25,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 299 states have (on average 1.1973244147157192) internal successors, (358), 306 states have internal predecessors, (358), 117 states have call successors, (117), 29 states have call predecessors, (117), 38 states have return successors, (184), 119 states have call predecessors, (184), 116 states have call successors, (184) [2022-11-18 18:43:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 659 transitions. [2022-11-18 18:43:25,896 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 659 transitions. Word has length 314 [2022-11-18 18:43:25,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:25,896 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 659 transitions. [2022-11-18 18:43:25,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-18 18:43:25,897 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 659 transitions. [2022-11-18 18:43:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-18 18:43:25,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:25,900 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, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:25,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:26,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:26,111 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:26,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2028954741, now seen corresponding path program 1 times [2022-11-18 18:43:26,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:26,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569466996] [2022-11-18 18:43:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:26,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:26,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:26,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232346549] [2022-11-18 18:43:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:26,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:26,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:26,210 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:26,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 18:43:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:27,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 3461 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 18:43:27,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-18 18:43:27,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:27,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:27,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569466996] [2022-11-18 18:43:27,202 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:27,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232346549] [2022-11-18 18:43:27,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232346549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:27,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:27,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:43:27,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656966534] [2022-11-18 18:43:27,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:27,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:43:27,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:27,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:43:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:43:27,205 INFO L87 Difference]: Start difference. First operand 455 states and 659 transitions. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 9 states have internal predecessors, (139), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (38), 5 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-18 18:43:27,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:27,421 INFO L93 Difference]: Finished difference Result 858 states and 1266 transitions. [2022-11-18 18:43:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:43:27,422 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 9 states have internal predecessors, (139), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (38), 5 states have call predecessors, (38), 2 states have call successors, (38) Word has length 322 [2022-11-18 18:43:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:27,425 INFO L225 Difference]: With dead ends: 858 [2022-11-18 18:43:27,425 INFO L226 Difference]: Without dead ends: 473 [2022-11-18 18:43:27,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:43:27,429 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 18 mSDsluCounter, 4496 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4951 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:27,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4951 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:43:27,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-18 18:43:27,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 459. [2022-11-18 18:43:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 303 states have (on average 1.1947194719471947) internal successors, (362), 308 states have internal predecessors, (362), 117 states have call successors, (117), 29 states have call predecessors, (117), 38 states have return successors, (184), 121 states have call predecessors, (184), 116 states have call successors, (184) [2022-11-18 18:43:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 663 transitions. [2022-11-18 18:43:27,467 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 663 transitions. Word has length 322 [2022-11-18 18:43:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:27,468 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 663 transitions. [2022-11-18 18:43:27,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 9 states have internal predecessors, (139), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (38), 5 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-18 18:43:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 663 transitions. [2022-11-18 18:43:27,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-18 18:43:27,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:27,471 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, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:27,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:27,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:27,683 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:27,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:27,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1272422315, now seen corresponding path program 1 times [2022-11-18 18:43:27,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:27,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289925110] [2022-11-18 18:43:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:27,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:27,764 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:27,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034124513] [2022-11-18 18:43:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:27,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:27,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:27,766 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:27,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 18:43:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:28,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-18 18:43:28,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:29,107 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 9 treesize of output 3 [2022-11-18 18:43:29,109 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 9 treesize of output 3 [2022-11-18 18:43:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-18 18:43:29,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:29,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:29,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289925110] [2022-11-18 18:43:29,185 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:29,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034124513] [2022-11-18 18:43:29,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034124513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:29,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:29,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 18:43:29,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539752032] [2022-11-18 18:43:29,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:29,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:43:29,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:29,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:43:29,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:43:29,188 INFO L87 Difference]: Start difference. First operand 459 states and 663 transitions. Second operand has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 6 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) [2022-11-18 18:43:30,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:30,581 INFO L93 Difference]: Finished difference Result 937 states and 1386 transitions. [2022-11-18 18:43:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:43:30,582 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 6 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) Word has length 310 [2022-11-18 18:43:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:30,587 INFO L225 Difference]: With dead ends: 937 [2022-11-18 18:43:30,588 INFO L226 Difference]: Without dead ends: 548 [2022-11-18 18:43:30,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2022-11-18 18:43:30,592 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 135 mSDsluCounter, 3781 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:30,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 4189 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:43:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-11-18 18:43:30,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 471. [2022-11-18 18:43:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 315 states have (on average 1.2) internal successors, (378), 318 states have internal predecessors, (378), 117 states have call successors, (117), 29 states have call predecessors, (117), 38 states have return successors, (184), 123 states have call predecessors, (184), 116 states have call successors, (184) [2022-11-18 18:43:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 679 transitions. [2022-11-18 18:43:30,674 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 679 transitions. Word has length 310 [2022-11-18 18:43:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:30,675 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 679 transitions. [2022-11-18 18:43:30,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 6 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) [2022-11-18 18:43:30,675 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 679 transitions. [2022-11-18 18:43:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-18 18:43:30,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:30,678 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, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:30,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:30,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:30,891 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:30,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:30,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1250421483, now seen corresponding path program 2 times [2022-11-18 18:43:30,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:30,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967391195] [2022-11-18 18:43:30,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:30,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:30,981 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:30,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411899791] [2022-11-18 18:43:30,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:30,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:30,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:30,983 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:31,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 18:43:32,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:43:32,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:32,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 3463 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 18:43:32,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:32,388 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 11 treesize of output 5 [2022-11-18 18:43:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-18 18:43:32,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:32,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:32,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967391195] [2022-11-18 18:43:32,420 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:32,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411899791] [2022-11-18 18:43:32,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411899791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:32,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:32,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:43:32,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032866681] [2022-11-18 18:43:32,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:32,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:43:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:32,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:43:32,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:32,423 INFO L87 Difference]: Start difference. First operand 471 states and 679 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 6 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) [2022-11-18 18:43:33,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:33,365 INFO L93 Difference]: Finished difference Result 924 states and 1369 transitions. [2022-11-18 18:43:33,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:43:33,368 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 6 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) Word has length 314 [2022-11-18 18:43:33,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:33,372 INFO L225 Difference]: With dead ends: 924 [2022-11-18 18:43:33,372 INFO L226 Difference]: Without dead ends: 523 [2022-11-18 18:43:33,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:43:33,379 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 116 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 3413 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:33,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 3413 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 18:43:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-11-18 18:43:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 461. [2022-11-18 18:43:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 305 states have (on average 1.1967213114754098) internal successors, (365), 309 states have internal predecessors, (365), 117 states have call successors, (117), 29 states have call predecessors, (117), 38 states have return successors, (184), 122 states have call predecessors, (184), 116 states have call successors, (184) [2022-11-18 18:43:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 666 transitions. [2022-11-18 18:43:33,422 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 666 transitions. Word has length 314 [2022-11-18 18:43:33,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:33,423 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 666 transitions. [2022-11-18 18:43:33,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 6 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) [2022-11-18 18:43:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 666 transitions. [2022-11-18 18:43:33,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-11-18 18:43:33,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:33,426 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:33,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:33,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:33,638 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:33,639 INFO L85 PathProgramCache]: Analyzing trace with hash -409710448, now seen corresponding path program 1 times [2022-11-18 18:43:33,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:33,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594416351] [2022-11-18 18:43:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:33,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:33,727 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:33,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198146250] [2022-11-18 18:43:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:33,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:33,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:33,729 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:33,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 18:43:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:34,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 3459 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-18 18:43:34,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:35,711 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 17 [2022-11-18 18:43:35,714 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 21 treesize of output 13 [2022-11-18 18:43:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-11-18 18:43:35,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:35,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:35,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594416351] [2022-11-18 18:43:35,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:35,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198146250] [2022-11-18 18:43:35,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198146250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:35,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:35,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 18:43:35,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798527063] [2022-11-18 18:43:35,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:35,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:43:35,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:35,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:43:35,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:43:35,750 INFO L87 Difference]: Start difference. First operand 461 states and 666 transitions. Second operand has 16 states, 16 states have (on average 8.625) internal successors, (138), 15 states have internal predecessors, (138), 7 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2022-11-18 18:43:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:37,163 INFO L93 Difference]: Finished difference Result 927 states and 1370 transitions. [2022-11-18 18:43:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:43:37,164 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 15 states have internal predecessors, (138), 7 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) Word has length 308 [2022-11-18 18:43:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:37,168 INFO L225 Difference]: With dead ends: 927 [2022-11-18 18:43:37,169 INFO L226 Difference]: Without dead ends: 567 [2022-11-18 18:43:37,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-11-18 18:43:37,171 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 128 mSDsluCounter, 4462 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 4873 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:37,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 4873 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1014 Invalid, 0 Unknown, 109 Unchecked, 1.0s Time] [2022-11-18 18:43:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-18 18:43:37,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 517. [2022-11-18 18:43:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 352 states have (on average 1.1931818181818181) internal successors, (420), 356 states have internal predecessors, (420), 121 states have call successors, (121), 31 states have call predecessors, (121), 43 states have return successors, (216), 129 states have call predecessors, (216), 120 states have call successors, (216) [2022-11-18 18:43:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 757 transitions. [2022-11-18 18:43:37,217 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 757 transitions. Word has length 308 [2022-11-18 18:43:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:37,218 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 757 transitions. [2022-11-18 18:43:37,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 15 states have internal predecessors, (138), 7 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2022-11-18 18:43:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 757 transitions. [2022-11-18 18:43:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-11-18 18:43:37,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:37,221 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, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:37,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:37,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 18:43:37,434 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:37,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1292190035, now seen corresponding path program 3 times [2022-11-18 18:43:37,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:37,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606207899] [2022-11-18 18:43:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:37,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:37,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:37,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920642375] [2022-11-18 18:43:37,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:43:37,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:37,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:37,518 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:37,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 18:43:38,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 18:43:38,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:38,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:43:38,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-18 18:43:38,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:38,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:38,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606207899] [2022-11-18 18:43:38,970 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:38,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920642375] [2022-11-18 18:43:38,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920642375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:38,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:38,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:38,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614760990] [2022-11-18 18:43:38,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:38,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:43:38,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:38,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:43:38,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:38,978 INFO L87 Difference]: Start difference. First operand 517 states and 757 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-18 18:43:39,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:39,312 INFO L93 Difference]: Finished difference Result 940 states and 1443 transitions. [2022-11-18 18:43:39,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:39,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 312 [2022-11-18 18:43:39,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:39,317 INFO L225 Difference]: With dead ends: 940 [2022-11-18 18:43:39,317 INFO L226 Difference]: Without dead ends: 493 [2022-11-18 18:43:39,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:43:39,320 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 10 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:39,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1667 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:43:39,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-11-18 18:43:39,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 489. [2022-11-18 18:43:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 326 states have (on average 1.1840490797546013) internal successors, (386), 330 states have internal predecessors, (386), 121 states have call successors, (121), 31 states have call predecessors, (121), 41 states have return successors, (195), 127 states have call predecessors, (195), 120 states have call successors, (195) [2022-11-18 18:43:39,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 702 transitions. [2022-11-18 18:43:39,361 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 702 transitions. Word has length 312 [2022-11-18 18:43:39,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:39,361 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 702 transitions. [2022-11-18 18:43:39,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-18 18:43:39,362 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 702 transitions. [2022-11-18 18:43:39,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-18 18:43:39,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:39,365 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, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:39,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:39,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 18:43:39,576 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:39,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash -155678368, now seen corresponding path program 1 times [2022-11-18 18:43:39,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:39,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339728947] [2022-11-18 18:43:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:39,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:39,660 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:39,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384876854] [2022-11-18 18:43:39,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:39,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:39,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:39,662 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:39,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 18:43:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:40,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 3460 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-18 18:43:40,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:40,763 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 5 [2022-11-18 18:43:41,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:41,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:43:41,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:41,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:43:41,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-18 18:43:41,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:43:41,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:43:41,837 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4060 Int) (v_ArrVal_4061 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int) (v_ArrVal_4066 Int) (v_ArrVal_4067 Int)) (let ((.cse0 (+ ensure_array_list_has_allocated_data_member_~list.offset 32))) (and (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_4061) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_4067)) |c_#memory_$Pointer$.offset|) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_4060) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_4066)))))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_4059 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_4059)) (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0)))) is different from true [2022-11-18 18:43:41,882 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:43:41,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:43:41,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:41,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:41,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-18 18:43:41,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:41,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:41,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-18 18:43:41,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:41,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:41,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:41,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:42,147 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4072 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4072))) (exists ((v_ArrVal_4073 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4073) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 18:43:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 293 proven. 25 refuted. 3 times theorem prover too weak. 203 trivial. 2 not checked. [2022-11-18 18:43:42,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:43,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:43,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339728947] [2022-11-18 18:43:43,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:43,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384876854] [2022-11-18 18:43:43,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384876854] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:43,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:43:43,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-18 18:43:43,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680849575] [2022-11-18 18:43:43,544 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:43,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 18:43:43,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:43,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 18:43:43,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=545, Unknown=22, NotChecked=98, Total=756 [2022-11-18 18:43:43,546 INFO L87 Difference]: Start difference. First operand 489 states and 702 transitions. Second operand has 27 states, 26 states have (on average 5.923076923076923) internal successors, (154), 24 states have internal predecessors, (154), 13 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) [2022-11-18 18:43:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:45,654 INFO L93 Difference]: Finished difference Result 1124 states and 1672 transitions. [2022-11-18 18:43:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 18:43:45,655 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.923076923076923) internal successors, (154), 24 states have internal predecessors, (154), 13 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) Word has length 314 [2022-11-18 18:43:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:45,660 INFO L225 Difference]: With dead ends: 1124 [2022-11-18 18:43:45,660 INFO L226 Difference]: Without dead ends: 715 [2022-11-18 18:43:45,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 433 SyntacticMatches, 16 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=122, Invalid=782, Unknown=34, NotChecked=118, Total=1056 [2022-11-18 18:43:45,663 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 261 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 6517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4547 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:45,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 3435 Invalid, 6517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1781 Invalid, 0 Unknown, 4547 Unchecked, 1.8s Time] [2022-11-18 18:43:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-11-18 18:43:45,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 495. [2022-11-18 18:43:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 330 states have (on average 1.1818181818181819) internal successors, (390), 335 states have internal predecessors, (390), 121 states have call successors, (121), 32 states have call predecessors, (121), 43 states have return successors, (198), 127 states have call predecessors, (198), 120 states have call successors, (198) [2022-11-18 18:43:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 709 transitions. [2022-11-18 18:43:45,716 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 709 transitions. Word has length 314 [2022-11-18 18:43:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:45,716 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 709 transitions. [2022-11-18 18:43:45,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.923076923076923) internal successors, (154), 24 states have internal predecessors, (154), 13 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) [2022-11-18 18:43:45,717 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 709 transitions. [2022-11-18 18:43:45,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-18 18:43:45,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:45,720 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:45,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:45,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 18:43:45,933 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:45,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1346477734, now seen corresponding path program 1 times [2022-11-18 18:43:45,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:45,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690773699] [2022-11-18 18:43:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:45,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:46,031 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:46,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526123572] [2022-11-18 18:43:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:46,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:46,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:46,035 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:46,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 18:43:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:47,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 3469 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-18 18:43:47,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:47,113 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 5 [2022-11-18 18:43:47,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:47,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:43:47,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:47,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:43:47,889 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) is different from true [2022-11-18 18:43:48,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:43:48,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:43:48,009 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 5 [2022-11-18 18:43:48,082 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 5 [2022-11-18 18:43:48,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:43:48,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:43:48,174 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4329 Int) (v_ArrVal_4328 Int) (v_ArrVal_4333 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int) (v_ArrVal_4331 Int)) (let ((.cse0 (+ ensure_array_list_has_allocated_data_member_~list.offset 32))) (and (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_4328) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_4333)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_4329) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_4331)) |c_#memory_$Pointer$.offset|)))) (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1)))) is different from true [2022-11-18 18:43:48,215 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:43:48,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-11-18 18:43:48,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:48,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:48,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-18 18:43:48,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:48,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:48,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-18 18:43:48,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:48,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:48,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:48,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:48,470 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4338 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4338))) (exists ((v_ArrVal_4339 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4339)))) is different from true [2022-11-18 18:43:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 296 proven. 25 refuted. 3 times theorem prover too weak. 203 trivial. 2 not checked. [2022-11-18 18:43:49,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:49,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:49,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690773699] [2022-11-18 18:43:49,788 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:49,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526123572] [2022-11-18 18:43:49,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526123572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:49,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:43:49,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-18 18:43:49,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462069392] [2022-11-18 18:43:49,788 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:49,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 18:43:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:49,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 18:43:49,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=510, Unknown=11, NotChecked=144, Total=756 [2022-11-18 18:43:49,790 INFO L87 Difference]: Start difference. First operand 495 states and 709 transitions. Second operand has 27 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 13 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) [2022-11-18 18:43:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:52,859 INFO L93 Difference]: Finished difference Result 1124 states and 1671 transitions. [2022-11-18 18:43:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 18:43:52,860 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 13 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) Word has length 313 [2022-11-18 18:43:52,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:52,868 INFO L225 Difference]: With dead ends: 1124 [2022-11-18 18:43:52,868 INFO L226 Difference]: Without dead ends: 715 [2022-11-18 18:43:52,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 425 SyntacticMatches, 21 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=124, Invalid=737, Unknown=21, NotChecked=174, Total=1056 [2022-11-18 18:43:52,874 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 311 mSDsluCounter, 3360 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 9320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6229 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:52,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 3724 Invalid, 9320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2704 Invalid, 0 Unknown, 6229 Unchecked, 2.7s Time] [2022-11-18 18:43:52,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-11-18 18:43:52,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 495. [2022-11-18 18:43:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 330 states have (on average 1.1818181818181819) internal successors, (390), 334 states have internal predecessors, (390), 121 states have call successors, (121), 33 states have call predecessors, (121), 43 states have return successors, (195), 127 states have call predecessors, (195), 120 states have call successors, (195) [2022-11-18 18:43:52,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 706 transitions. [2022-11-18 18:43:52,958 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 706 transitions. Word has length 313 [2022-11-18 18:43:52,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:52,959 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 706 transitions. [2022-11-18 18:43:52,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 13 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) [2022-11-18 18:43:52,959 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 706 transitions. [2022-11-18 18:43:52,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-18 18:43:52,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:52,963 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:52,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:53,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 18:43:53,182 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:53,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:53,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2012200211, now seen corresponding path program 1 times [2022-11-18 18:43:53,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:53,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844914587] [2022-11-18 18:43:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:53,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:53,265 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:53,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609309398] [2022-11-18 18:43:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:53,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:53,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:53,267 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:53,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 18:43:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:54,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 3461 conjuncts, 191 conjunts are in the unsatisfiable core [2022-11-18 18:43:54,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:54,323 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 5 [2022-11-18 18:43:54,757 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ensure_array_list_has_allocated_data_member_#in~list.base_BEFORE_CALL_18| Int) (|v_ensure_array_list_has_allocated_data_member_#in~list.offset_BEFORE_CALL_18| Int)) (not (= (mod (select (select |c_#memory_int| |v_ensure_array_list_has_allocated_data_member_#in~list.base_BEFORE_CALL_18|) (+ 16 |v_ensure_array_list_has_allocated_data_member_#in~list.offset_BEFORE_CALL_18|)) 18446744073709551616) 0))) (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1)))) is different from true [2022-11-18 18:43:54,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 18:43:54,852 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 5 [2022-11-18 18:43:54,966 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 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 18:43:54,971 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) (not (= (mod (select (select |c_#memory_int| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ 16 |c_ensure_array_list_has_allocated_data_member_#in~list.offset|)) 18446744073709551616) 0))) is different from true [2022-11-18 18:43:55,006 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:43:55,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-11-18 18:44:05,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 53 [2022-11-18 18:44:08,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:08,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:08,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:08,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2022-11-18 18:44:12,673 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4596 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4596) |c_#memory_int|)) is different from true [2022-11-18 18:44:19,121 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4597 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4597)) |c_#memory_int|)) is different from true [2022-11-18 18:44:23,528 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4597 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4597)) |c_#memory_int|)) (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)))) is different from true [2022-11-18 18:44:34,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:44:34,690 INFO L321 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-11-18 18:44:34,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 1 [2022-11-18 18:44:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 273 proven. 19 refuted. 0 times theorem prover too weak. 228 trivial. 12 not checked. [2022-11-18 18:44:34,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:38,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:38,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844914587] [2022-11-18 18:44:38,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:38,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609309398] [2022-11-18 18:44:38,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609309398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:38,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:44:38,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2022-11-18 18:44:38,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622148886] [2022-11-18 18:44:38,499 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:38,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 18:44:38,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 18:44:38,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1873, Unknown=49, NotChecked=460, Total=2550 [2022-11-18 18:44:38,502 INFO L87 Difference]: Start difference. First operand 495 states and 706 transitions. Second operand has 44 states, 39 states have (on average 3.871794871794872) internal successors, (151), 38 states have internal predecessors, (151), 15 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (37), 13 states have call predecessors, (37), 15 states have call successors, (37) [2022-11-18 18:45:20,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:45:20,272 INFO L93 Difference]: Finished difference Result 1184 states and 1764 transitions. [2022-11-18 18:45:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-18 18:45:20,273 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 3.871794871794872) internal successors, (151), 38 states have internal predecessors, (151), 15 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (37), 13 states have call predecessors, (37), 15 states have call successors, (37) Word has length 310 [2022-11-18 18:45:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:45:20,279 INFO L225 Difference]: With dead ends: 1184 [2022-11-18 18:45:20,279 INFO L226 Difference]: Without dead ends: 775 [2022-11-18 18:45:20,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 400 SyntacticMatches, 21 SemanticMatches, 72 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 79.9s TimeCoverageRelationStatistics Valid=329, Invalid=4286, Unknown=97, NotChecked=690, Total=5402 [2022-11-18 18:45:20,282 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 438 mSDsluCounter, 3726 mSDsCounter, 0 mSdLazyCounter, 3425 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 4106 SdHoareTripleChecker+Invalid, 14112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 3425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10296 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:45:20,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 4106 Invalid, 14112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 3425 Invalid, 0 Unknown, 10296 Unchecked, 3.1s Time] [2022-11-18 18:45:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-11-18 18:45:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 557. [2022-11-18 18:45:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 375 states have (on average 1.1786666666666668) internal successors, (442), 382 states have internal predecessors, (442), 128 states have call successors, (128), 38 states have call predecessors, (128), 53 states have return successors, (220), 136 states have call predecessors, (220), 127 states have call successors, (220) [2022-11-18 18:45:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 790 transitions. [2022-11-18 18:45:20,345 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 790 transitions. Word has length 310 [2022-11-18 18:45:20,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:45:20,346 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 790 transitions. [2022-11-18 18:45:20,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 3.871794871794872) internal successors, (151), 38 states have internal predecessors, (151), 15 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (37), 13 states have call predecessors, (37), 15 states have call successors, (37) [2022-11-18 18:45:20,346 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 790 transitions. [2022-11-18 18:45:20,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-18 18:45:20,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:45:20,349 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, 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, 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] [2022-11-18 18:45:20,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 18:45:20,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 18:45:20,562 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:45:20,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:20,563 INFO L85 PathProgramCache]: Analyzing trace with hash -557336006, now seen corresponding path program 1 times [2022-11-18 18:45:20,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:20,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675807655] [2022-11-18 18:45:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:20,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:20,634 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:45:20,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337310295] [2022-11-18 18:45:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:20,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:45:20,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:45:20,636 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:45:20,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 18:45:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:21,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 3422 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-18 18:45:21,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:45:21,651 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 5 [2022-11-18 18:45:22,195 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:45:22,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:45:22,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:45:22,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:45:22,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:45:23,119 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4833 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4833))) is different from true [2022-11-18 18:45:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 271 proven. 38 refuted. 3 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-18 18:45:23,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:45:24,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:24,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675807655] [2022-11-18 18:45:24,068 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:45:24,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337310295] [2022-11-18 18:45:24,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337310295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:45:24,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:45:24,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-11-18 18:45:24,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381391416] [2022-11-18 18:45:24,069 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:45:24,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:45:24,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:24,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:45:24,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=555, Unknown=10, NotChecked=48, Total=702 [2022-11-18 18:45:24,071 INFO L87 Difference]: Start difference. First operand 557 states and 790 transitions. Second operand has 26 states, 24 states have (on average 6.125) internal successors, (147), 22 states have internal predecessors, (147), 13 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (36), 10 states have call predecessors, (36), 13 states have call successors, (36) [2022-11-18 18:45:26,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:45:26,807 INFO L93 Difference]: Finished difference Result 1257 states and 1851 transitions. [2022-11-18 18:45:26,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:45:26,808 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 6.125) internal successors, (147), 22 states have internal predecessors, (147), 13 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (36), 10 states have call predecessors, (36), 13 states have call successors, (36) Word has length 304 [2022-11-18 18:45:26,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:45:26,814 INFO L225 Difference]: With dead ends: 1257 [2022-11-18 18:45:26,814 INFO L226 Difference]: Without dead ends: 817 [2022-11-18 18:45:26,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 418 SyntacticMatches, 20 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=139, Invalid=900, Unknown=21, NotChecked=62, Total=1122 [2022-11-18 18:45:26,817 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 376 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 5890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3226 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:45:26,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 2689 Invalid, 5890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 2304 Invalid, 0 Unknown, 3226 Unchecked, 2.2s Time] [2022-11-18 18:45:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-18 18:45:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 594. [2022-11-18 18:45:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 404 states have (on average 1.183168316831683) internal successors, (478), 411 states have internal predecessors, (478), 132 states have call successors, (132), 41 states have call predecessors, (132), 57 states have return successors, (236), 141 states have call predecessors, (236), 131 states have call successors, (236) [2022-11-18 18:45:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 846 transitions. [2022-11-18 18:45:26,888 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 846 transitions. Word has length 304 [2022-11-18 18:45:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:45:26,889 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 846 transitions. [2022-11-18 18:45:26,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 6.125) internal successors, (147), 22 states have internal predecessors, (147), 13 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (36), 10 states have call predecessors, (36), 13 states have call successors, (36) [2022-11-18 18:45:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 846 transitions. [2022-11-18 18:45:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-18 18:45:26,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:45:26,893 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:26,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 18:45:27,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 18:45:27,106 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:45:27,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1539881523, now seen corresponding path program 1 times [2022-11-18 18:45:27,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:27,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936051521] [2022-11-18 18:45:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:27,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:27,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:45:27,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45030205] [2022-11-18 18:45:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:27,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:45:27,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:45:27,221 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:45:27,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 18:45:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:28,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 3464 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 18:45:28,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:45:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 281 proven. 11 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-18 18:45:28,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:45:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 70 proven. 45 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2022-11-18 18:45:29,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:29,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936051521] [2022-11-18 18:45:29,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:45:29,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45030205] [2022-11-18 18:45:29,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45030205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:45:29,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:45:29,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 30 [2022-11-18 18:45:29,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89144018] [2022-11-18 18:45:29,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:45:29,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 18:45:29,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:29,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 18:45:29,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2022-11-18 18:45:29,690 INFO L87 Difference]: Start difference. First operand 594 states and 846 transitions. Second operand has 30 states, 26 states have (on average 6.769230769230769) internal successors, (176), 21 states have internal predecessors, (176), 8 states have call successors, (47), 3 states have call predecessors, (47), 10 states have return successors, (49), 12 states have call predecessors, (49), 7 states have call successors, (49) [2022-11-18 18:45:30,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:45:30,683 INFO L93 Difference]: Finished difference Result 1073 states and 1554 transitions. [2022-11-18 18:45:30,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:45:30,683 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 6.769230769230769) internal successors, (176), 21 states have internal predecessors, (176), 8 states have call successors, (47), 3 states have call predecessors, (47), 10 states have return successors, (49), 12 states have call predecessors, (49), 7 states have call successors, (49) Word has length 320 [2022-11-18 18:45:30,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:45:30,689 INFO L225 Difference]: With dead ends: 1073 [2022-11-18 18:45:30,689 INFO L226 Difference]: Without dead ends: 654 [2022-11-18 18:45:30,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 606 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 18:45:30,692 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 23 mSDsluCounter, 11092 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 11547 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:45:30,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 11547 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 18:45:30,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-11-18 18:45:30,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 628. [2022-11-18 18:45:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 434 states have (on average 1.1820276497695852) internal successors, (513), 441 states have internal predecessors, (513), 134 states have call successors, (134), 41 states have call predecessors, (134), 59 states have return successors, (254), 145 states have call predecessors, (254), 133 states have call successors, (254) [2022-11-18 18:45:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 901 transitions. [2022-11-18 18:45:30,801 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 901 transitions. Word has length 320 [2022-11-18 18:45:30,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:45:30,802 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 901 transitions. [2022-11-18 18:45:30,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 6.769230769230769) internal successors, (176), 21 states have internal predecessors, (176), 8 states have call successors, (47), 3 states have call predecessors, (47), 10 states have return successors, (49), 12 states have call predecessors, (49), 7 states have call successors, (49) [2022-11-18 18:45:30,803 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 901 transitions. [2022-11-18 18:45:30,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-18 18:45:30,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:45:30,807 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, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:30,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 18:45:31,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 18:45:31,020 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:45:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1157932294, now seen corresponding path program 2 times [2022-11-18 18:45:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:31,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036568453] [2022-11-18 18:45:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:31,102 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:45:31,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207137262] [2022-11-18 18:45:31,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:45:31,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:45:31,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:45:31,103 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:45:31,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 18:45:32,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:45:32,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:45:32,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 3465 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 18:45:32,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:45:32,229 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 21 treesize of output 9 [2022-11-18 18:45:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-18 18:45:32,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:45:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:32,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036568453] [2022-11-18 18:45:32,259 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:45:32,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207137262] [2022-11-18 18:45:32,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207137262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:32,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:32,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:45:32,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14711202] [2022-11-18 18:45:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:32,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:45:32,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:45:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:45:32,262 INFO L87 Difference]: Start difference. First operand 628 states and 901 transitions. Second operand has 9 states, 8 states have (on average 16.75) internal successors, (134), 9 states have internal predecessors, (134), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-18 18:45:32,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:45:32,831 INFO L93 Difference]: Finished difference Result 1094 states and 1589 transitions. [2022-11-18 18:45:32,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:45:32,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 16.75) internal successors, (134), 9 states have internal predecessors, (134), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 316 [2022-11-18 18:45:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:45:32,837 INFO L225 Difference]: With dead ends: 1094 [2022-11-18 18:45:32,837 INFO L226 Difference]: Without dead ends: 638 [2022-11-18 18:45:32,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:45:32,839 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 8 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:45:32,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2703 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:45:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-18 18:45:32,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 630. [2022-11-18 18:45:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 436 states have (on average 1.1811926605504588) internal successors, (515), 443 states have internal predecessors, (515), 134 states have call successors, (134), 41 states have call predecessors, (134), 59 states have return successors, (254), 145 states have call predecessors, (254), 133 states have call successors, (254) [2022-11-18 18:45:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 903 transitions. [2022-11-18 18:45:32,907 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 903 transitions. Word has length 316 [2022-11-18 18:45:32,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:45:32,908 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 903 transitions. [2022-11-18 18:45:32,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 16.75) internal successors, (134), 9 states have internal predecessors, (134), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-18 18:45:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 903 transitions. [2022-11-18 18:45:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-18 18:45:32,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:45:32,912 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:32,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 18:45:33,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:45:33,125 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:45:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:33,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1517076533, now seen corresponding path program 1 times [2022-11-18 18:45:33,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:33,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103877439] [2022-11-18 18:45:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:33,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:33,199 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:45:33,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179964117] [2022-11-18 18:45:33,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:33,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:45:33,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:45:33,201 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:45:33,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 18:45:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:34,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 3445 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-18 18:45:34,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:45:34,394 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 5 [2022-11-18 18:45:34,906 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:45:39,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:45:39,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:45:39,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:45:39,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:45:43,371 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5466 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5466))) is different from true [2022-11-18 18:45:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 267 proven. 36 refuted. 3 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-18 18:45:43,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:45:44,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:44,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103877439] [2022-11-18 18:45:44,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:45:44,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179964117] [2022-11-18 18:45:44,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179964117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:45:44,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:45:44,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-11-18 18:45:44,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143145645] [2022-11-18 18:45:44,290 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:45:44,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 18:45:44,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:44,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 18:45:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=508, Unknown=14, NotChecked=46, Total=650 [2022-11-18 18:45:44,292 INFO L87 Difference]: Start difference. First operand 630 states and 903 transitions. Second operand has 25 states, 23 states have (on average 6.434782608695652) internal successors, (148), 20 states have internal predecessors, (148), 12 states have call successors, (40), 7 states have call predecessors, (40), 9 states have return successors, (37), 9 states have call predecessors, (37), 12 states have call successors, (37) [2022-11-18 18:45:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:45:50,648 INFO L93 Difference]: Finished difference Result 1355 states and 2021 transitions. [2022-11-18 18:45:50,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 18:45:50,648 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 6.434782608695652) internal successors, (148), 20 states have internal predecessors, (148), 12 states have call successors, (40), 7 states have call predecessors, (40), 9 states have return successors, (37), 9 states have call predecessors, (37), 12 states have call successors, (37) Word has length 307 [2022-11-18 18:45:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:45:50,653 INFO L225 Difference]: With dead ends: 1355 [2022-11-18 18:45:50,653 INFO L226 Difference]: Without dead ends: 852 [2022-11-18 18:45:50,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 419 SyntacticMatches, 22 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=140, Invalid=893, Unknown=27, NotChecked=62, Total=1122 [2022-11-18 18:45:50,656 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 258 mSDsluCounter, 3319 mSDsCounter, 0 mSdLazyCounter, 3801 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 3690 SdHoareTripleChecker+Invalid, 7491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 3801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3496 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:45:50,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 3690 Invalid, 7491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 3801 Invalid, 0 Unknown, 3496 Unchecked, 3.6s Time] [2022-11-18 18:45:50,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-11-18 18:45:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 664. [2022-11-18 18:45:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 466 states have (on average 1.1802575107296138) internal successors, (550), 472 states have internal predecessors, (550), 136 states have call successors, (136), 42 states have call predecessors, (136), 61 states have return successors, (264), 149 states have call predecessors, (264), 135 states have call successors, (264) [2022-11-18 18:45:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 950 transitions. [2022-11-18 18:45:50,738 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 950 transitions. Word has length 307 [2022-11-18 18:45:50,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:45:50,738 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 950 transitions. [2022-11-18 18:45:50,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 6.434782608695652) internal successors, (148), 20 states have internal predecessors, (148), 12 states have call successors, (40), 7 states have call predecessors, (40), 9 states have return successors, (37), 9 states have call predecessors, (37), 12 states have call successors, (37) [2022-11-18 18:45:50,739 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 950 transitions. [2022-11-18 18:45:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-11-18 18:45:50,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:45:50,743 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, 4, 4, 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, 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] [2022-11-18 18:45:50,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 18:45:50,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:45:50,957 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:45:50,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:50,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1438839031, now seen corresponding path program 1 times [2022-11-18 18:45:50,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:50,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840392266] [2022-11-18 18:45:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:50,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:51,030 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:45:51,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322960246] [2022-11-18 18:45:51,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:51,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:45:51,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:45:51,032 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:45:51,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 18:45:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:52,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 3528 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-18 18:45:52,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:45:52,187 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 5 [2022-11-18 18:45:52,463 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (exists ((v_ArrVal_5693 Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_5693))) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-11-18 18:45:52,475 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_5693 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_5693)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-11-18 18:45:52,483 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 5 [2022-11-18 18:45:52,521 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:45:52,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 18 [2022-11-18 18:45:52,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:45:52,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-18 18:45:56,814 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 0 case distinctions, treesize of input 45 treesize of output 32 [2022-11-18 18:45:56,913 INFO L321 Elim1Store]: treesize reduction 16, result has 65.2 percent of original size [2022-11-18 18:45:56,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 51 [2022-11-18 18:45:58,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:45:58,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-18 18:45:59,380 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 27 treesize of output 19 [2022-11-18 18:45:59,384 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 14 treesize of output 12 [2022-11-18 18:45:59,510 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 5 treesize of output 3 [2022-11-18 18:45:59,572 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5701 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5701))) is different from true [2022-11-18 18:46:05,867 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 5 treesize of output 3 [2022-11-18 18:46:08,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:46:08,302 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 5 treesize of output 3 [2022-11-18 18:46:12,537 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 49 treesize of output 37 [2022-11-18 18:46:12,542 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 18 treesize of output 16 [2022-11-18 18:46:12,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:46:12,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 18:46:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 278 proven. 20 refuted. 0 times theorem prover too weak. 236 trivial. 11 not checked. [2022-11-18 18:46:12,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:46:15,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:15,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840392266] [2022-11-18 18:46:15,106 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:46:15,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322960246] [2022-11-18 18:46:15,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322960246] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:46:15,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:46:15,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-18 18:46:15,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762772118] [2022-11-18 18:46:15,107 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:46:15,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:46:15,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:46:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=774, Unknown=16, NotChecked=174, Total=1056 [2022-11-18 18:46:15,108 INFO L87 Difference]: Start difference. First operand 664 states and 950 transitions. Second operand has 32 states, 29 states have (on average 5.551724137931035) internal successors, (161), 28 states have internal predecessors, (161), 16 states have call successors, (43), 8 states have call predecessors, (43), 14 states have return successors, (40), 14 states have call predecessors, (40), 16 states have call successors, (40) [2022-11-18 18:46:31,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:46:31,783 INFO L93 Difference]: Finished difference Result 1388 states and 2113 transitions. [2022-11-18 18:46:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:46:31,784 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 5.551724137931035) internal successors, (161), 28 states have internal predecessors, (161), 16 states have call successors, (43), 8 states have call predecessors, (43), 14 states have return successors, (40), 14 states have call predecessors, (40), 16 states have call successors, (40) Word has length 331 [2022-11-18 18:46:31,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:46:31,791 INFO L225 Difference]: With dead ends: 1388 [2022-11-18 18:46:31,792 INFO L226 Difference]: Without dead ends: 869 [2022-11-18 18:46:31,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 443 SyntacticMatches, 19 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=186, Invalid=1861, Unknown=35, NotChecked=270, Total=2352 [2022-11-18 18:46:31,796 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 400 mSDsluCounter, 4142 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 8854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4552 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:46:31,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 4546 Invalid, 8854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 3925 Invalid, 0 Unknown, 4552 Unchecked, 3.8s Time] [2022-11-18 18:46:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-18 18:46:31,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 700. [2022-11-18 18:46:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 494 states have (on average 1.1761133603238867) internal successors, (581), 502 states have internal predecessors, (581), 140 states have call successors, (140), 43 states have call predecessors, (140), 65 states have return successors, (312), 154 states have call predecessors, (312), 139 states have call successors, (312) [2022-11-18 18:46:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1033 transitions. [2022-11-18 18:46:31,889 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1033 transitions. Word has length 331 [2022-11-18 18:46:31,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:46:31,889 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1033 transitions. [2022-11-18 18:46:31,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 5.551724137931035) internal successors, (161), 28 states have internal predecessors, (161), 16 states have call successors, (43), 8 states have call predecessors, (43), 14 states have return successors, (40), 14 states have call predecessors, (40), 16 states have call successors, (40) [2022-11-18 18:46:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1033 transitions. [2022-11-18 18:46:31,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-18 18:46:31,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:46:31,895 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, 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, 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] [2022-11-18 18:46:31,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 18:46:32,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:32,109 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:46:32,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:32,110 INFO L85 PathProgramCache]: Analyzing trace with hash -300534638, now seen corresponding path program 1 times [2022-11-18 18:46:32,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:32,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368347742] [2022-11-18 18:46:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:32,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:32,213 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:46:32,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729941678] [2022-11-18 18:46:32,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:32,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:32,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:32,215 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:32,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 18:46:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:33,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 3536 conjuncts, 162 conjunts are in the unsatisfiable core [2022-11-18 18:46:33,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:33,339 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 5 [2022-11-18 18:46:33,787 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 5 treesize of output 3 [2022-11-18 18:46:33,813 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (exists ((v_ArrVal_5960 Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_5960))) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-11-18 18:46:33,826 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_5960 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_5960)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-11-18 18:46:33,834 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 5 [2022-11-18 18:46:33,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:46:33,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:46:36,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:46:36,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 18:46:36,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-18 18:46:48,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-18 18:47:02,748 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 0 case distinctions, treesize of input 45 treesize of output 32 [2022-11-18 18:47:02,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 18:47:02,857 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-11-18 18:47:02,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-11-18 18:47:06,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:47:06,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 18:47:06,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:47:06,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-11-18 18:47:11,282 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5974 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5974) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5975 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5975))))) is different from true [2022-11-18 18:47:23,883 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5977 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5977)))) (exists ((v_ArrVal_5979 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5979)))) is different from true [2022-11-18 18:47:57,597 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:47:57,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 18:47:57,623 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 18:47:57,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 18:47:57,628 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 5 treesize of output 3 [2022-11-18 18:48:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 279 proven. 18 refuted. 0 times theorem prover too weak. 231 trivial. 11 not checked. [2022-11-18 18:48:02,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:07,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:07,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368347742] [2022-11-18 18:48:07,322 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:07,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729941678] [2022-11-18 18:48:07,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729941678] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:48:07,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:48:07,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2022-11-18 18:48:07,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166640279] [2022-11-18 18:48:07,322 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:07,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 18:48:07,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:07,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 18:48:07,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1331, Unknown=44, NotChecked=308, Total=1806 [2022-11-18 18:48:07,324 INFO L87 Difference]: Start difference. First operand 700 states and 1033 transitions. Second operand has 42 states, 37 states have (on average 4.27027027027027) internal successors, (158), 37 states have internal predecessors, (158), 16 states have call successors, (42), 10 states have call predecessors, (42), 15 states have return successors, (39), 15 states have call predecessors, (39), 16 states have call successors, (39) [2022-11-18 18:48:40,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:40,340 INFO L93 Difference]: Finished difference Result 1380 states and 2114 transitions. [2022-11-18 18:48:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 18:48:40,341 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 4.27027027027027) internal successors, (158), 37 states have internal predecessors, (158), 16 states have call successors, (42), 10 states have call predecessors, (42), 15 states have return successors, (39), 15 states have call predecessors, (39), 16 states have call successors, (39) Word has length 324 [2022-11-18 18:48:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:40,346 INFO L225 Difference]: With dead ends: 1380 [2022-11-18 18:48:40,346 INFO L226 Difference]: Without dead ends: 835 [2022-11-18 18:48:40,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 419 SyntacticMatches, 21 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 120.6s TimeCoverageRelationStatistics Valid=234, Invalid=2892, Unknown=82, NotChecked=452, Total=3660 [2022-11-18 18:48:40,352 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 397 mSDsluCounter, 3712 mSDsCounter, 0 mSdLazyCounter, 2937 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 4073 SdHoareTripleChecker+Invalid, 10341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 2937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6898 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:40,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 4073 Invalid, 10341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 2937 Invalid, 0 Unknown, 6898 Unchecked, 3.2s Time] [2022-11-18 18:48:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-18 18:48:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 741. [2022-11-18 18:48:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 525 states have (on average 1.1733333333333333) internal successors, (616), 534 states have internal predecessors, (616), 146 states have call successors, (146), 45 states have call predecessors, (146), 69 states have return successors, (362), 161 states have call predecessors, (362), 145 states have call successors, (362) [2022-11-18 18:48:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1124 transitions. [2022-11-18 18:48:40,487 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1124 transitions. Word has length 324 [2022-11-18 18:48:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:40,488 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1124 transitions. [2022-11-18 18:48:40,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 4.27027027027027) internal successors, (158), 37 states have internal predecessors, (158), 16 states have call successors, (42), 10 states have call predecessors, (42), 15 states have return successors, (39), 15 states have call predecessors, (39), 16 states have call successors, (39) [2022-11-18 18:48:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1124 transitions. [2022-11-18 18:48:40,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-11-18 18:48:40,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:40,496 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, 4, 4, 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, 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] [2022-11-18 18:48:40,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:40,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-18 18:48:40,716 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:40,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:40,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2061945136, now seen corresponding path program 1 times [2022-11-18 18:48:40,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:40,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047287789] [2022-11-18 18:48:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:40,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:40,784 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:40,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283103682] [2022-11-18 18:48:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:40,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:40,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:40,785 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:40,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 18:48:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:41,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 3541 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-18 18:48:41,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:41,962 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 5 [2022-11-18 18:48:42,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-18 18:48:42,312 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:48:42,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:48:42,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:48:42,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-18 18:48:48,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-18 18:48:54,719 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 0 case distinctions, treesize of input 45 treesize of output 32 [2022-11-18 18:48:54,804 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-11-18 18:48:54,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-11-18 18:48:56,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:48:56,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-11-18 18:48:57,820 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6243 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6243))) is different from true [2022-11-18 18:49:04,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:49:04,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:49:04,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-11-18 18:49:04,165 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:49:04,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-11-18 18:50:07,021 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 24 treesize of output 12 [2022-11-18 18:50:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 292 proven. 46 refuted. 0 times theorem prover too weak. 204 trivial. 3 not checked. [2022-11-18 18:50:07,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:10,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:10,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047287789] [2022-11-18 18:50:10,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:10,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283103682] [2022-11-18 18:50:10,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283103682] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:10,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:50:10,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-11-18 18:50:10,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579597784] [2022-11-18 18:50:10,893 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:10,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 18:50:10,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 18:50:10,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=503, Unknown=21, NotChecked=46, Total=650 [2022-11-18 18:50:10,895 INFO L87 Difference]: Start difference. First operand 741 states and 1124 transitions. Second operand has 24 states, 22 states have (on average 7.590909090909091) internal successors, (167), 22 states have internal predecessors, (167), 14 states have call successors, (44), 8 states have call predecessors, (44), 11 states have return successors, (41), 12 states have call predecessors, (41), 14 states have call successors, (41) [2022-11-18 18:50:30,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:30,745 INFO L93 Difference]: Finished difference Result 1495 states and 2331 transitions. [2022-11-18 18:50:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:50:30,746 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 7.590909090909091) internal successors, (167), 22 states have internal predecessors, (167), 14 states have call successors, (44), 8 states have call predecessors, (44), 11 states have return successors, (41), 12 states have call predecessors, (41), 14 states have call successors, (41) Word has length 336 [2022-11-18 18:50:30,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:30,755 INFO L225 Difference]: With dead ends: 1495 [2022-11-18 18:50:30,756 INFO L226 Difference]: Without dead ends: 962 [2022-11-18 18:50:30,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 444 SyntacticMatches, 28 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 104.2s TimeCoverageRelationStatistics Valid=118, Invalid=841, Unknown=37, NotChecked=60, Total=1056 [2022-11-18 18:50:30,761 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 222 mSDsluCounter, 4831 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 5258 SdHoareTripleChecker+Invalid, 7112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4096 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:30,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 5258 Invalid, 7112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2835 Invalid, 0 Unknown, 4096 Unchecked, 3.2s Time] [2022-11-18 18:50:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2022-11-18 18:50:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 776. [2022-11-18 18:50:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 555 states have (on average 1.1711711711711712) internal successors, (650), 566 states have internal predecessors, (650), 149 states have call successors, (149), 45 states have call predecessors, (149), 71 states have return successors, (404), 164 states have call predecessors, (404), 148 states have call successors, (404) [2022-11-18 18:50:30,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1203 transitions. [2022-11-18 18:50:30,939 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1203 transitions. Word has length 336 [2022-11-18 18:50:30,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:30,939 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1203 transitions. [2022-11-18 18:50:30,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 7.590909090909091) internal successors, (167), 22 states have internal predecessors, (167), 14 states have call successors, (44), 8 states have call predecessors, (44), 11 states have return successors, (41), 12 states have call predecessors, (41), 14 states have call successors, (41) [2022-11-18 18:50:30,939 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1203 transitions. [2022-11-18 18:50:30,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-18 18:50:30,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:30,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:30,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:31,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 18:50:31,163 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:31,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:31,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1917573871, now seen corresponding path program 1 times [2022-11-18 18:50:31,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:31,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586925631] [2022-11-18 18:50:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:31,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:31,242 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:31,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446988585] [2022-11-18 18:50:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:31,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:31,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:31,244 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:31,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 18:50:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:32,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 3489 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-18 18:50:32,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:32,428 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 5 [2022-11-18 18:50:33,102 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:50:33,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-18 18:50:33,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:50:33,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:50:33,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-18 18:50:33,557 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_6484 Int)) (and (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_6484)))) (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int) (v_ArrVal_6487 Int) (v_ArrVal_6485 Int)) (and (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_6485) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_6487)) |c_#memory_int|) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset)))) is different from true [2022-11-18 18:50:33,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:50:33,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:50:33,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-18 18:50:33,616 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:50:33,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:50:33,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:50:33,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:50:33,904 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6491 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6491) |c_#memory_int|)) is different from true [2022-11-18 18:50:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 265 proven. 30 refuted. 3 times theorem prover too weak. 225 trivial. 2 not checked. [2022-11-18 18:50:34,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:35,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:35,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586925631] [2022-11-18 18:50:35,059 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:35,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446988585] [2022-11-18 18:50:35,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446988585] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:35,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:50:35,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-11-18 18:50:35,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016878738] [2022-11-18 18:50:35,060 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:35,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:50:35,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:35,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:50:35,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=601, Unknown=18, NotChecked=102, Total=812 [2022-11-18 18:50:35,062 INFO L87 Difference]: Start difference. First operand 776 states and 1203 transitions. Second operand has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 23 states have internal predecessors, (154), 14 states have call successors, (42), 7 states have call predecessors, (42), 10 states have return successors, (39), 11 states have call predecessors, (39), 14 states have call successors, (39) [2022-11-18 18:50:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:38,991 INFO L93 Difference]: Finished difference Result 1556 states and 2408 transitions. [2022-11-18 18:50:38,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 18:50:38,992 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 23 states have internal predecessors, (154), 14 states have call successors, (42), 7 states have call predecessors, (42), 10 states have return successors, (39), 11 states have call predecessors, (39), 14 states have call successors, (39) Word has length 316 [2022-11-18 18:50:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:38,999 INFO L225 Difference]: With dead ends: 1556 [2022-11-18 18:50:38,999 INFO L226 Difference]: Without dead ends: 944 [2022-11-18 18:50:39,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 422 SyntacticMatches, 21 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=134, Invalid=963, Unknown=33, NotChecked=130, Total=1260 [2022-11-18 18:50:39,005 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 466 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 7650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4298 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:39,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 3091 Invalid, 7650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 2783 Invalid, 0 Unknown, 4298 Unchecked, 3.3s Time] [2022-11-18 18:50:39,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-18 18:50:39,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 767. [2022-11-18 18:50:39,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 549 states have (on average 1.1730418943533698) internal successors, (644), 560 states have internal predecessors, (644), 146 states have call successors, (146), 45 states have call predecessors, (146), 71 states have return successors, (370), 161 states have call predecessors, (370), 145 states have call successors, (370) [2022-11-18 18:50:39,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1160 transitions. [2022-11-18 18:50:39,218 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1160 transitions. Word has length 316 [2022-11-18 18:50:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:39,219 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 1160 transitions. [2022-11-18 18:50:39,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 23 states have internal predecessors, (154), 14 states have call successors, (42), 7 states have call predecessors, (42), 10 states have return successors, (39), 11 states have call predecessors, (39), 14 states have call successors, (39) [2022-11-18 18:50:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1160 transitions. [2022-11-18 18:50:39,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-18 18:50:39,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:39,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:39,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:39,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:39,448 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:39,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash 388327213, now seen corresponding path program 1 times [2022-11-18 18:50:39,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:39,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929963776] [2022-11-18 18:50:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:39,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:39,527 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:39,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174741770] [2022-11-18 18:50:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:39,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:39,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:39,528 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:39,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 18:50:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:40,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 3492 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-18 18:50:40,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:40,684 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 5 [2022-11-18 18:50:41,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 18:50:41,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-18 18:50:41,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-18 18:50:41,568 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:50:41,676 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:50:41,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:50:42,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:50:42,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:50:42,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:50:42,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:50:42,347 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6739 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6739) |c_#memory_int|)) is different from true [2022-11-18 18:50:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 265 proven. 32 refuted. 3 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-18 18:50:42,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:43,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:43,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929963776] [2022-11-18 18:50:43,475 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:43,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174741770] [2022-11-18 18:50:43,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174741770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:43,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:50:43,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-11-18 18:50:43,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347578585] [2022-11-18 18:50:43,476 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:43,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:50:43,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:43,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:50:43,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=649, Unknown=13, NotChecked=52, Total=812 [2022-11-18 18:50:43,478 INFO L87 Difference]: Start difference. First operand 767 states and 1160 transitions. Second operand has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 23 states have internal predecessors, (154), 14 states have call successors, (42), 8 states have call predecessors, (42), 10 states have return successors, (39), 10 states have call predecessors, (39), 14 states have call successors, (39) [2022-11-18 18:50:48,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:48,610 INFO L93 Difference]: Finished difference Result 1554 states and 2391 transitions. [2022-11-18 18:50:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 18:50:48,611 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 23 states have internal predecessors, (154), 14 states have call successors, (42), 8 states have call predecessors, (42), 10 states have return successors, (39), 10 states have call predecessors, (39), 14 states have call successors, (39) Word has length 316 [2022-11-18 18:50:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:48,618 INFO L225 Difference]: With dead ends: 1554 [2022-11-18 18:50:48,619 INFO L226 Difference]: Without dead ends: 942 [2022-11-18 18:50:48,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 425 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=142, Invalid=959, Unknown=25, NotChecked=64, Total=1190 [2022-11-18 18:50:48,623 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 257 mSDsluCounter, 3688 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 4057 SdHoareTripleChecker+Invalid, 7977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4192 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:48,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 4057 Invalid, 7977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 3594 Invalid, 0 Unknown, 4192 Unchecked, 4.5s Time] [2022-11-18 18:50:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-11-18 18:50:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 771. [2022-11-18 18:50:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 551 states have (on average 1.1724137931034482) internal successors, (646), 562 states have internal predecessors, (646), 148 states have call successors, (148), 45 states have call predecessors, (148), 71 states have return successors, (378), 163 states have call predecessors, (378), 147 states have call successors, (378) [2022-11-18 18:50:48,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1172 transitions. [2022-11-18 18:50:48,751 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1172 transitions. Word has length 316 [2022-11-18 18:50:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:48,752 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1172 transitions. [2022-11-18 18:50:48,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 23 states have internal predecessors, (154), 14 states have call successors, (42), 8 states have call predecessors, (42), 10 states have return successors, (39), 10 states have call predecessors, (39), 14 states have call successors, (39) [2022-11-18 18:50:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1172 transitions. [2022-11-18 18:50:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-18 18:50:48,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:48,760 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:48,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-11-18 18:50:48,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 18:50:48,976 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:48,976 INFO L85 PathProgramCache]: Analyzing trace with hash 768782067, now seen corresponding path program 1 times [2022-11-18 18:50:48,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:48,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105558872] [2022-11-18 18:50:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:48,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:49,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:49,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438409610] [2022-11-18 18:50:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:49,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:49,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:49,084 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:49,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 18:50:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:50,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 3499 conjuncts, 170 conjunts are in the unsatisfiable core [2022-11-18 18:50:50,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:50,999 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_6946 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6946) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_6945 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6945) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-18 18:50:51,019 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6946 (Array Int Int)) (v_ArrVal_6945 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6945) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6946) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 18:50:51,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:50:51,300 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6947 (Array Int Int)) (v_ArrVal_6949 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6947) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6949) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 18:50:52,596 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 165 treesize of output 147 [2022-11-18 18:50:52,605 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 255 treesize of output 237 [2022-11-18 18:50:52,615 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 106 treesize of output 90 [2022-11-18 18:50:52,620 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 48 treesize of output 40 [2022-11-18 18:50:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 298 proven. 17 refuted. 0 times theorem prover too weak. 195 trivial. 25 not checked. [2022-11-18 18:50:53,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-11-18 18:50:56,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:56,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105558872] [2022-11-18 18:50:56,701 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:56,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438409610] [2022-11-18 18:50:56,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438409610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:56,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:50:56,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 10] total 42 [2022-11-18 18:50:56,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857729015] [2022-11-18 18:50:56,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:56,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 18:50:56,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:56,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 18:50:56,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1240, Unknown=144, NotChecked=228, Total=1722 [2022-11-18 18:50:56,704 INFO L87 Difference]: Start difference. First operand 771 states and 1172 transitions. Second operand has 42 states, 38 states have (on average 5.921052631578948) internal successors, (225), 36 states have internal predecessors, (225), 17 states have call successors, (72), 6 states have call predecessors, (72), 11 states have return successors, (68), 13 states have call predecessors, (68), 14 states have call successors, (68) [2022-11-18 18:50:57,914 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6947 (Array Int Int)) (v_ArrVal_6949 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6947) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6949) |c_#memory_$Pointer$.base|))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_6946 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6946) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_6945 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6945) |c_#memory_$Pointer$.base|))))) is different from true [2022-11-18 18:51:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:51:04,086 INFO L93 Difference]: Finished difference Result 1503 states and 2332 transitions. [2022-11-18 18:51:04,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 18:51:04,087 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 5.921052631578948) internal successors, (225), 36 states have internal predecessors, (225), 17 states have call successors, (72), 6 states have call predecessors, (72), 11 states have return successors, (68), 13 states have call predecessors, (68), 14 states have call successors, (68) Word has length 330 [2022-11-18 18:51:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:51:04,093 INFO L225 Difference]: With dead ends: 1503 [2022-11-18 18:51:04,094 INFO L226 Difference]: Without dead ends: 948 [2022-11-18 18:51:04,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 620 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=290, Invalid=3338, Unknown=294, NotChecked=500, Total=4422 [2022-11-18 18:51:04,097 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 308 mSDsluCounter, 5763 mSDsCounter, 0 mSdLazyCounter, 4979 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 6137 SdHoareTripleChecker+Invalid, 10453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 4979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5296 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:51:04,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 6137 Invalid, 10453 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [178 Valid, 4979 Invalid, 0 Unknown, 5296 Unchecked, 5.4s Time] [2022-11-18 18:51:04,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2022-11-18 18:51:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 771. [2022-11-18 18:51:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 551 states have (on average 1.1705989110707804) internal successors, (645), 562 states have internal predecessors, (645), 148 states have call successors, (148), 45 states have call predecessors, (148), 71 states have return successors, (378), 163 states have call predecessors, (378), 147 states have call successors, (378) [2022-11-18 18:51:04,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1171 transitions. [2022-11-18 18:51:04,229 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1171 transitions. Word has length 330 [2022-11-18 18:51:04,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:51:04,229 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1171 transitions. [2022-11-18 18:51:04,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 5.921052631578948) internal successors, (225), 36 states have internal predecessors, (225), 17 states have call successors, (72), 6 states have call predecessors, (72), 11 states have return successors, (68), 13 states have call predecessors, (68), 14 states have call successors, (68) [2022-11-18 18:51:04,230 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1171 transitions. [2022-11-18 18:51:04,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-18 18:51:04,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:51:04,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:51:04,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 18:51:04,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 18:51:04,451 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:51:04,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2079189199, now seen corresponding path program 1 times [2022-11-18 18:51:04,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:04,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538392804] [2022-11-18 18:51:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:04,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:04,525 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:51:04,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006592463] [2022-11-18 18:51:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:04,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:51:04,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:51:04,527 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:51:04,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_798a2e24-7d13-40e1-a437-67d2e4c06f4a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-18 18:51:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:05,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 3494 conjuncts, 249 conjunts are in the unsatisfiable core [2022-11-18 18:51:05,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:51:06,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:51:06,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:51:06,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:51:06,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:51:06,525 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 32 |c_ensure_array_list_has_allocated_data_member_#in~list.offset|))) (and (exists ((v_ArrVal_7273 Int) (|v_ensure_array_list_has_allocated_data_member_#t~ret537.base_18| Int)) (and (not (= |v_ensure_array_list_has_allocated_data_member_#t~ret537.base_18| 0)) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 |v_ensure_array_list_has_allocated_data_member_#t~ret537.base_18|) |c_ensure_array_list_has_allocated_data_member_#in~list.offset| v_ArrVal_7273)) |c_#memory_$Pointer$.base|))) (exists ((v_ArrVal_7275 Int) (v_ArrVal_7269 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_7269) |c_ensure_array_list_has_allocated_data_member_#in~list.offset| v_ArrVal_7275)))))) is different from true [2022-11-18 18:51:06,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:51:06,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:51:06,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-18 18:51:06,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:51:06,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:51:06,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-18 18:51:06,913 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 9 treesize of output 3 [2022-11-18 18:51:16,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:51:16,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:51:16,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-18 18:51:16,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:51:16,650 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-11-18 18:51:18,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:51:18,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:51:18,613 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:51:18,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2022-11-18 18:51:20,909 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7281 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7281)))) is different from true [2022-11-18 18:51:34,243 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7285 Int) (v_ArrVal_7283 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7285))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7283))))) is different from true [2022-11-18 18:51:46,278 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 18:51:46,278 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 49 treesize of output 58 [2022-11-18 18:52:04,885 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 11 treesize of output 5 [2022-11-18 18:52:24,782 INFO L321 Elim1Store]: treesize reduction 220, result has 39.6 percent of original size [2022-11-18 18:52:24,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 174 treesize of output 382 [2022-11-18 18:52:26,021 INFO L321 Elim1Store]: treesize reduction 207, result has 0.5 percent of original size [2022-11-18 18:52:26,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 70 treesize of output 120 [2022-11-18 18:52:26,748 INFO L321 Elim1Store]: treesize reduction 384, result has 8.8 percent of original size [2022-11-18 18:52:26,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 11 case distinctions, treesize of input 79 treesize of output 173 [2022-11-18 18:52:27,177 INFO L321 Elim1Store]: treesize reduction 207, result has 0.5 percent of original size [2022-11-18 18:52:27,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 70 treesize of output 120 [2022-11-18 18:52:28,063 INFO L321 Elim1Store]: treesize reduction 384, result has 8.8 percent of original size [2022-11-18 18:52:28,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 11 case distinctions, treesize of input 79 treesize of output 173 [2022-11-18 18:52:28,579 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 18:52:28,594 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 18:52:28,603 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 18:52:28,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:52:28,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:52:28,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:52:28,761 INFO L217 Elim1Store]: Index analysis took 136 ms [2022-11-18 18:52:28,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:52:28,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:52:28,800 INFO L321 Elim1Store]: treesize reduction 135, result has 0.7 percent of original size [2022-11-18 18:52:28,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 120 [2022-11-18 18:52:29,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:52:29,189 INFO L321 Elim1Store]: treesize reduction 162, result has 0.6 percent of original size [2022-11-18 18:52:29,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 70 treesize of output 120 [2022-11-18 18:52:29,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:52:29,405 INFO L217 Elim1Store]: Index analysis took 167 ms [2022-11-18 18:52:29,464 INFO L321 Elim1Store]: treesize reduction 195, result has 0.5 percent of original size [2022-11-18 18:52:29,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 70 treesize of output 120 [2022-11-18 18:52:47,376 INFO L321 Elim1Store]: treesize reduction 419, result has 6.7 percent of original size [2022-11-18 18:52:47,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 108 treesize of output 99 [2022-11-18 18:52:47,389 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 13 treesize of output 9 [2022-11-18 18:52:47,403 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 13 treesize of output 9 [2022-11-18 18:52:47,423 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 13 treesize of output 9 [2022-11-18 18:52:48,515 INFO L321 Elim1Store]: treesize reduction 258, result has 6.9 percent of original size [2022-11-18 18:52:48,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 5069 treesize of output 3558 [2022-11-18 18:52:48,623 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 13 treesize of output 9 [2022-11-18 18:52:48,833 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 13 treesize of output 9 [2022-11-18 18:52:48,972 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 13 treesize of output 9 [2022-11-18 18:52:49,031 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 13 treesize of output 9 [2022-11-18 18:52:49,083 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 13 treesize of output 9 [2022-11-18 18:52:49,165 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 13 treesize of output 9 [2022-11-18 18:52:49,223 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 13 treesize of output 9 [2022-11-18 18:52:49,374 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 13 treesize of output 9 [2022-11-18 18:52:49,447 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 13 treesize of output 9 [2022-11-18 18:52:49,483 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 18:52:49,518 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 18:52:49,608 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 13 treesize of output 9 [2022-11-18 18:52:49,700 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 13 treesize of output 9 [2022-11-18 18:52:54,462 INFO L321 Elim1Store]: treesize reduction 298, result has 15.6 percent of original size [2022-11-18 18:52:54,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 10 case distinctions, treesize of input 312 treesize of output 369 [2022-11-18 18:52:55,500 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 11 treesize of output 7 [2022-11-18 18:52:55,515 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 11 treesize of output 7 [2022-11-18 18:52:55,525 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 11 treesize of output 7 [2022-11-18 18:52:55,544 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 13 treesize of output 9 [2022-11-18 18:53:44,172 WARN L233 SmtUtils]: Spent 9.42s on a formula simplification that was a NOOP. DAG size: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:55:20,143 WARN L233 SmtUtils]: Spent 58.36s on a formula simplification. DAG size of input: 352 DAG size of output: 155 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:55:37,420 WARN L233 SmtUtils]: Spent 7.89s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:55:38,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:55:38,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:55:38,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:55:38,293 INFO L321 Elim1Store]: treesize reduction 36, result has 48.6 percent of original size [2022-11-18 18:55:38,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 224 [2022-11-18 18:55:38,998 INFO L321 Elim1Store]: treesize reduction 435, result has 11.2 percent of original size [2022-11-18 18:55:38,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 10 case distinctions, treesize of input 5385 treesize of output 5182 [2022-11-18 18:55:52,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 4717 treesize of output 4653 [2022-11-18 18:56:04,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 4717 treesize of output 4653 [2022-11-18 18:56:18,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2022-11-18 18:56:18,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2022-11-18 18:56:18,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 102 [2022-11-18 18:56:18,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2022-11-18 18:56:19,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2022-11-18 18:56:19,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 102 [2022-11-18 18:56:19,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 103 [2022-11-18 18:56:19,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 93 [2022-11-18 18:56:21,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2022-11-18 18:56:21,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2022-11-18 18:56:21,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 102 [2022-11-18 18:56:21,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 103 [2022-11-18 18:56:21,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 93 [2022-11-18 18:56:21,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2022-11-18 18:56:22,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2022-11-18 18:56:22,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 102