./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa --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 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:46:23,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:46:23,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:46:23,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:46:23,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:46:23,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:46:23,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:46:23,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:46:23,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:46:23,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:46:23,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:46:23,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:46:23,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:46:23,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:46:23,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:46:23,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:46:23,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:46:23,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:46:23,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:46:23,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:46:23,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:46:23,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:46:23,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:46:23,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:46:23,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:46:23,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:46:23,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:46:23,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:46:23,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:46:23,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:46:23,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:46:23,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:46:23,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:46:23,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:46:23,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:46:23,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:46:23,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:46:23,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:46:23,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:46:23,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:46:23,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:46:23,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 23:46:23,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:46:23,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:46:23,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:46:23,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:46:23,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:46:23,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:46:23,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:46:23,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:46:23,230 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:46:23,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:46:23,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:46:23,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:46:23,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:46:23,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:46:23,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:46:23,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:46:23,231 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:46:23,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:46:23,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:46:23,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:46:23,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:46:23,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:46:23,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:46:23,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:46:23,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:46:23,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:46:23,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:46:23,232 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:46:23,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:46:23,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:46:23,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:46:23,233 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_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2021-12-06 23:46:23,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:46:23,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:46:23,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:46:23,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:46:23,435 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:46:23,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-12-06 23:46:23,476 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/data/3fe65400d/f68385fd92a046de9994fa26d5b6e67a/FLAGd997b2ef1 [2021-12-06 23:46:24,074 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:46:24,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-12-06 23:46:24,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/data/3fe65400d/f68385fd92a046de9994fa26d5b6e67a/FLAGd997b2ef1 [2021-12-06 23:46:24,482 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/data/3fe65400d/f68385fd92a046de9994fa26d5b6e67a [2021-12-06 23:46:24,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:46:24,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:46:24,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:46:24,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:46:24,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:46:24,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:46:24" (1/1) ... [2021-12-06 23:46:24,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8235d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:24, skipping insertion in model container [2021-12-06 23:46:24,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:46:24" (1/1) ... [2021-12-06 23:46:24,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:46:24,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:46:24,824 WARN L230 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_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-12-06 23:46:24,829 WARN L230 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_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-12-06 23:46:25,502 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,503 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,503 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,522 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,524 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,788 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 23:46:25,788 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 23:46:25,789 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 23:46:25,790 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 23:46:25,791 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 23:46:25,792 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 23:46:25,792 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 23:46:25,793 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 23:46:25,793 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 23:46:25,793 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 23:46:25,904 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 23:46:25,925 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,926 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,990 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,990 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,993 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,993 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,993 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,995 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,995 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:25,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,003 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,004 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,004 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:46:26,034 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:46:26,044 WARN L230 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_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-12-06 23:46:26,044 WARN L230 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_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-12-06 23:46:26,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,070 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,074 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,074 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,077 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,098 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 23:46:26,099 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 23:46:26,100 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 23:46:26,100 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 23:46:26,101 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 23:46:26,101 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 23:46:26,101 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 23:46:26,102 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 23:46:26,102 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 23:46:26,102 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 23:46:26,117 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 23:46:26,127 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,127 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,128 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,147 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,148 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,148 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,148 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,148 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,148 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,153 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,153 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,169 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,169 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,170 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:46:26,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:46:26,340 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:46:26,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26 WrapperNode [2021-12-06 23:46:26,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:46:26,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:46:26,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:46:26,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:46:26,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26" (1/1) ... [2021-12-06 23:46:26,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26" (1/1) ... [2021-12-06 23:46:26,494 INFO L137 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 61, calls inlined = 14, statements flattened = 815 [2021-12-06 23:46:26,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:46:26,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:46:26,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:46:26,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:46:26,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26" (1/1) ... [2021-12-06 23:46:26,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26" (1/1) ... [2021-12-06 23:46:26,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26" (1/1) ... [2021-12-06 23:46:26,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26" (1/1) ... [2021-12-06 23:46:26,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26" (1/1) ... [2021-12-06 23:46:26,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26" (1/1) ... [2021-12-06 23:46:26,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26" (1/1) ... [2021-12-06 23:46:26,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:46:26,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:46:26,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:46:26,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:46:26,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26" (1/1) ... [2021-12-06 23:46:26,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:46:26,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:26,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:46:26,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:46:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-06 23:46:26,622 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-06 23:46:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-06 23:46:26,622 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-06 23:46:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:46:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-06 23:46:26,622 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-06 23:46:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-06 23:46:26,622 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-06 23:46:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-06 23:46:26,622 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-06 23:46:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-12-06 23:46:26,623 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-12-06 23:46:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:46:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-06 23:46:26,623 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-06 23:46:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 23:46:26,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 23:46:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:46:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:46:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:46:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-12-06 23:46:26,623 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-12-06 23:46:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-06 23:46:26,624 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-06 23:46:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:46:26,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:46:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-06 23:46:26,624 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-06 23:46:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-06 23:46:26,624 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-06 23:46:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-06 23:46:26,624 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-06 23:46:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-06 23:46:26,624 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-06 23:46:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-06 23:46:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-06 23:46:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 23:46:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 23:46:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-06 23:46:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-06 23:46:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:46:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:46:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:46:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-06 23:46:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-06 23:46:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-06 23:46:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-06 23:46:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-06 23:46:26,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-06 23:46:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:46:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-06 23:46:26,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-06 23:46:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-06 23:46:26,626 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-06 23:46:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 23:46:26,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 23:46:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:46:26,844 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:46:26,845 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:46:27,611 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:46:27,619 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:46:27,619 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-06 23:46:27,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:46:27 BoogieIcfgContainer [2021-12-06 23:46:27,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:46:27,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:46:27,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:46:27,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:46:27,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:46:24" (1/3) ... [2021-12-06 23:46:27,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33206819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:46:27, skipping insertion in model container [2021-12-06 23:46:27,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:26" (2/3) ... [2021-12-06 23:46:27,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33206819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:46:27, skipping insertion in model container [2021-12-06 23:46:27,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:46:27" (3/3) ... [2021-12-06 23:46:27,626 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2021-12-06 23:46:27,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:46:27,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 23:46:27,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:46:27,672 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:46:27,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 23:46:27,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 315 states, 194 states have (on average 1.2577319587628866) internal successors, (244), 197 states have internal predecessors, (244), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-06 23:46:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 23:46:27,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:27,703 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-12-06 23:46:27,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:27,707 INFO L85 PathProgramCache]: Analyzing trace with hash -30055658, now seen corresponding path program 1 times [2021-12-06 23:46:27,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:27,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153854379] [2021-12-06 23:46:27,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:27,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:46:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 23:46:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:46:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:46:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:46:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:46:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:46:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:46:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:46:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:46:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 23:46:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 23:46:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 23:46:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 23:46:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 23:46:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 23:46:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-06 23:46:28,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:28,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153854379] [2021-12-06 23:46:28,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153854379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:28,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:28,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:46:28,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656662503] [2021-12-06 23:46:28,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:28,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:46:28,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:28,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:46:28,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:46:28,280 INFO L87 Difference]: Start difference. First operand has 315 states, 194 states have (on average 1.2577319587628866) internal successors, (244), 197 states have internal predecessors, (244), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 23:46:28,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:28,980 INFO L93 Difference]: Finished difference Result 711 states and 1124 transitions. [2021-12-06 23:46:28,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:46:28,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 104 [2021-12-06 23:46:28,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:28,993 INFO L225 Difference]: With dead ends: 711 [2021-12-06 23:46:28,993 INFO L226 Difference]: Without dead ends: 402 [2021-12-06 23:46:29,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:46:29,002 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 237 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:29,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 514 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:46:29,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-12-06 23:46:29,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 308. [2021-12-06 23:46:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 189 states have (on average 1.2222222222222223) internal successors, (231), 191 states have internal predecessors, (231), 95 states have call successors, (95), 23 states have call predecessors, (95), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2021-12-06 23:46:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 419 transitions. [2021-12-06 23:46:29,066 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 419 transitions. Word has length 104 [2021-12-06 23:46:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:29,067 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 419 transitions. [2021-12-06 23:46:29,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 23:46:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 419 transitions. [2021-12-06 23:46:29,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 23:46:29,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:29,070 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-12-06 23:46:29,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:46:29,071 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash -380024514, now seen corresponding path program 1 times [2021-12-06 23:46:29,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:29,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212721579] [2021-12-06 23:46:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:29,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:46:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 23:46:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:46:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:46:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:46:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:46:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:46:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:46:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:46:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:46:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 23:46:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 23:46:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 23:46:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 23:46:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 23:46:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 23:46:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-06 23:46:29,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:29,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212721579] [2021-12-06 23:46:29,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212721579] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:46:29,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967782867] [2021-12-06 23:46:29,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:29,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:29,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:29,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:29,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:46:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:29,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 2188 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:46:29,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-06 23:46:29,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:29,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967782867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:29,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:46:29,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-06 23:46:29,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729127794] [2021-12-06 23:46:29,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:29,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:46:29,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:29,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:46:29,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:46:29,907 INFO L87 Difference]: Start difference. First operand 308 states and 419 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 23:46:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:30,081 INFO L93 Difference]: Finished difference Result 582 states and 798 transitions. [2021-12-06 23:46:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:46:30,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 104 [2021-12-06 23:46:30,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:30,086 INFO L225 Difference]: With dead ends: 582 [2021-12-06 23:46:30,086 INFO L226 Difference]: Without dead ends: 310 [2021-12-06 23:46:30,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:46:30,089 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 442 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:30,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 1476 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:46:30,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-12-06 23:46:30,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2021-12-06 23:46:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 190 states have (on average 1.2210526315789474) internal successors, (232), 193 states have internal predecessors, (232), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (97), 93 states have call predecessors, (97), 93 states have call successors, (97) [2021-12-06 23:46:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 424 transitions. [2021-12-06 23:46:30,126 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 424 transitions. Word has length 104 [2021-12-06 23:46:30,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:30,127 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 424 transitions. [2021-12-06 23:46:30,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 23:46:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 424 transitions. [2021-12-06 23:46:30,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 23:46:30,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:30,132 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2021-12-06 23:46:30,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:46:30,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-06 23:46:30,333 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:30,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:30,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1602100200, now seen corresponding path program 1 times [2021-12-06 23:46:30,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:30,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576824816] [2021-12-06 23:46:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:30,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:46:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 23:46:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:46:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:46:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:46:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:46:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:46:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:46:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:46:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:46:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:46:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 23:46:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 23:46:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:46:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:46:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 23:46:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 23:46:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-06 23:46:30,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:30,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576824816] [2021-12-06 23:46:30,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576824816] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:46:30,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872770799] [2021-12-06 23:46:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:30,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:30,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:30,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:30,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:46:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:31,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 2238 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:46:31,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-06 23:46:31,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:31,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872770799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:31,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:46:31,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-06 23:46:31,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030041275] [2021-12-06 23:46:31,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:31,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:46:31,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:31,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:46:31,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:46:31,169 INFO L87 Difference]: Start difference. First operand 310 states and 424 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 23:46:31,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:31,395 INFO L93 Difference]: Finished difference Result 605 states and 845 transitions. [2021-12-06 23:46:31,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:46:31,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 112 [2021-12-06 23:46:31,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:31,406 INFO L225 Difference]: With dead ends: 605 [2021-12-06 23:46:31,406 INFO L226 Difference]: Without dead ends: 331 [2021-12-06 23:46:31,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:46:31,408 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 506 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:31,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 2124 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:46:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-06 23:46:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2021-12-06 23:46:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-06 23:46:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2021-12-06 23:46:31,431 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 112 [2021-12-06 23:46:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:31,432 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2021-12-06 23:46:31,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 23:46:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2021-12-06 23:46:31,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 23:46:31,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:31,435 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2021-12-06 23:46:31,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:46:31,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:31,636 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:31,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1616611866, now seen corresponding path program 1 times [2021-12-06 23:46:31,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:31,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510118747] [2021-12-06 23:46:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:31,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:31,695 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:31,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145656615] [2021-12-06 23:46:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:31,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:31,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:31,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:31,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:46:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:31,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:46:31,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-06 23:46:32,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:32,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:32,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510118747] [2021-12-06 23:46:32,100 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:32,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145656615] [2021-12-06 23:46:32,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145656615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:32,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:32,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:46:32,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572310433] [2021-12-06 23:46:32,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:32,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:46:32,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:46:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:46:32,102 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 23:46:32,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:32,275 INFO L93 Difference]: Finished difference Result 630 states and 894 transitions. [2021-12-06 23:46:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:46:32,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 127 [2021-12-06 23:46:32,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:32,279 INFO L225 Difference]: With dead ends: 630 [2021-12-06 23:46:32,279 INFO L226 Difference]: Without dead ends: 337 [2021-12-06 23:46:32,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:46:32,281 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 466 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:32,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1813 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:46:32,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-06 23:46:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 329. [2021-12-06 23:46:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-06 23:46:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2021-12-06 23:46:32,305 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 127 [2021-12-06 23:46:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:32,305 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2021-12-06 23:46:32,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 23:46:32,305 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2021-12-06 23:46:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-06 23:46:32,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:32,307 INFO L514 BasicCegarLoop]: trace histogram [7, 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] [2021-12-06 23:46:32,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:46:32,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:32,508 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:32,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:32,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1521582877, now seen corresponding path program 1 times [2021-12-06 23:46:32,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:32,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162295997] [2021-12-06 23:46:32,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:32,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:32,557 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:32,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973482530] [2021-12-06 23:46:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:32,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:32,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:32,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:32,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:46:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:32,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:46:32,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-06 23:46:33,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:33,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:33,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162295997] [2021-12-06 23:46:33,014 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:33,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973482530] [2021-12-06 23:46:33,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973482530] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:33,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:33,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:46:33,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133826160] [2021-12-06 23:46:33,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:33,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:46:33,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:33,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:46:33,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:46:33,016 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-06 23:46:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:33,312 INFO L93 Difference]: Finished difference Result 640 states and 907 transitions. [2021-12-06 23:46:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:46:33,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 143 [2021-12-06 23:46:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:33,315 INFO L225 Difference]: With dead ends: 640 [2021-12-06 23:46:33,315 INFO L226 Difference]: Without dead ends: 347 [2021-12-06 23:46:33,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:46:33,317 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 537 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:33,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 2434 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:46:33,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-06 23:46:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 329. [2021-12-06 23:46:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-06 23:46:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2021-12-06 23:46:33,333 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 143 [2021-12-06 23:46:33,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:33,333 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2021-12-06 23:46:33,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-06 23:46:33,334 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2021-12-06 23:46:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 23:46:33,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:33,336 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 23:46:33,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:46:33,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:33,536 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:33,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:33,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1907107023, now seen corresponding path program 1 times [2021-12-06 23:46:33,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:33,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413035609] [2021-12-06 23:46:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:33,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:33,597 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:33,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418289206] [2021-12-06 23:46:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:33,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:33,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:33,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:33,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:46:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:46:33,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 23:46:34,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:34,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:34,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413035609] [2021-12-06 23:46:34,084 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:34,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418289206] [2021-12-06 23:46:34,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418289206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:34,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:34,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:46:34,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400653774] [2021-12-06 23:46:34,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:34,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:46:34,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:46:34,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:46:34,085 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 23:46:34,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:34,271 INFO L93 Difference]: Finished difference Result 595 states and 843 transitions. [2021-12-06 23:46:34,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:46:34,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 158 [2021-12-06 23:46:34,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:34,275 INFO L225 Difference]: With dead ends: 595 [2021-12-06 23:46:34,275 INFO L226 Difference]: Without dead ends: 331 [2021-12-06 23:46:34,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:46:34,277 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 487 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:34,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 2129 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:46:34,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-06 23:46:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-12-06 23:46:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 207 states have (on average 1.2318840579710144) internal successors, (255), 211 states have internal predecessors, (255), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (112), 96 states have call predecessors, (112), 95 states have call successors, (112) [2021-12-06 23:46:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 464 transitions. [2021-12-06 23:46:34,292 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 464 transitions. Word has length 158 [2021-12-06 23:46:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:34,292 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 464 transitions. [2021-12-06 23:46:34,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 23:46:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 464 transitions. [2021-12-06 23:46:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-06 23:46:34,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:34,295 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:34,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:46:34,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:34,496 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:34,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:34,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2069947675, now seen corresponding path program 1 times [2021-12-06 23:46:34,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:34,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769695456] [2021-12-06 23:46:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:34,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:34,575 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:34,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987697281] [2021-12-06 23:46:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:34,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:34,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:34,576 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:34,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:46:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:34,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:46:34,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-06 23:46:35,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:35,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:35,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769695456] [2021-12-06 23:46:35,054 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:35,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987697281] [2021-12-06 23:46:35,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987697281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:35,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:35,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 23:46:35,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304953637] [2021-12-06 23:46:35,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:35,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:46:35,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:35,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:46:35,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:46:35,055 INFO L87 Difference]: Start difference. First operand 331 states and 464 transitions. Second operand has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-06 23:46:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:35,317 INFO L93 Difference]: Finished difference Result 613 states and 869 transitions. [2021-12-06 23:46:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:46:35,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 174 [2021-12-06 23:46:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:35,321 INFO L225 Difference]: With dead ends: 613 [2021-12-06 23:46:35,321 INFO L226 Difference]: Without dead ends: 347 [2021-12-06 23:46:35,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:46:35,323 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 519 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:35,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 2831 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:46:35,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-06 23:46:35,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2021-12-06 23:46:35,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 220 states have (on average 1.240909090909091) internal successors, (273), 223 states have internal predecessors, (273), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2021-12-06 23:46:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 484 transitions. [2021-12-06 23:46:35,338 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 484 transitions. Word has length 174 [2021-12-06 23:46:35,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:35,338 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 484 transitions. [2021-12-06 23:46:35,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-06 23:46:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 484 transitions. [2021-12-06 23:46:35,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-06 23:46:35,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:35,341 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 23:46:35,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:46:35,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:35,542 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:35,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:35,543 INFO L85 PathProgramCache]: Analyzing trace with hash -586575313, now seen corresponding path program 1 times [2021-12-06 23:46:35,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:35,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481820681] [2021-12-06 23:46:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:35,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:35,594 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:35,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642541083] [2021-12-06 23:46:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:35,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:35,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:35,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:35,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:46:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:35,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:46:35,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-06 23:46:36,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:36,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:36,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481820681] [2021-12-06 23:46:36,156 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:36,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642541083] [2021-12-06 23:46:36,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642541083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:36,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:36,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:46:36,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399706351] [2021-12-06 23:46:36,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:36,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:46:36,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:36,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:46:36,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:46:36,158 INFO L87 Difference]: Start difference. First operand 345 states and 484 transitions. Second operand has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 23:46:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:36,366 INFO L93 Difference]: Finished difference Result 633 states and 897 transitions. [2021-12-06 23:46:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:46:36,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 204 [2021-12-06 23:46:36,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:36,370 INFO L225 Difference]: With dead ends: 633 [2021-12-06 23:46:36,370 INFO L226 Difference]: Without dead ends: 353 [2021-12-06 23:46:36,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:46:36,373 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 511 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:36,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 2444 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:46:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-12-06 23:46:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 345. [2021-12-06 23:46:36,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 220 states have (on average 1.240909090909091) internal successors, (273), 223 states have internal predecessors, (273), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2021-12-06 23:46:36,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 484 transitions. [2021-12-06 23:46:36,394 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 484 transitions. Word has length 204 [2021-12-06 23:46:36,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:36,394 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 484 transitions. [2021-12-06 23:46:36,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 23:46:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 484 transitions. [2021-12-06 23:46:36,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-12-06 23:46:36,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:36,399 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:36,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:46:36,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 23:46:36,600 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:36,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:36,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1182025265, now seen corresponding path program 1 times [2021-12-06 23:46:36,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:36,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715897715] [2021-12-06 23:46:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:36,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:36,694 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:36,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545951907] [2021-12-06 23:46:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:36,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:36,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:36,695 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:36,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:46:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:37,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 3118 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:46:37,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-06 23:46:37,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:37,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:37,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715897715] [2021-12-06 23:46:37,283 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:37,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545951907] [2021-12-06 23:46:37,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545951907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:37,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:37,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 23:46:37,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553399096] [2021-12-06 23:46:37,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:37,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:46:37,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:37,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:46:37,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:46:37,285 INFO L87 Difference]: Start difference. First operand 345 states and 484 transitions. Second operand has 11 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 23:46:37,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:37,669 INFO L93 Difference]: Finished difference Result 627 states and 887 transitions. [2021-12-06 23:46:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:46:37,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 236 [2021-12-06 23:46:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:37,671 INFO L225 Difference]: With dead ends: 627 [2021-12-06 23:46:37,672 INFO L226 Difference]: Without dead ends: 347 [2021-12-06 23:46:37,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:46:37,673 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 582 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:37,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 3015 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:46:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-06 23:46:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 329. [2021-12-06 23:46:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-06 23:46:37,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 459 transitions. [2021-12-06 23:46:37,687 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 459 transitions. Word has length 236 [2021-12-06 23:46:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:37,688 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 459 transitions. [2021-12-06 23:46:37,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 23:46:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 459 transitions. [2021-12-06 23:46:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-06 23:46:37,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:37,691 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:37,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:46:37,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:37,892 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1259871209, now seen corresponding path program 1 times [2021-12-06 23:46:37,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:37,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324214845] [2021-12-06 23:46:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:37,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:37,962 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:37,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548257459] [2021-12-06 23:46:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:37,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:37,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:37,964 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:37,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:46:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:38,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 3400 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:46:38,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-06 23:46:38,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:38,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:38,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324214845] [2021-12-06 23:46:38,612 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:38,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548257459] [2021-12-06 23:46:38,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548257459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:38,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:38,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:46:38,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128573593] [2021-12-06 23:46:38,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:38,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:46:38,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:46:38,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:46:38,614 INFO L87 Difference]: Start difference. First operand 329 states and 459 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:46:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:38,849 INFO L93 Difference]: Finished difference Result 658 states and 935 transitions. [2021-12-06 23:46:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:46:38,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 266 [2021-12-06 23:46:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:38,852 INFO L225 Difference]: With dead ends: 658 [2021-12-06 23:46:38,852 INFO L226 Difference]: Without dead ends: 365 [2021-12-06 23:46:38,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:46:38,854 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 21 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:38,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1944 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:46:38,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-12-06 23:46:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2021-12-06 23:46:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 214 states have (on average 1.233644859813084) internal successors, (264), 217 states have internal predecessors, (264), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-06 23:46:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 469 transitions. [2021-12-06 23:46:38,869 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 469 transitions. Word has length 266 [2021-12-06 23:46:38,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:38,870 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 469 transitions. [2021-12-06 23:46:38,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:46:38,870 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 469 transitions. [2021-12-06 23:46:38,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-06 23:46:38,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:38,872 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:38,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 23:46:39,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 23:46:39,073 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1029084259, now seen corresponding path program 1 times [2021-12-06 23:46:39,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:39,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850920515] [2021-12-06 23:46:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:39,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:39,183 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:39,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444965272] [2021-12-06 23:46:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:39,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:39,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:39,184 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:39,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:46:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:39,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 3391 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:46:39,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-12-06 23:46:39,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:39,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:39,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850920515] [2021-12-06 23:46:39,738 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:39,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444965272] [2021-12-06 23:46:39,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444965272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:39,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:39,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:46:39,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458804274] [2021-12-06 23:46:39,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:39,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:46:39,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:46:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:46:39,739 INFO L87 Difference]: Start difference. First operand 337 states and 469 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:46:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:39,762 INFO L93 Difference]: Finished difference Result 646 states and 911 transitions. [2021-12-06 23:46:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:46:39,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 266 [2021-12-06 23:46:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:39,765 INFO L225 Difference]: With dead ends: 646 [2021-12-06 23:46:39,766 INFO L226 Difference]: Without dead ends: 345 [2021-12-06 23:46:39,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:46:39,767 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 3 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1243 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 [2021-12-06 23:46:39,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1243 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:46:39,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-06 23:46:39,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 341. [2021-12-06 23:46:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 218 states have (on average 1.2293577981651376) internal successors, (268), 221 states have internal predecessors, (268), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-06 23:46:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 473 transitions. [2021-12-06 23:46:39,781 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 473 transitions. Word has length 266 [2021-12-06 23:46:39,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:39,781 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 473 transitions. [2021-12-06 23:46:39,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:46:39,782 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 473 transitions. [2021-12-06 23:46:39,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-06 23:46:39,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:39,783 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:39,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 23:46:39,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 23:46:39,984 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:39,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:39,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2079122269, now seen corresponding path program 1 times [2021-12-06 23:46:39,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:39,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856254467] [2021-12-06 23:46:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:39,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:40,084 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:40,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682784704] [2021-12-06 23:46:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:40,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:40,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:40,085 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:40,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 23:46:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:40,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-06 23:46:40,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:41,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-06 23:46:41,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-06 23:46:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-06 23:46:41,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:41,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:41,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856254467] [2021-12-06 23:46:41,306 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:41,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682784704] [2021-12-06 23:46:41,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682784704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:41,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:41,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 23:46:41,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447732329] [2021-12-06 23:46:41,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:41,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:46:41,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:46:41,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:46:41,308 INFO L87 Difference]: Start difference. First operand 341 states and 473 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-06 23:46:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:41,811 INFO L93 Difference]: Finished difference Result 685 states and 963 transitions. [2021-12-06 23:46:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:46:41,811 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 266 [2021-12-06 23:46:41,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:41,814 INFO L225 Difference]: With dead ends: 685 [2021-12-06 23:46:41,814 INFO L226 Difference]: Without dead ends: 406 [2021-12-06 23:46:41,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 251 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2021-12-06 23:46:41,816 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 110 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 3749 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:41,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 3749 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 453 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2021-12-06 23:46:41,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-12-06 23:46:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 362. [2021-12-06 23:46:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 235 states have (on average 1.225531914893617) internal successors, (288), 238 states have internal predecessors, (288), 99 states have call successors, (99), 24 states have call predecessors, (99), 26 states have return successors, (116), 99 states have call predecessors, (116), 97 states have call successors, (116) [2021-12-06 23:46:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 503 transitions. [2021-12-06 23:46:41,832 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 503 transitions. Word has length 266 [2021-12-06 23:46:41,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:41,832 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 503 transitions. [2021-12-06 23:46:41,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-06 23:46:41,833 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 503 transitions. [2021-12-06 23:46:41,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-06 23:46:41,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:41,834 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:41,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 23:46:42,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:42,036 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:42,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:42,037 INFO L85 PathProgramCache]: Analyzing trace with hash 643150753, now seen corresponding path program 1 times [2021-12-06 23:46:42,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:42,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289454229] [2021-12-06 23:46:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:42,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:42,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:42,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064806062] [2021-12-06 23:46:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:42,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:42,113 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:42,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 23:46:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:42,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 3379 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 23:46:42,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-06 23:46:42,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:42,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:42,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289454229] [2021-12-06 23:46:42,687 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:42,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064806062] [2021-12-06 23:46:42,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064806062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:42,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:42,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:46:42,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540452312] [2021-12-06 23:46:42,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:42,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:46:42,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:42,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:46:42,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:46:42,689 INFO L87 Difference]: Start difference. First operand 362 states and 503 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:46:42,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:42,720 INFO L93 Difference]: Finished difference Result 699 states and 989 transitions. [2021-12-06 23:46:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:46:42,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 266 [2021-12-06 23:46:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:42,723 INFO L225 Difference]: With dead ends: 699 [2021-12-06 23:46:42,723 INFO L226 Difference]: Without dead ends: 382 [2021-12-06 23:46:42,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:46:42,725 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 8 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1710 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 [2021-12-06 23:46:42,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1710 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:46:42,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-12-06 23:46:42,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 370. [2021-12-06 23:46:42,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 243 states have (on average 1.2222222222222223) internal successors, (297), 246 states have internal predecessors, (297), 99 states have call successors, (99), 24 states have call predecessors, (99), 26 states have return successors, (116), 99 states have call predecessors, (116), 97 states have call successors, (116) [2021-12-06 23:46:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 512 transitions. [2021-12-06 23:46:42,740 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 512 transitions. Word has length 266 [2021-12-06 23:46:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:42,741 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 512 transitions. [2021-12-06 23:46:42,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:46:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 512 transitions. [2021-12-06 23:46:42,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-12-06 23:46:42,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:42,743 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:42,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 23:46:42,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:42,944 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash -971336142, now seen corresponding path program 1 times [2021-12-06 23:46:42,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:42,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399024934] [2021-12-06 23:46:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:42,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:43,027 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:43,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889490511] [2021-12-06 23:46:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:43,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:43,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:43,028 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:43,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 23:46:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:43,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 3378 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 23:46:43,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:43,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:46:43,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:46:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-06 23:46:43,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:43,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:43,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399024934] [2021-12-06 23:46:43,987 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:43,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889490511] [2021-12-06 23:46:43,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889490511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:43,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:43,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 23:46:43,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100596365] [2021-12-06 23:46:43,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:43,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:46:43,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:43,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:46:43,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:46:43,989 INFO L87 Difference]: Start difference. First operand 370 states and 512 transitions. Second operand has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 13 states have internal predecessors, (111), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-06 23:46:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:44,568 INFO L93 Difference]: Finished difference Result 782 states and 1095 transitions. [2021-12-06 23:46:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:46:44,568 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 13 states have internal predecessors, (111), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 268 [2021-12-06 23:46:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:44,571 INFO L225 Difference]: With dead ends: 782 [2021-12-06 23:46:44,571 INFO L226 Difference]: Without dead ends: 453 [2021-12-06 23:46:44,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 255 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:46:44,573 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 102 mSDsluCounter, 3679 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 4077 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:44,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 4077 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 733 Invalid, 0 Unknown, 89 Unchecked, 0.4s Time] [2021-12-06 23:46:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-12-06 23:46:44,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 418. [2021-12-06 23:46:44,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 284 states have (on average 1.221830985915493) internal successors, (347), 288 states have internal predecessors, (347), 102 states have call successors, (102), 25 states have call predecessors, (102), 30 states have return successors, (141), 104 states have call predecessors, (141), 100 states have call successors, (141) [2021-12-06 23:46:44,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 590 transitions. [2021-12-06 23:46:44,590 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 590 transitions. Word has length 268 [2021-12-06 23:46:44,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:44,591 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 590 transitions. [2021-12-06 23:46:44,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 13 states have internal predecessors, (111), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-06 23:46:44,591 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 590 transitions. [2021-12-06 23:46:44,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-12-06 23:46:44,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:44,593 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:44,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 23:46:44,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 23:46:44,793 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:44,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash 452560748, now seen corresponding path program 1 times [2021-12-06 23:46:44,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:44,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469072834] [2021-12-06 23:46:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:44,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:44,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:44,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940555819] [2021-12-06 23:46:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:44,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:44,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:44,838 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:44,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 23:46:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:45,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:46:45,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-12-06 23:46:45,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:45,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:45,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469072834] [2021-12-06 23:46:45,442 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:45,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940555819] [2021-12-06 23:46:45,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940555819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:45,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:45,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:46:45,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821479646] [2021-12-06 23:46:45,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:45,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:46:45,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:45,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:46:45,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:46:45,443 INFO L87 Difference]: Start difference. First operand 418 states and 590 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:46:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:45,474 INFO L93 Difference]: Finished difference Result 803 states and 1178 transitions. [2021-12-06 23:46:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:46:45,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 268 [2021-12-06 23:46:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:45,477 INFO L225 Difference]: With dead ends: 803 [2021-12-06 23:46:45,477 INFO L226 Difference]: Without dead ends: 421 [2021-12-06 23:46:45,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:46:45,480 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 7 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1249 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 [2021-12-06 23:46:45,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1249 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:46:45,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-12-06 23:46:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 418. [2021-12-06 23:46:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 284 states have (on average 1.2183098591549295) internal successors, (346), 288 states have internal predecessors, (346), 102 states have call successors, (102), 25 states have call predecessors, (102), 30 states have return successors, (141), 104 states have call predecessors, (141), 100 states have call successors, (141) [2021-12-06 23:46:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 589 transitions. [2021-12-06 23:46:45,495 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 589 transitions. Word has length 268 [2021-12-06 23:46:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:45,496 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 589 transitions. [2021-12-06 23:46:45,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:46:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 589 transitions. [2021-12-06 23:46:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-06 23:46:45,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:45,498 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:45,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 23:46:45,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:45,698 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:45,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:45,699 INFO L85 PathProgramCache]: Analyzing trace with hash 214566414, now seen corresponding path program 1 times [2021-12-06 23:46:45,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:45,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414201168] [2021-12-06 23:46:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:45,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:45,743 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:45,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539637151] [2021-12-06 23:46:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:45,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:45,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:45,744 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:45,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 23:46:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:46,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 3388 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:46:46,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-12-06 23:46:46,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:46,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:46,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414201168] [2021-12-06 23:46:46,334 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:46,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539637151] [2021-12-06 23:46:46,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539637151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:46,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:46,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:46:46,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470773613] [2021-12-06 23:46:46,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:46,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:46:46,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:46,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:46:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:46:46,336 INFO L87 Difference]: Start difference. First operand 418 states and 589 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:46:46,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:46,515 INFO L93 Difference]: Finished difference Result 807 states and 1190 transitions. [2021-12-06 23:46:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:46:46,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 270 [2021-12-06 23:46:46,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:46,518 INFO L225 Difference]: With dead ends: 807 [2021-12-06 23:46:46,518 INFO L226 Difference]: Without dead ends: 425 [2021-12-06 23:46:46,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:46:46,521 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 15 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:46,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1596 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:46:46,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-12-06 23:46:46,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 419. [2021-12-06 23:46:46,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 285 states have (on average 1.2175438596491228) internal successors, (347), 289 states have internal predecessors, (347), 102 states have call successors, (102), 25 states have call predecessors, (102), 30 states have return successors, (141), 104 states have call predecessors, (141), 100 states have call successors, (141) [2021-12-06 23:46:46,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 590 transitions. [2021-12-06 23:46:46,538 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 590 transitions. Word has length 270 [2021-12-06 23:46:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:46,538 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 590 transitions. [2021-12-06 23:46:46,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:46:46,539 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 590 transitions. [2021-12-06 23:46:46,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-06 23:46:46,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:46,541 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:46,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 23:46:46,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 23:46:46,742 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:46,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:46,743 INFO L85 PathProgramCache]: Analyzing trace with hash -312827636, now seen corresponding path program 1 times [2021-12-06 23:46:46,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:46,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915871928] [2021-12-06 23:46:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:46,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:46,822 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:46,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180551485] [2021-12-06 23:46:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:46,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:46,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:46,823 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:46,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 23:46:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:47,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 3383 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-06 23:46:47,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:47,410 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2684 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2684))) is different from true [2021-12-06 23:46:47,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:46:47,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-12-06 23:46:47,667 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-06 23:46:47,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:47,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:47,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915871928] [2021-12-06 23:46:47,667 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:47,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180551485] [2021-12-06 23:46:47,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180551485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:47,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:47,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 23:46:47,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912600458] [2021-12-06 23:46:47,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:47,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:46:47,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:47,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:46:47,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=121, Unknown=12, NotChecked=22, Total=182 [2021-12-06 23:46:47,668 INFO L87 Difference]: Start difference. First operand 419 states and 590 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 7 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-06 23:46:48,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:48,566 INFO L93 Difference]: Finished difference Result 991 states and 1499 transitions. [2021-12-06 23:46:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 23:46:48,566 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 7 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 270 [2021-12-06 23:46:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:48,570 INFO L225 Difference]: With dead ends: 991 [2021-12-06 23:46:48,570 INFO L226 Difference]: Without dead ends: 608 [2021-12-06 23:46:48,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=450, Unknown=28, NotChecked=46, Total=650 [2021-12-06 23:46:48,573 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 283 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 3661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2040 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:48,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2690 Invalid, 3661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1452 Invalid, 0 Unknown, 2040 Unchecked, 0.7s Time] [2021-12-06 23:46:48,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-12-06 23:46:48,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 428. [2021-12-06 23:46:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 291 states have (on average 1.1993127147766323) internal successors, (349), 294 states have internal predecessors, (349), 102 states have call successors, (102), 25 states have call predecessors, (102), 33 states have return successors, (164), 108 states have call predecessors, (164), 100 states have call successors, (164) [2021-12-06 23:46:48,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 615 transitions. [2021-12-06 23:46:48,595 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 615 transitions. Word has length 270 [2021-12-06 23:46:48,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:48,596 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 615 transitions. [2021-12-06 23:46:48,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 7 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-06 23:46:48,596 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 615 transitions. [2021-12-06 23:46:48,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-12-06 23:46:48,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:48,598 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:48,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 23:46:48,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 23:46:48,799 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:48,799 INFO L85 PathProgramCache]: Analyzing trace with hash 327777536, now seen corresponding path program 1 times [2021-12-06 23:46:48,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:48,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84107046] [2021-12-06 23:46:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:48,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:48,904 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:48,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798194205] [2021-12-06 23:46:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:48,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:48,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:48,905 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:48,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 23:46:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:49,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-06 23:46:49,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:49,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:46:49,724 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 23:46:49,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 22 [2021-12-06 23:46:51,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:46:51,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:46:54,425 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2912 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2912))) is different from true [2021-12-06 23:46:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 260 proven. 20 refuted. 2 times theorem prover too weak. 165 trivial. 3 not checked. [2021-12-06 23:46:55,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:46:56,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84107046] [2021-12-06 23:46:56,380 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798194205] [2021-12-06 23:46:56,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798194205] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:46:56,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:46:56,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-12-06 23:46:56,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556036653] [2021-12-06 23:46:56,380 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 23:46:56,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 23:46:56,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:56,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 23:46:56,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=856, Unknown=38, NotChecked=60, Total=1056 [2021-12-06 23:46:56,382 INFO L87 Difference]: Start difference. First operand 428 states and 615 transitions. Second operand has 32 states, 28 states have (on average 4.785714285714286) internal successors, (134), 27 states have internal predecessors, (134), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2021-12-06 23:46:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:58,396 INFO L93 Difference]: Finished difference Result 1026 states and 1569 transitions. [2021-12-06 23:46:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 23:46:58,397 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.785714285714286) internal successors, (134), 27 states have internal predecessors, (134), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) Word has length 274 [2021-12-06 23:46:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:58,402 INFO L225 Difference]: With dead ends: 1026 [2021-12-06 23:46:58,402 INFO L226 Difference]: Without dead ends: 648 [2021-12-06 23:46:58,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 394 SyntacticMatches, 10 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=167, Invalid=1591, Unknown=52, NotChecked=82, Total=1892 [2021-12-06 23:46:58,405 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 395 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 2475 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 7996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 2475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4986 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:58,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 3672 Invalid, 7996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 2475 Invalid, 0 Unknown, 4986 Unchecked, 1.5s Time] [2021-12-06 23:46:58,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-12-06 23:46:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 476. [2021-12-06 23:46:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 327 states have (on average 1.1957186544342508) internal successors, (391), 333 states have internal predecessors, (391), 107 states have call successors, (107), 28 states have call predecessors, (107), 40 states have return successors, (199), 114 states have call predecessors, (199), 105 states have call successors, (199) [2021-12-06 23:46:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 697 transitions. [2021-12-06 23:46:58,432 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 697 transitions. Word has length 274 [2021-12-06 23:46:58,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:58,433 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 697 transitions. [2021-12-06 23:46:58,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.785714285714286) internal successors, (134), 27 states have internal predecessors, (134), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2021-12-06 23:46:58,433 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 697 transitions. [2021-12-06 23:46:58,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-12-06 23:46:58,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:58,436 INFO L514 BasicCegarLoop]: trace histogram [7, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:58,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 23:46:58,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 23:46:58,636 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:58,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:58,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1526744132, now seen corresponding path program 1 times [2021-12-06 23:46:58,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:58,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135581678] [2021-12-06 23:46:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:58,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:58,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:46:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:58,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 23:46:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:58,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:46:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:58,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:46:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:58,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:46:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:58,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:46:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:58,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:46:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:58,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:46:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:58,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:46:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:46:58,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:58,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135581678] [2021-12-06 23:46:58,815 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 23:46:58,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528724487] [2021-12-06 23:46:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:58,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:58,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:58,816 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:58,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 23:46:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:59,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 3398 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:46:59,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-12-06 23:46:59,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:46:59,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528724487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:59,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:59,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:46:59,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127201971] [2021-12-06 23:46:59,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:59,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:46:59,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:59,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:46:59,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:46:59,426 INFO L87 Difference]: Start difference. First operand 476 states and 697 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 23:46:59,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:59,447 INFO L93 Difference]: Finished difference Result 928 states and 1362 transitions. [2021-12-06 23:46:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:46:59,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 286 [2021-12-06 23:46:59,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:59,453 INFO L225 Difference]: With dead ends: 928 [2021-12-06 23:46:59,454 INFO L226 Difference]: Without dead ends: 470 [2021-12-06 23:46:59,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:46:59,466 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 0 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:59,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 833 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:46:59,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-12-06 23:46:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-12-06 23:46:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 324 states have (on average 1.1944444444444444) internal successors, (387), 329 states have internal predecessors, (387), 105 states have call successors, (105), 28 states have call predecessors, (105), 39 states have return successors, (194), 112 states have call predecessors, (194), 103 states have call successors, (194) [2021-12-06 23:46:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 686 transitions. [2021-12-06 23:46:59,487 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 686 transitions. Word has length 286 [2021-12-06 23:46:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:59,488 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 686 transitions. [2021-12-06 23:46:59,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 23:46:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 686 transitions. [2021-12-06 23:46:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-06 23:46:59,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:59,490 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 23:46:59,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 23:46:59,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:59,691 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:59,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:59,693 INFO L85 PathProgramCache]: Analyzing trace with hash -784412220, now seen corresponding path program 1 times [2021-12-06 23:46:59,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:59,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88089845] [2021-12-06 23:46:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:59,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:59,775 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:59,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390261920] [2021-12-06 23:46:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:59,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:59,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:59,776 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:59,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 23:47:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:00,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 3444 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 23:47:00,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:47:00,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-06 23:47:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 96 proven. 13 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2021-12-06 23:47:00,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:47:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2021-12-06 23:47:01,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:47:01,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88089845] [2021-12-06 23:47:01,467 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:47:01,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390261920] [2021-12-06 23:47:01,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390261920] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:47:01,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:47:01,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 27 [2021-12-06 23:47:01,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891236434] [2021-12-06 23:47:01,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:47:01,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 23:47:01,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:47:01,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 23:47:01,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2021-12-06 23:47:01,469 INFO L87 Difference]: Start difference. First operand 470 states and 686 transitions. Second operand has 15 states, 14 states have (on average 7.785714285714286) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (25), 5 states have call predecessors, (25), 1 states have call successors, (25) [2021-12-06 23:47:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:47:01,603 INFO L93 Difference]: Finished difference Result 896 states and 1337 transitions. [2021-12-06 23:47:01,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:47:01,604 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.785714285714286) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (25), 5 states have call predecessors, (25), 1 states have call successors, (25) Word has length 298 [2021-12-06 23:47:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:47:01,607 INFO L225 Difference]: With dead ends: 896 [2021-12-06 23:47:01,607 INFO L226 Difference]: Without dead ends: 480 [2021-12-06 23:47:01,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 569 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=803, Unknown=0, NotChecked=0, Total=870 [2021-12-06 23:47:01,610 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 17 mSDsluCounter, 5616 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6052 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:47:01,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 6052 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:47:01,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-06 23:47:01,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2021-12-06 23:47:01,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 317 states have (on average 1.1892744479495267) internal successors, (377), 319 states have internal predecessors, (377), 105 states have call successors, (105), 28 states have call predecessors, (105), 38 states have return successors, (189), 114 states have call predecessors, (189), 103 states have call successors, (189) [2021-12-06 23:47:01,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 671 transitions. [2021-12-06 23:47:01,633 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 671 transitions. Word has length 298 [2021-12-06 23:47:01,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:47:01,633 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 671 transitions. [2021-12-06 23:47:01,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.785714285714286) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (25), 5 states have call predecessors, (25), 1 states have call successors, (25) [2021-12-06 23:47:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 671 transitions. [2021-12-06 23:47:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-12-06 23:47:01,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:47:01,636 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 23:47:01,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 23:47:01,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-12-06 23:47:01,836 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:47:01,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:47:01,837 INFO L85 PathProgramCache]: Analyzing trace with hash -589910361, now seen corresponding path program 1 times [2021-12-06 23:47:01,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:47:01,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67657313] [2021-12-06 23:47:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:01,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:47:01,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:47:01,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339992870] [2021-12-06 23:47:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:01,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:47:01,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:47:01,889 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:47:01,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 23:47:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:02,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 3432 conjuncts, 221 conjunts are in the unsatisfiable core [2021-12-06 23:47:02,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:47:02,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:47:02,958 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 23:47:02,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 22 [2021-12-06 23:47:39,597 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-06 23:47:39,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 24 [2021-12-06 23:47:39,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:47:57,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:47:57,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:47:57,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:47:57,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:47:57,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:47:57,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:47:57,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 45 [2021-12-06 23:47:57,336 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 23:47:57,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:47:57,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:47:57,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:47:57,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:47:57,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 34 treesize of output 36 [2021-12-06 23:47:58,097 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_317| Int) (v_ArrVal_3622 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_317|) 0) (= (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_317| v_ArrVal_3622) |c_#valid|))) (exists ((v_ArrVal_3623 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3623)))) is different from true [2021-12-06 23:48:11,222 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3625 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3625))) is different from true [2021-12-06 23:48:29,437 INFO L354 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2021-12-06 23:48:29,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 231 treesize of output 239 [2021-12-06 23:48:29,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:48:29,474 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:48:29,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 88 treesize of output 88 [2021-12-06 23:48:29,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 18 [2021-12-06 23:48:29,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 25 [2021-12-06 23:48:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 253 proven. 35 refuted. 4 times theorem prover too weak. 148 trivial. 3 not checked. [2021-12-06 23:48:35,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:48:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2021-12-06 23:48:37,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:48:37,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67657313] [2021-12-06 23:48:37,807 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:48:37,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339992870] [2021-12-06 23:48:37,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339992870] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:48:37,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:48:37,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 11] total 68 [2021-12-06 23:48:37,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575133802] [2021-12-06 23:48:37,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:48:37,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-12-06 23:48:37,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:48:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-12-06 23:48:37,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=3999, Unknown=39, NotChecked=258, Total=4556 [2021-12-06 23:48:37,810 INFO L87 Difference]: Start difference. First operand 462 states and 671 transitions. Second operand has 68 states, 56 states have (on average 3.8035714285714284) internal successors, (213), 53 states have internal predecessors, (213), 21 states have call successors, (51), 11 states have call predecessors, (51), 18 states have return successors, (48), 19 states have call predecessors, (48), 20 states have call successors, (48) [2021-12-06 23:49:15,854 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_317| Int) (v_ArrVal_3622 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_317|) 0) (= (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_317| v_ArrVal_3622) |c_#valid|))) (exists ((v_ArrVal_3623 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3623))) (exists ((v_ArrVal_3625 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3625)))) is different from true [2021-12-06 23:49:19,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:49:19,202 INFO L93 Difference]: Finished difference Result 923 states and 1340 transitions. [2021-12-06 23:49:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-06 23:49:19,203 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 56 states have (on average 3.8035714285714284) internal successors, (213), 53 states have internal predecessors, (213), 21 states have call successors, (51), 11 states have call predecessors, (51), 18 states have return successors, (48), 19 states have call predecessors, (48), 20 states have call successors, (48) Word has length 280 [2021-12-06 23:49:19,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:49:19,206 INFO L225 Difference]: With dead ends: 923 [2021-12-06 23:49:19,206 INFO L226 Difference]: Without dead ends: 529 [2021-12-06 23:49:19,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 483 SyntacticMatches, 13 SemanticMatches, 84 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2466 ImplicationChecksByTransitivity, 124.5s TimeCoverageRelationStatistics Valid=389, Invalid=6370, Unknown=59, NotChecked=492, Total=7310 [2021-12-06 23:49:19,209 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 129 mSDsluCounter, 8216 mSDsCounter, 0 mSdLazyCounter, 3377 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 8605 SdHoareTripleChecker+Invalid, 9678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6171 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:49:19,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 8605 Invalid, 9678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3377 Invalid, 0 Unknown, 6171 Unchecked, 2.3s Time] [2021-12-06 23:49:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-12-06 23:49:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 485. [2021-12-06 23:49:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 332 states have (on average 1.1837349397590362) internal successors, (393), 335 states have internal predecessors, (393), 109 states have call successors, (109), 31 states have call predecessors, (109), 42 states have return successors, (196), 118 states have call predecessors, (196), 107 states have call successors, (196) [2021-12-06 23:49:19,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 698 transitions. [2021-12-06 23:49:19,232 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 698 transitions. Word has length 280 [2021-12-06 23:49:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:49:19,232 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 698 transitions. [2021-12-06 23:49:19,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 56 states have (on average 3.8035714285714284) internal successors, (213), 53 states have internal predecessors, (213), 21 states have call successors, (51), 11 states have call predecessors, (51), 18 states have return successors, (48), 19 states have call predecessors, (48), 20 states have call successors, (48) [2021-12-06 23:49:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 698 transitions. [2021-12-06 23:49:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-12-06 23:49:19,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:49:19,234 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:49:19,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-06 23:49:19,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:49:19,435 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:49:19,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:49:19,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1157723833, now seen corresponding path program 1 times [2021-12-06 23:49:19,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:49:19,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70076085] [2021-12-06 23:49:19,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:49:19,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:49:19,484 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:49:19,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016056278] [2021-12-06 23:49:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:49:19,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:49:19,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:49:19,485 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:49:19,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 23:49:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:20,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 3463 conjuncts, 98 conjunts are in the unsatisfiable core [2021-12-06 23:49:20,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:49:24,738 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3955 Int) (v_ArrVal_3953 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3955)) |c_#memory_$Pointer$.base|) (= |c_#memory_$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_3953))))) is different from true [2021-12-06 23:50:11,590 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_ArrVal_3953 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (not (= (select (select (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3953)) |c_aws_priority_queue_is_valid_#in~queue#1.base|) (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) 0))) (exists ((v_ArrVal_3955 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (not (= (select (select (store |c_old(#memory_$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|) 0 v_ArrVal_3955)) |c_aws_priority_queue_is_valid_#in~queue#1.base|) (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) 0)))) is different from true [2021-12-06 23:50:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 291 proven. 59 refuted. 3 times theorem prover too weak. 76 trivial. 20 not checked. [2021-12-06 23:50:11,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:50:14,027 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3976 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_199| Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_199| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_199|) 0 v_ArrVal_3976)) c_s_sift_up_~queue.base) (+ 40 c_s_sift_up_~queue.offset)) 0)) (forall ((v_ArrVal_3975 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_199| Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_199| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_199|) 0 v_ArrVal_3975)) c_s_sift_up_~queue.base) (+ 40 c_s_sift_up_~queue.offset)) 0))) is different from false [2021-12-06 23:50:14,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:14,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70076085] [2021-12-06 23:50:14,030 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:50:14,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016056278] [2021-12-06 23:50:14,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016056278] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:50:14,030 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:50:14,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-12-06 23:50:14,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724003380] [2021-12-06 23:50:14,030 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 23:50:14,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:50:14,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:14,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:50:14,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=432, Unknown=17, NotChecked=132, Total=650 [2021-12-06 23:50:14,031 INFO L87 Difference]: Start difference. First operand 485 states and 698 transitions. Second operand has 25 states, 23 states have (on average 7.695652173913044) internal successors, (177), 24 states have internal predecessors, (177), 13 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (34), 10 states have call predecessors, (34), 13 states have call successors, (34) [2021-12-06 23:51:43,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:51:43,559 INFO L93 Difference]: Finished difference Result 1367 states and 2104 transitions. [2021-12-06 23:51:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-06 23:51:43,560 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 7.695652173913044) internal successors, (177), 24 states have internal predecessors, (177), 13 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (34), 10 states have call predecessors, (34), 13 states have call successors, (34) Word has length 293 [2021-12-06 23:51:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:51:43,567 INFO L225 Difference]: With dead ends: 1367 [2021-12-06 23:51:43,567 INFO L226 Difference]: Without dead ends: 1001 [2021-12-06 23:51:43,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 139.9s TimeCoverageRelationStatistics Valid=214, Invalid=1378, Unknown=60, NotChecked=240, Total=1892 [2021-12-06 23:51:43,570 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 415 mSDsluCounter, 5629 mSDsCounter, 0 mSdLazyCounter, 4571 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 6206 SdHoareTripleChecker+Invalid, 8589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 4571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3824 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:51:43,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 6206 Invalid, 8589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 4571 Invalid, 0 Unknown, 3824 Unchecked, 2.6s Time] [2021-12-06 23:51:43,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-12-06 23:51:43,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 841. [2021-12-06 23:51:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 590 states have (on average 1.188135593220339) internal successors, (701), 597 states have internal predecessors, (701), 184 states have call successors, (184), 38 states have call predecessors, (184), 65 states have return successors, (416), 205 states have call predecessors, (416), 182 states have call successors, (416) [2021-12-06 23:51:43,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1301 transitions. [2021-12-06 23:51:43,631 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1301 transitions. Word has length 293 [2021-12-06 23:51:43,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:51:43,631 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1301 transitions. [2021-12-06 23:51:43,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 7.695652173913044) internal successors, (177), 24 states have internal predecessors, (177), 13 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (34), 10 states have call predecessors, (34), 13 states have call successors, (34) [2021-12-06 23:51:43,632 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1301 transitions. [2021-12-06 23:51:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-12-06 23:51:43,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:51:43,635 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:43,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 23:51:43,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:43,836 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:51:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2009316169, now seen corresponding path program 1 times [2021-12-06 23:51:43,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:43,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000177369] [2021-12-06 23:51:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:43,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:43,889 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:51:43,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877911713] [2021-12-06 23:51:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:43,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:43,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:51:43,891 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:51:43,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 23:51:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:44,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 3421 conjuncts, 235 conjunts are in the unsatisfiable core [2021-12-06 23:51:44,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:51:46,728 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4166 Int) (v_ArrVal_4163 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4163))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4166)) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 23:51:48,750 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4166 Int) (v_ArrVal_4163 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4163))) (= |c_#memory_$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|) 0 v_ArrVal_4166))))) is different from true [2021-12-06 23:51:56,948 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4170 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4169 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4170))) (= |c_#memory_$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_4169))))) is different from true [2021-12-06 23:52:42,534 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-12-06 23:52:42,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 35 treesize of output 18 [2021-12-06 23:52:42,539 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-12-06 23:52:42,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 35 treesize of output 18 [2021-12-06 23:52:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 311 proven. 13 refuted. 0 times theorem prover too weak. 105 trivial. 23 not checked. [2021-12-06 23:52:42,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:52:50,923 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_4193 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_212| Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_212| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_212|) 0 v_ArrVal_4193)) c_s_sift_up_~queue.base) (+ c_s_sift_up_~queue.offset 80)) 0)) (forall ((v_ArrVal_4194 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_212| Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_212| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_212|) 0 v_ArrVal_4194)) c_s_sift_up_~queue.base) (+ c_s_sift_up_~queue.offset 80)) 0))) is different from false [2021-12-06 23:52:50,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:52:50,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000177369] [2021-12-06 23:52:50,925 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:52:50,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877911713] [2021-12-06 23:52:50,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877911713] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:52:50,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:52:50,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-12-06 23:52:50,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13663934] [2021-12-06 23:52:50,925 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 23:52:50,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 23:52:50,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:52:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 23:52:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=736, Unknown=17, NotChecked=228, Total=1056 [2021-12-06 23:52:50,927 INFO L87 Difference]: Start difference. First operand 841 states and 1301 transitions. Second operand has 29 states, 25 states have (on average 6.76) internal successors, (169), 26 states have internal predecessors, (169), 12 states have call successors, (34), 4 states have call predecessors, (34), 8 states have return successors, (32), 9 states have call predecessors, (32), 11 states have call successors, (32) [2021-12-06 23:52:53,174 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4166 Int) (v_ArrVal_4163 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4163))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4166)) |c_#memory_$Pointer$.base|))) (exists ((v_ArrVal_4170 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4169 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4170))) (= |c_#memory_$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_4169)))))) is different from true [2021-12-06 23:53:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:53:46,531 INFO L93 Difference]: Finished difference Result 1891 states and 3175 transitions. [2021-12-06 23:53:46,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 23:53:46,532 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 6.76) internal successors, (169), 26 states have internal predecessors, (169), 12 states have call successors, (34), 4 states have call predecessors, (34), 8 states have return successors, (32), 9 states have call predecessors, (32), 11 states have call successors, (32) Word has length 289 [2021-12-06 23:53:46,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:53:46,542 INFO L225 Difference]: With dead ends: 1891 [2021-12-06 23:53:46,542 INFO L226 Difference]: Without dead ends: 1272 [2021-12-06 23:53:46,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 118.4s TimeCoverageRelationStatistics Valid=159, Invalid=1631, Unknown=36, NotChecked=430, Total=2256 [2021-12-06 23:53:46,547 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 360 mSDsluCounter, 5837 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 6366 SdHoareTripleChecker+Invalid, 10075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6520 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:53:46,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 6366 Invalid, 10075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 3330 Invalid, 0 Unknown, 6520 Unchecked, 1.8s Time] [2021-12-06 23:53:46,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-12-06 23:53:46,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1092. [2021-12-06 23:53:46,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 769 states have (on average 1.1963589076723018) internal successors, (920), 778 states have internal predecessors, (920), 245 states have call successors, (245), 39 states have call predecessors, (245), 76 states have return successors, (685), 274 states have call predecessors, (685), 243 states have call successors, (685) [2021-12-06 23:53:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1850 transitions. [2021-12-06 23:53:46,621 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1850 transitions. Word has length 289 [2021-12-06 23:53:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:53:46,622 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 1850 transitions. [2021-12-06 23:53:46,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 6.76) internal successors, (169), 26 states have internal predecessors, (169), 12 states have call successors, (34), 4 states have call predecessors, (34), 8 states have return successors, (32), 9 states have call predecessors, (32), 11 states have call successors, (32) [2021-12-06 23:53:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1850 transitions. [2021-12-06 23:53:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-06 23:53:46,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:53:46,627 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:46,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 23:53:46,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:46,828 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:53:46,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash -552227379, now seen corresponding path program 1 times [2021-12-06 23:53:46,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:46,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879601750] [2021-12-06 23:53:46,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:46,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:46,902 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:53:46,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038001312] [2021-12-06 23:53:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:46,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:46,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:46,903 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:46,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 23:53:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:47,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 171 conjunts are in the unsatisfiable core [2021-12-06 23:53:47,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:47,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:53:48,048 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 23:53:48,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-12-06 23:53:48,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:48,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:53:48,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:48,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:54:08,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:08,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:54:08,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:08,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:54:08,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:08,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:54:08,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:08,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:54:08,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:08,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:54:08,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:08,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:54:14,659 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4434 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4434))) (exists ((v_ArrVal_4432 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4432) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4433 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4433)))) is different from true [2021-12-06 23:54:17,368 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4436 Int)) (= |c_#memory_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_4436)))) is different from true [2021-12-06 23:54:19,377 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4436 Int)) (= |c_#memory_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_4436)))) is different from true [2021-12-06 23:54:19,917 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-06 23:54:19,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2021-12-06 23:54:19,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 8 treesize of output 7 [2021-12-06 23:54:19,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2021-12-06 23:54:19,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 16 [2021-12-06 23:54:19,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:54:19,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2021-12-06 23:54:19,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 16 [2021-12-06 23:54:20,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 11 [2021-12-06 23:54:20,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:54:20,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:20,232 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-12-06 23:54:20,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 86 [2021-12-06 23:54:20,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:20,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 23:54:20,254 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:54:20,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:54:20,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:20,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2021-12-06 23:54:20,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:20,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 46 [2021-12-06 23:54:20,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:20,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 1 [2021-12-06 23:54:20,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 47 treesize of output 41 [2021-12-06 23:54:20,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:54:20,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 35 [2021-12-06 23:54:20,373 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 23:54:20,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-06 23:54:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 241 proven. 48 refuted. 0 times theorem prover too weak. 157 trivial. 10 not checked. [2021-12-06 23:54:20,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:54:24,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:24,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879601750] [2021-12-06 23:54:24,102 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:54:24,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038001312] [2021-12-06 23:54:24,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038001312] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:54:24,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:54:24,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2021-12-06 23:54:24,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963134407] [2021-12-06 23:54:24,103 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 23:54:24,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 23:54:24,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 23:54:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1955, Unknown=48, NotChecked=276, Total=2450 [2021-12-06 23:54:24,105 INFO L87 Difference]: Start difference. First operand 1092 states and 1850 transitions. Second operand has 43 states, 38 states have (on average 3.6052631578947367) internal successors, (137), 37 states have internal predecessors, (137), 17 states have call successors, (29), 10 states have call predecessors, (29), 14 states have return successors, (27), 12 states have call predecessors, (27), 17 states have call successors, (27) [2021-12-06 23:54:38,041 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-12-06 23:54:38,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-12-06 23:54:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:54:38,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 385 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 46.5s TimeCoverageRelationStatistics Valid=240, Invalid=2688, Unknown=54, NotChecked=324, Total=3306 [2021-12-06 23:54:38,043 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:38,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 199 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 196 Invalid, 0 Unknown, 323 Unchecked, 0.2s Time] [2021-12-06 23:54:38,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 23:54:38,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 23:54:38,245 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:260) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1082) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:961) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:237) ... 49 more [2021-12-06 23:54:38,250 INFO L158 Benchmark]: Toolchain (without parser) took 493757.17ms. Allocated memory was 117.4MB in the beginning and 325.1MB in the end (delta: 207.6MB). Free memory was 90.5MB in the beginning and 87.7MB in the end (delta: 2.8MB). Peak memory consumption was 210.6MB. Max. memory is 16.1GB. [2021-12-06 23:54:38,250 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:54:38,250 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1844.08ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 90.5MB in the beginning and 77.2MB in the end (delta: 13.3MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. [2021-12-06 23:54:38,250 INFO L158 Benchmark]: Boogie Procedure Inliner took 152.79ms. Allocated memory is still 155.2MB. Free memory was 77.2MB in the beginning and 107.9MB in the end (delta: -30.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 23:54:38,251 INFO L158 Benchmark]: Boogie Preprocessor took 67.09ms. Allocated memory is still 155.2MB. Free memory was 107.9MB in the beginning and 100.8MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 23:54:38,251 INFO L158 Benchmark]: RCFGBuilder took 1058.49ms. Allocated memory is still 155.2MB. Free memory was 100.8MB in the beginning and 85.2MB in the end (delta: 15.6MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2021-12-06 23:54:38,251 INFO L158 Benchmark]: TraceAbstraction took 490627.59ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 84.2MB in the beginning and 87.7MB in the end (delta: -3.5MB). Peak memory consumption was 165.7MB. Max. memory is 16.1GB. [2021-12-06 23:54:38,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1844.08ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 90.5MB in the beginning and 77.2MB in the end (delta: 13.3MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 152.79ms. Allocated memory is still 155.2MB. Free memory was 77.2MB in the beginning and 107.9MB in the end (delta: -30.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.09ms. Allocated memory is still 155.2MB. Free memory was 107.9MB in the beginning and 100.8MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1058.49ms. Allocated memory is still 155.2MB. Free memory was 100.8MB in the beginning and 85.2MB in the end (delta: 15.6MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. * TraceAbstraction took 490627.59ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 84.2MB in the beginning and 87.7MB in the end (delta: -3.5MB). Peak memory consumption was 165.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa --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 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:54:39,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:54:39,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:54:39,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:54:39,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:54:39,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:54:39,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:54:39,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:54:39,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:54:39,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:54:39,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:54:39,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:54:39,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:54:39,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:54:39,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:54:39,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:54:39,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:54:39,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:54:39,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:54:39,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:54:39,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:54:39,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:54:39,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:54:39,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:54:39,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:54:39,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:54:39,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:54:39,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:54:39,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:54:39,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:54:39,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:54:39,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:54:39,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:54:39,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:54:39,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:54:39,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:54:39,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:54:39,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:54:39,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:54:39,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:54:39,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:54:39,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-06 23:54:39,640 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:54:39,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:54:39,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:54:39,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:54:39,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:54:39,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:54:39,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:54:39,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:54:39,643 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:54:39,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:54:39,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:54:39,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:54:39,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:54:39,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:54:39,644 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:54:39,644 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 23:54:39,644 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 23:54:39,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:54:39,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:54:39,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:54:39,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:54:39,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:54:39,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:54:39,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:54:39,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:54:39,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:54:39,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:54:39,646 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 23:54:39,647 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 23:54:39,647 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:54:39,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:54:39,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:54:39,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:54:39,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 23:54:39,648 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2021-12-06 23:54:39,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:54:39,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:54:39,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:54:39,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:54:39,895 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:54:39,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-12-06 23:54:39,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/data/ae34b633e/0433199e33a2468e98c0faf3b6c89569/FLAG4f7360e6a [2021-12-06 23:54:40,605 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:54:40,606 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-12-06 23:54:40,634 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/data/ae34b633e/0433199e33a2468e98c0faf3b6c89569/FLAG4f7360e6a [2021-12-06 23:54:40,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/data/ae34b633e/0433199e33a2468e98c0faf3b6c89569 [2021-12-06 23:54:40,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:54:40,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:54:40,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:54:40,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:54:41,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:54:41,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:54:40" (1/1) ... [2021-12-06 23:54:41,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df8b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:41, skipping insertion in model container [2021-12-06 23:54:41,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:54:40" (1/1) ... [2021-12-06 23:54:41,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:54:41,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:54:41,280 WARN L230 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_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-12-06 23:54:41,285 WARN L230 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_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-12-06 23:54:41,905 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,905 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,907 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,919 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,919 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:41,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,226 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 23:54:42,227 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 23:54:42,227 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 23:54:42,228 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 23:54:42,229 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 23:54:42,230 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 23:54:42,230 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 23:54:42,231 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 23:54:42,231 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 23:54:42,232 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 23:54:42,365 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 23:54:42,387 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,388 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,393 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,466 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,466 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,466 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,467 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,467 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,467 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,472 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,472 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,472 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,473 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,476 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,476 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,485 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:54:42,528 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 23:54:42,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:54:42,620 WARN L230 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_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-12-06 23:54:42,620 WARN L230 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_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-12-06 23:54:42,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,646 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,646 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,654 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,654 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,654 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,678 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 23:54:42,678 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 23:54:42,679 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 23:54:42,679 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 23:54:42,680 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 23:54:42,680 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 23:54:42,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 23:54:42,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 23:54:42,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 23:54:42,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 23:54:42,696 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 23:54:42,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,737 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,737 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,738 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,738 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,738 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,742 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,743 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,743 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,743 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,746 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,746 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,751 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:54:42,774 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:54:42,787 WARN L230 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_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-12-06 23:54:42,788 WARN L230 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_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-12-06 23:54:42,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,819 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,819 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,824 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,825 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,826 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,826 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,827 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,827 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,828 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,828 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,855 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 23:54:42,856 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 23:54:42,856 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 23:54:42,857 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 23:54:42,858 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 23:54:42,858 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 23:54:42,858 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 23:54:42,859 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 23:54:42,859 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 23:54:42,860 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 23:54:42,886 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 23:54:42,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,899 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,904 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,925 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,925 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,926 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,926 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,930 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,933 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,933 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,939 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,939 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 23:54:42,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:54:43,161 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:54:43,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43 WrapperNode [2021-12-06 23:54:43,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:54:43,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:54:43,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:54:43,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:54:43,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43" (1/1) ... [2021-12-06 23:54:43,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43" (1/1) ... [2021-12-06 23:54:43,282 INFO L137 Inliner]: procedures = 717, calls = 1887, calls flagged for inlining = 61, calls inlined = 14, statements flattened = 809 [2021-12-06 23:54:43,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:54:43,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:54:43,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:54:43,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:54:43,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43" (1/1) ... [2021-12-06 23:54:43,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43" (1/1) ... [2021-12-06 23:54:43,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43" (1/1) ... [2021-12-06 23:54:43,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43" (1/1) ... [2021-12-06 23:54:43,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43" (1/1) ... [2021-12-06 23:54:43,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43" (1/1) ... [2021-12-06 23:54:43,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43" (1/1) ... [2021-12-06 23:54:43,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:54:43,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:54:43,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:54:43,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:54:43,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43" (1/1) ... [2021-12-06 23:54:43,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:54:43,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:54:43,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:54:43,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:54:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-06 23:54:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-06 23:54:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-06 23:54:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-06 23:54:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:54:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-06 23:54:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-06 23:54:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-06 23:54:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-06 23:54:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-06 23:54:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-06 23:54:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 23:54:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-06 23:54:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-06 23:54:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-12-06 23:54:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-12-06 23:54:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-06 23:54:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-06 23:54:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 23:54:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 23:54:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-06 23:54:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-06 23:54:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:54:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:54:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:54:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-12-06 23:54:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-12-06 23:54:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-06 23:54:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-06 23:54:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:54:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:54:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-06 23:54:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-06 23:54:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-06 23:54:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-06 23:54:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-06 23:54:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-06 23:54:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-06 23:54:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-06 23:54:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-06 23:54:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-06 23:54:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-06 23:54:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-06 23:54:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 23:54:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 23:54:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-06 23:54:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-06 23:54:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:54:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:54:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-06 23:54:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-06 23:54:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:54:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-06 23:54:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-06 23:54:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-06 23:54:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-06 23:54:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-06 23:54:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-06 23:54:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-06 23:54:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-06 23:54:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-06 23:54:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-06 23:54:43,647 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:54:43,649 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:54:45,324 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:54:45,331 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:54:45,331 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-06 23:54:45,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:54:45 BoogieIcfgContainer [2021-12-06 23:54:45,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:54:45,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:54:45,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:54:45,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:54:45,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:54:40" (1/3) ... [2021-12-06 23:54:45,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7501b949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:54:45, skipping insertion in model container [2021-12-06 23:54:45,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:43" (2/3) ... [2021-12-06 23:54:45,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7501b949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:54:45, skipping insertion in model container [2021-12-06 23:54:45,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:54:45" (3/3) ... [2021-12-06 23:54:45,338 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2021-12-06 23:54:45,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:54:45,342 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 23:54:45,376 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:54:45,381 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:54:45,381 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 23:54:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 193 states have (on average 1.2590673575129534) internal successors, (243), 196 states have internal predecessors, (243), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-06 23:54:45,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 23:54:45,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:45,409 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-12-06 23:54:45,409 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:45,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:45,413 INFO L85 PathProgramCache]: Analyzing trace with hash 320525751, now seen corresponding path program 1 times [2021-12-06 23:54:45,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:54:45,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97574741] [2021-12-06 23:54:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:45,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:54:45,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:54:45,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:54:45,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 23:54:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:45,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 23:54:45,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:54:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-06 23:54:46,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:54:46,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:54:46,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97574741] [2021-12-06 23:54:46,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97574741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:46,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:46,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:54:46,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130008446] [2021-12-06 23:54:46,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:46,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:54:46,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:54:46,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:54:46,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:54:46,193 INFO L87 Difference]: Start difference. First operand has 314 states, 193 states have (on average 1.2590673575129534) internal successors, (243), 196 states have internal predecessors, (243), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 23:54:46,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:46,258 INFO L93 Difference]: Finished difference Result 615 states and 926 transitions. [2021-12-06 23:54:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:54:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 104 [2021-12-06 23:54:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:46,268 INFO L225 Difference]: With dead ends: 615 [2021-12-06 23:54:46,268 INFO L226 Difference]: Without dead ends: 307 [2021-12-06 23:54:46,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:54:46,277 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:46,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:54:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-12-06 23:54:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-12-06 23:54:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 188 states have (on average 1.2234042553191489) internal successors, (230), 190 states have internal predecessors, (230), 95 states have call successors, (95), 23 states have call predecessors, (95), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2021-12-06 23:54:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 418 transitions. [2021-12-06 23:54:46,333 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 418 transitions. Word has length 104 [2021-12-06 23:54:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:46,334 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 418 transitions. [2021-12-06 23:54:46,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 23:54:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 418 transitions. [2021-12-06 23:54:46,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 23:54:46,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:46,338 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-12-06 23:54:46,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:54:46,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:54:46,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:46,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:46,542 INFO L85 PathProgramCache]: Analyzing trace with hash -225956610, now seen corresponding path program 1 times [2021-12-06 23:54:46,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:54:46,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686726892] [2021-12-06 23:54:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:46,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:54:46,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:54:46,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:54:46,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 23:54:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:47,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:54:47,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:54:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-06 23:54:47,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:54:47,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:54:47,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686726892] [2021-12-06 23:54:47,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686726892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:47,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:47,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:54:47,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681939268] [2021-12-06 23:54:47,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:47,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:54:47,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:54:47,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:54:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:54:47,371 INFO L87 Difference]: Start difference. First operand 307 states and 418 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 23:54:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:47,562 INFO L93 Difference]: Finished difference Result 580 states and 796 transitions. [2021-12-06 23:54:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:54:47,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 104 [2021-12-06 23:54:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:47,568 INFO L225 Difference]: With dead ends: 580 [2021-12-06 23:54:47,568 INFO L226 Difference]: Without dead ends: 309 [2021-12-06 23:54:47,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:54:47,570 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 46 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:47,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 1538 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:54:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-06 23:54:47,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-12-06 23:54:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 189 states have (on average 1.2222222222222223) internal successors, (231), 192 states have internal predecessors, (231), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (97), 93 states have call predecessors, (97), 93 states have call successors, (97) [2021-12-06 23:54:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 423 transitions. [2021-12-06 23:54:47,595 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 423 transitions. Word has length 104 [2021-12-06 23:54:47,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:47,596 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 423 transitions. [2021-12-06 23:54:47,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 23:54:47,596 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 423 transitions. [2021-12-06 23:54:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 23:54:47,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:47,598 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2021-12-06 23:54:47,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 23:54:47,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:54:47,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:47,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:47,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1037784090, now seen corresponding path program 1 times [2021-12-06 23:54:47,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:54:47,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021601315] [2021-12-06 23:54:47,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:47,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:54:47,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:54:47,802 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:54:47,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 23:54:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:48,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:54:48,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:54:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-06 23:54:48,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:54:48,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:54:48,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021601315] [2021-12-06 23:54:48,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021601315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:48,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:48,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:48,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888364760] [2021-12-06 23:54:48,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:48,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:48,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:54:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:48,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:48,514 INFO L87 Difference]: Start difference. First operand 309 states and 423 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 23:54:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:48,960 INFO L93 Difference]: Finished difference Result 603 states and 843 transitions. [2021-12-06 23:54:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:54:48,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 112 [2021-12-06 23:54:48,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:48,964 INFO L225 Difference]: With dead ends: 603 [2021-12-06 23:54:48,964 INFO L226 Difference]: Without dead ends: 330 [2021-12-06 23:54:48,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:54:48,966 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 98 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:48,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 2220 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:54:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-06 23:54:48,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2021-12-06 23:54:48,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 205 states have (on average 1.2341463414634146) internal successors, (253), 208 states have internal predecessors, (253), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-06 23:54:48,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 460 transitions. [2021-12-06 23:54:48,987 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 460 transitions. Word has length 112 [2021-12-06 23:54:48,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:48,988 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 460 transitions. [2021-12-06 23:54:48,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 23:54:48,988 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 460 transitions. [2021-12-06 23:54:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 23:54:48,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:48,991 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2021-12-06 23:54:49,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 23:54:49,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:54:49,191 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:49,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:49,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1833433112, now seen corresponding path program 1 times [2021-12-06 23:54:49,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:54:49,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580224582] [2021-12-06 23:54:49,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:49,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:54:49,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:54:49,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:54:49,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 23:54:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:49,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:54:49,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:54:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-06 23:54:50,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:54:50,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:54:50,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580224582] [2021-12-06 23:54:50,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580224582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:50,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:50,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:54:50,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589648081] [2021-12-06 23:54:50,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:50,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:54:50,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:54:50,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:54:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:54:50,118 INFO L87 Difference]: Start difference. First operand 328 states and 460 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 23:54:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:50,424 INFO L93 Difference]: Finished difference Result 628 states and 892 transitions. [2021-12-06 23:54:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:54:50,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 127 [2021-12-06 23:54:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:50,428 INFO L225 Difference]: With dead ends: 628 [2021-12-06 23:54:50,428 INFO L226 Difference]: Without dead ends: 336 [2021-12-06 23:54:50,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:54:50,430 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 69 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:50,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1892 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:54:50,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-12-06 23:54:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 328. [2021-12-06 23:54:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 205 states have (on average 1.2341463414634146) internal successors, (253), 208 states have internal predecessors, (253), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-06 23:54:50,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 460 transitions. [2021-12-06 23:54:50,455 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 460 transitions. Word has length 127 [2021-12-06 23:54:50,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:50,455 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 460 transitions. [2021-12-06 23:54:50,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 23:54:50,456 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 460 transitions. [2021-12-06 23:54:50,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-06 23:54:50,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:50,458 INFO L514 BasicCegarLoop]: trace histogram [7, 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] [2021-12-06 23:54:50,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 23:54:50,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:54:50,659 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:50,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1942839837, now seen corresponding path program 1 times [2021-12-06 23:54:50,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:54:50,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137705456] [2021-12-06 23:54:50,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:50,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:54:50,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:54:50,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:54:50,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 23:54:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:51,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:54:51,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:54:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-06 23:54:51,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:54:51,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:54:51,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137705456] [2021-12-06 23:54:51,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137705456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:51,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:51,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:54:51,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018079856] [2021-12-06 23:54:51,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:51,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:54:51,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:54:51,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:54:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:54:51,687 INFO L87 Difference]: Start difference. First operand 328 states and 460 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-06 23:54:52,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:52,583 INFO L93 Difference]: Finished difference Result 650 states and 921 transitions. [2021-12-06 23:54:52,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:54:52,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 143 [2021-12-06 23:54:52,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:52,588 INFO L225 Difference]: With dead ends: 650 [2021-12-06 23:54:52,588 INFO L226 Difference]: Without dead ends: 358 [2021-12-06 23:54:52,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:54:52,590 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 141 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:52,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 2584 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:54:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-12-06 23:54:52,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 340. [2021-12-06 23:54:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 215 states have (on average 1.241860465116279) internal successors, (267), 218 states have internal predecessors, (267), 98 states have call successors, (98), 24 states have call predecessors, (98), 25 states have return successors, (111), 97 states have call predecessors, (111), 96 states have call successors, (111) [2021-12-06 23:54:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 476 transitions. [2021-12-06 23:54:52,606 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 476 transitions. Word has length 143 [2021-12-06 23:54:52,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:52,606 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 476 transitions. [2021-12-06 23:54:52,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-06 23:54:52,607 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 476 transitions. [2021-12-06 23:54:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 23:54:52,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:52,609 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 23:54:52,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-06 23:54:52,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:54:52,809 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:52,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:52,811 INFO L85 PathProgramCache]: Analyzing trace with hash 501938161, now seen corresponding path program 1 times [2021-12-06 23:54:52,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:54:52,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334356907] [2021-12-06 23:54:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:52,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:54:52,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:54:52,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:54:52,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 23:54:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:53,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:54:53,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:54:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-06 23:54:54,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:54:54,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:54:54,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334356907] [2021-12-06 23:54:54,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334356907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:54,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:54,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:54:54,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104656394] [2021-12-06 23:54:54,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:54,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:54:54,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:54:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:54:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:54:54,404 INFO L87 Difference]: Start difference. First operand 340 states and 476 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 23:54:56,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:56,775 INFO L93 Difference]: Finished difference Result 680 states and 973 transitions. [2021-12-06 23:54:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:54:56,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2021-12-06 23:54:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:56,781 INFO L225 Difference]: With dead ends: 680 [2021-12-06 23:54:56,781 INFO L226 Difference]: Without dead ends: 376 [2021-12-06 23:54:56,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:54:56,783 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 21 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:56,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1949 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 23:54:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-12-06 23:54:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 348. [2021-12-06 23:54:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 223 states have (on average 1.242152466367713) internal successors, (277), 226 states have internal predecessors, (277), 98 states have call successors, (98), 24 states have call predecessors, (98), 25 states have return successors, (111), 97 states have call predecessors, (111), 96 states have call successors, (111) [2021-12-06 23:54:56,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 486 transitions. [2021-12-06 23:54:56,803 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 486 transitions. Word has length 158 [2021-12-06 23:54:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:56,804 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 486 transitions. [2021-12-06 23:54:56,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 23:54:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 486 transitions. [2021-12-06 23:54:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 23:54:56,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:56,807 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 23:54:56,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 23:54:57,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:54:57,008 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:57,009 INFO L85 PathProgramCache]: Analyzing trace with hash 945838835, now seen corresponding path program 1 times [2021-12-06 23:54:57,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:54:57,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164445396] [2021-12-06 23:54:57,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:57,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:54:57,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:54:57,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:54:57,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 23:54:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:57,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:54:57,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:54:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-06 23:54:58,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:54:58,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:54:58,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164445396] [2021-12-06 23:54:58,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164445396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:58,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:58,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:58,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982381595] [2021-12-06 23:54:58,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:58,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:58,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:54:58,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:58,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:58,581 INFO L87 Difference]: Start difference. First operand 348 states and 486 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 23:55:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:01,535 INFO L93 Difference]: Finished difference Result 690 states and 983 transitions. [2021-12-06 23:55:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:55:01,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2021-12-06 23:55:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:01,540 INFO L225 Difference]: With dead ends: 690 [2021-12-06 23:55:01,540 INFO L226 Difference]: Without dead ends: 378 [2021-12-06 23:55:01,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:55:01,542 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 17 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:01,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 2358 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 23:55:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-06 23:55:01,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 352. [2021-12-06 23:55:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 227 states have (on average 1.2378854625550662) internal successors, (281), 230 states have internal predecessors, (281), 98 states have call successors, (98), 24 states have call predecessors, (98), 25 states have return successors, (111), 97 states have call predecessors, (111), 96 states have call successors, (111) [2021-12-06 23:55:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 490 transitions. [2021-12-06 23:55:01,560 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 490 transitions. Word has length 158 [2021-12-06 23:55:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:01,561 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 490 transitions. [2021-12-06 23:55:01,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 23:55:01,561 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 490 transitions. [2021-12-06 23:55:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 23:55:01,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:01,563 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 23:55:01,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 23:55:01,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:01,764 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:01,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:01,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1082747275, now seen corresponding path program 1 times [2021-12-06 23:55:01,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:01,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156201366] [2021-12-06 23:55:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:01,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:01,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:01,775 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:01,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 23:55:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:02,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 23:55:02,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:11,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-12-06 23:55:11,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 23:55:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-06 23:55:12,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:12,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:12,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156201366] [2021-12-06 23:55:12,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156201366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:12,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:12,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 23:55:12,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662028049] [2021-12-06 23:55:12,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:12,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:55:12,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:12,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:55:12,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=86, Unknown=2, NotChecked=0, Total=110 [2021-12-06 23:55:12,531 INFO L87 Difference]: Start difference. First operand 352 states and 490 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-06 23:55:22,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:55:24,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:55:25,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:25,836 INFO L93 Difference]: Finished difference Result 697 states and 985 transitions. [2021-12-06 23:55:25,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:55:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 158 [2021-12-06 23:55:25,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:25,840 INFO L225 Difference]: With dead ends: 697 [2021-12-06 23:55:25,841 INFO L226 Difference]: Without dead ends: 407 [2021-12-06 23:55:25,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=70, Invalid=231, Unknown=5, NotChecked=0, Total=306 [2021-12-06 23:55:25,842 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 88 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:25,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 3395 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 431 Invalid, 2 Unknown, 69 Unchecked, 6.6s Time] [2021-12-06 23:55:25,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-12-06 23:55:25,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 373. [2021-12-06 23:55:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 244 states have (on average 1.2336065573770492) internal successors, (301), 247 states have internal predecessors, (301), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (119), 100 states have call predecessors, (119), 98 states have call successors, (119) [2021-12-06 23:55:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 520 transitions. [2021-12-06 23:55:25,859 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 520 transitions. Word has length 158 [2021-12-06 23:55:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:25,860 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 520 transitions. [2021-12-06 23:55:25,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-06 23:55:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 520 transitions. [2021-12-06 23:55:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 23:55:25,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:25,867 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 23:55:25,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 23:55:26,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:26,067 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1888723571, now seen corresponding path program 1 times [2021-12-06 23:55:26,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:26,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048262912] [2021-12-06 23:55:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:26,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:26,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:26,070 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:26,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 23:55:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:27,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:55:27,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-06 23:55:27,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:27,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:27,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048262912] [2021-12-06 23:55:27,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048262912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:27,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:27,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:55:27,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276096557] [2021-12-06 23:55:27,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:27,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:55:27,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:27,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:55:27,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:55:27,177 INFO L87 Difference]: Start difference. First operand 373 states and 520 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 23:55:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:27,283 INFO L93 Difference]: Finished difference Result 721 states and 1027 transitions. [2021-12-06 23:55:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:55:27,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2021-12-06 23:55:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:27,286 INFO L225 Difference]: With dead ends: 721 [2021-12-06 23:55:27,286 INFO L226 Difference]: Without dead ends: 393 [2021-12-06 23:55:27,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:55:27,288 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 8 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:27,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1706 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:55:27,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-06 23:55:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 381. [2021-12-06 23:55:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 252 states have (on average 1.2301587301587302) internal successors, (310), 255 states have internal predecessors, (310), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (119), 100 states have call predecessors, (119), 98 states have call successors, (119) [2021-12-06 23:55:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 529 transitions. [2021-12-06 23:55:27,304 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 529 transitions. Word has length 158 [2021-12-06 23:55:27,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:27,305 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 529 transitions. [2021-12-06 23:55:27,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 23:55:27,305 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 529 transitions. [2021-12-06 23:55:27,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 23:55:27,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:27,306 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 23:55:27,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 23:55:27,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:27,507 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:27,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1527781988, now seen corresponding path program 1 times [2021-12-06 23:55:27,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:27,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769340427] [2021-12-06 23:55:27,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:27,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:27,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:27,510 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:27,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 23:55:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:28,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:55:28,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 23:55:28,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:28,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:28,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769340427] [2021-12-06 23:55:28,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769340427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:28,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:28,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:55:28,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868787915] [2021-12-06 23:55:28,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:28,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:55:28,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:28,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:55:28,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:55:28,703 INFO L87 Difference]: Start difference. First operand 381 states and 529 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 23:55:29,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:29,016 INFO L93 Difference]: Finished difference Result 690 states and 967 transitions. [2021-12-06 23:55:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:55:29,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 160 [2021-12-06 23:55:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:29,020 INFO L225 Difference]: With dead ends: 690 [2021-12-06 23:55:29,020 INFO L226 Difference]: Without dead ends: 383 [2021-12-06 23:55:29,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:55:29,023 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 98 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:29,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 2254 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:55:29,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-12-06 23:55:29,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2021-12-06 23:55:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 253 states have (on average 1.2292490118577075) internal successors, (311), 257 states have internal predecessors, (311), 100 states have call successors, (100), 25 states have call predecessors, (100), 28 states have return successors, (121), 100 states have call predecessors, (121), 98 states have call successors, (121) [2021-12-06 23:55:29,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 532 transitions. [2021-12-06 23:55:29,044 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 532 transitions. Word has length 160 [2021-12-06 23:55:29,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:29,045 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 532 transitions. [2021-12-06 23:55:29,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 23:55:29,045 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 532 transitions. [2021-12-06 23:55:29,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-06 23:55:29,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:29,047 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 23:55:29,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 23:55:29,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:29,248 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:29,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1195653730, now seen corresponding path program 1 times [2021-12-06 23:55:29,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:29,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966429135] [2021-12-06 23:55:29,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:29,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:29,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:29,252 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:29,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 23:55:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:30,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:55:30,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-06 23:55:31,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:31,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:31,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966429135] [2021-12-06 23:55:31,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966429135] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:31,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:31,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:55:31,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520335951] [2021-12-06 23:55:31,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:31,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:55:31,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:31,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:55:31,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:55:31,040 INFO L87 Difference]: Start difference. First operand 383 states and 532 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 23:55:31,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:31,630 INFO L93 Difference]: Finished difference Result 695 states and 974 transitions. [2021-12-06 23:55:31,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:55:31,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 206 [2021-12-06 23:55:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:31,634 INFO L225 Difference]: With dead ends: 695 [2021-12-06 23:55:31,634 INFO L226 Difference]: Without dead ends: 386 [2021-12-06 23:55:31,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:55:31,636 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 121 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:31,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 2592 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:55:31,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-12-06 23:55:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 384. [2021-12-06 23:55:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 254 states have (on average 1.2283464566929134) internal successors, (312), 258 states have internal predecessors, (312), 100 states have call successors, (100), 25 states have call predecessors, (100), 28 states have return successors, (121), 100 states have call predecessors, (121), 98 states have call successors, (121) [2021-12-06 23:55:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 533 transitions. [2021-12-06 23:55:31,652 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 533 transitions. Word has length 206 [2021-12-06 23:55:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:31,652 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 533 transitions. [2021-12-06 23:55:31,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 23:55:31,653 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 533 transitions. [2021-12-06 23:55:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 23:55:31,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:31,654 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:55:31,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 23:55:31,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:31,855 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash 512750478, now seen corresponding path program 1 times [2021-12-06 23:55:31,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:31,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132864093] [2021-12-06 23:55:31,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:31,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:31,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:31,860 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:31,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 23:55:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:32,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:55:32,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 23:55:33,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:55:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-06 23:55:33,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:33,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132864093] [2021-12-06 23:55:33,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132864093] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:55:33,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:55:33,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-12-06 23:55:33,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321671170] [2021-12-06 23:55:33,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:55:33,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:55:33,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:33,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:55:33,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:55:33,762 INFO L87 Difference]: Start difference. First operand 384 states and 533 transitions. Second operand has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 7 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 7 states have call successors, (26) [2021-12-06 23:55:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:34,538 INFO L93 Difference]: Finished difference Result 727 states and 1016 transitions. [2021-12-06 23:55:34,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:55:34,539 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 7 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 7 states have call successors, (26) Word has length 208 [2021-12-06 23:55:34,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:34,542 INFO L225 Difference]: With dead ends: 727 [2021-12-06 23:55:34,542 INFO L226 Difference]: Without dead ends: 417 [2021-12-06 23:55:34,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:55:34,544 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 153 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:34,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 2884 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 23:55:34,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-12-06 23:55:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 411. [2021-12-06 23:55:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 280 states have (on average 1.2357142857142858) internal successors, (346), 283 states have internal predecessors, (346), 101 states have call successors, (101), 25 states have call predecessors, (101), 28 states have return successors, (122), 102 states have call predecessors, (122), 99 states have call successors, (122) [2021-12-06 23:55:34,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 569 transitions. [2021-12-06 23:55:34,560 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 569 transitions. Word has length 208 [2021-12-06 23:55:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:34,560 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 569 transitions. [2021-12-06 23:55:34,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 7 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 7 states have call successors, (26) [2021-12-06 23:55:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 569 transitions. [2021-12-06 23:55:34,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-12-06 23:55:34,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:34,562 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:55:34,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 23:55:34,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:34,764 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash 601024338, now seen corresponding path program 1 times [2021-12-06 23:55:34,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:34,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78591286] [2021-12-06 23:55:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:34,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:34,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:34,775 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:34,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 23:55:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:36,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:55:36,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-12-06 23:55:37,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:37,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:37,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78591286] [2021-12-06 23:55:37,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78591286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:37,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:37,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:55:37,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12814685] [2021-12-06 23:55:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:37,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:55:37,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:55:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:55:37,024 INFO L87 Difference]: Start difference. First operand 411 states and 569 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:55:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:37,059 INFO L93 Difference]: Finished difference Result 612 states and 834 transitions. [2021-12-06 23:55:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:55:37,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 268 [2021-12-06 23:55:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:37,063 INFO L225 Difference]: With dead ends: 612 [2021-12-06 23:55:37,063 INFO L226 Difference]: Without dead ends: 431 [2021-12-06 23:55:37,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:55:37,064 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 13 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:37,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 841 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:55:37,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-12-06 23:55:37,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 414. [2021-12-06 23:55:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 283 states have (on average 1.2332155477031803) internal successors, (349), 286 states have internal predecessors, (349), 101 states have call successors, (101), 25 states have call predecessors, (101), 28 states have return successors, (122), 102 states have call predecessors, (122), 99 states have call successors, (122) [2021-12-06 23:55:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 572 transitions. [2021-12-06 23:55:37,079 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 572 transitions. Word has length 268 [2021-12-06 23:55:37,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:37,080 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 572 transitions. [2021-12-06 23:55:37,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:55:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 572 transitions. [2021-12-06 23:55:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-12-06 23:55:37,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:37,082 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:55:37,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 23:55:37,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:37,283 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:37,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1755671932, now seen corresponding path program 1 times [2021-12-06 23:55:37,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:37,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437300757] [2021-12-06 23:55:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:37,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:37,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:37,295 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:37,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 23:55:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:38,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 1979 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:55:38,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-06 23:55:39,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:39,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:39,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437300757] [2021-12-06 23:55:39,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437300757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:39,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:39,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 23:55:39,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027642227] [2021-12-06 23:55:39,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:39,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:55:39,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:39,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:55:39,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:55:39,383 INFO L87 Difference]: Start difference. First operand 414 states and 572 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 23:55:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:40,654 INFO L93 Difference]: Finished difference Result 756 states and 1051 transitions. [2021-12-06 23:55:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:55:40,655 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 240 [2021-12-06 23:55:40,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:40,658 INFO L225 Difference]: With dead ends: 756 [2021-12-06 23:55:40,658 INFO L226 Difference]: Without dead ends: 416 [2021-12-06 23:55:40,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:55:40,660 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 193 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:40,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 3258 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 23:55:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-06 23:55:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 384. [2021-12-06 23:55:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 255 states have (on average 1.227450980392157) internal successors, (313), 258 states have internal predecessors, (313), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (117), 100 states have call predecessors, (117), 98 states have call successors, (117) [2021-12-06 23:55:40,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 530 transitions. [2021-12-06 23:55:40,676 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 530 transitions. Word has length 240 [2021-12-06 23:55:40,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:40,676 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 530 transitions. [2021-12-06 23:55:40,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 23:55:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 530 transitions. [2021-12-06 23:55:40,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-06 23:55:40,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:40,679 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:55:40,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 23:55:40,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:40,880 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:40,882 INFO L85 PathProgramCache]: Analyzing trace with hash -140028404, now seen corresponding path program 1 times [2021-12-06 23:55:40,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:40,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407229329] [2021-12-06 23:55:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:40,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:40,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:40,892 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:40,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 23:55:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:42,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 2203 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:55:42,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-12-06 23:55:43,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:43,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:43,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407229329] [2021-12-06 23:55:43,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407229329] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:43,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:43,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:55:43,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825073541] [2021-12-06 23:55:43,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:43,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:55:43,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:55:43,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:55:43,092 INFO L87 Difference]: Start difference. First operand 384 states and 530 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:55:43,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:43,121 INFO L93 Difference]: Finished difference Result 557 states and 757 transitions. [2021-12-06 23:55:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:55:43,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 270 [2021-12-06 23:55:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:43,124 INFO L225 Difference]: With dead ends: 557 [2021-12-06 23:55:43,124 INFO L226 Difference]: Without dead ends: 406 [2021-12-06 23:55:43,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:55:43,125 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 14 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 845 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 [2021-12-06 23:55:43,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 845 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:55:43,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-12-06 23:55:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 386. [2021-12-06 23:55:43,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 257 states have (on average 1.2256809338521402) internal successors, (315), 260 states have internal predecessors, (315), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (117), 100 states have call predecessors, (117), 98 states have call successors, (117) [2021-12-06 23:55:43,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 532 transitions. [2021-12-06 23:55:43,144 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 532 transitions. Word has length 270 [2021-12-06 23:55:43,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:43,144 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 532 transitions. [2021-12-06 23:55:43,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 23:55:43,144 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 532 transitions. [2021-12-06 23:55:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-06 23:55:43,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:43,146 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:55:43,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 23:55:43,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:43,348 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:43,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:43,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1356182130, now seen corresponding path program 1 times [2021-12-06 23:55:43,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:43,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502698432] [2021-12-06 23:55:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:43,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:43,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:43,359 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:43,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 23:55:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:48,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2203 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:55:48,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:49,239 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-12-06 23:55:49,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 132 treesize of output 36 [2021-12-06 23:55:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-06 23:55:49,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:49,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:49,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502698432] [2021-12-06 23:55:49,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502698432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:49,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:49,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:55:49,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969281087] [2021-12-06 23:55:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:49,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:55:49,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:49,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:55:49,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:55:49,504 INFO L87 Difference]: Start difference. First operand 386 states and 532 transitions. Second operand has 8 states, 7 states have (on average 15.0) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 23:55:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:52,502 INFO L93 Difference]: Finished difference Result 704 states and 979 transitions. [2021-12-06 23:55:52,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:55:52,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.0) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 270 [2021-12-06 23:55:52,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:52,507 INFO L225 Difference]: With dead ends: 704 [2021-12-06 23:55:52,507 INFO L226 Difference]: Without dead ends: 389 [2021-12-06 23:55:52,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:55:52,508 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 5 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:52,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2544 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 344 Invalid, 0 Unknown, 34 Unchecked, 2.8s Time] [2021-12-06 23:55:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-12-06 23:55:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 388. [2021-12-06 23:55:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 259 states have (on average 1.223938223938224) internal successors, (317), 262 states have internal predecessors, (317), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (117), 100 states have call predecessors, (117), 98 states have call successors, (117) [2021-12-06 23:55:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 534 transitions. [2021-12-06 23:55:52,521 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 534 transitions. Word has length 270 [2021-12-06 23:55:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:52,521 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 534 transitions. [2021-12-06 23:55:52,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.0) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 23:55:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 534 transitions. [2021-12-06 23:55:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-12-06 23:55:52,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:52,523 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:55:52,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-06 23:55:52,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:52,724 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:52,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:52,724 INFO L85 PathProgramCache]: Analyzing trace with hash -278439071, now seen corresponding path program 1 times [2021-12-06 23:55:52,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:52,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043657928] [2021-12-06 23:55:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:52,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:52,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:52,727 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:52,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 23:55:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:54,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2217 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:55:54,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-06 23:55:54,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:54,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:54,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043657928] [2021-12-06 23:55:54,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043657928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:54,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:54,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:55:54,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938338219] [2021-12-06 23:55:54,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:54,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:55:54,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:54,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:55:54,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:55:54,530 INFO L87 Difference]: Start difference. First operand 388 states and 534 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 23:55:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:54,605 INFO L93 Difference]: Finished difference Result 739 states and 1041 transitions. [2021-12-06 23:55:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:55:54,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 275 [2021-12-06 23:55:54,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:54,608 INFO L225 Difference]: With dead ends: 739 [2021-12-06 23:55:54,608 INFO L226 Difference]: Without dead ends: 393 [2021-12-06 23:55:54,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:55:54,610 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 7 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:54,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1229 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:55:54,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-06 23:55:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2021-12-06 23:55:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 260 states have (on average 1.2230769230769232) internal successors, (318), 263 states have internal predecessors, (318), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (117), 100 states have call predecessors, (117), 98 states have call successors, (117) [2021-12-06 23:55:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 535 transitions. [2021-12-06 23:55:54,627 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 535 transitions. Word has length 275 [2021-12-06 23:55:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:54,627 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 535 transitions. [2021-12-06 23:55:54,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 23:55:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 535 transitions. [2021-12-06 23:55:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-12-06 23:55:54,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:54,629 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:55:54,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 23:55:54,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:54,829 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:54,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1775833590, now seen corresponding path program 1 times [2021-12-06 23:55:54,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:54,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032935254] [2021-12-06 23:55:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:54,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:54,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:54,833 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:54,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 23:55:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:56,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:55:56,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-12-06 23:55:56,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:56,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:56,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032935254] [2021-12-06 23:55:56,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032935254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:56,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:56,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 23:55:56,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427938407] [2021-12-06 23:55:56,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:56,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:55:56,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:56,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:55:56,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:55:56,708 INFO L87 Difference]: Start difference. First operand 389 states and 535 transitions. Second operand has 10 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 3 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-06 23:55:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:57,190 INFO L93 Difference]: Finished difference Result 747 states and 1036 transitions. [2021-12-06 23:55:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:55:57,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 3 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 275 [2021-12-06 23:55:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:57,195 INFO L225 Difference]: With dead ends: 747 [2021-12-06 23:55:57,195 INFO L226 Difference]: Without dead ends: 403 [2021-12-06 23:55:57,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:55:57,197 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 4 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:57,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 3507 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:55:57,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-12-06 23:55:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 396. [2021-12-06 23:55:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 265 states have (on average 1.2188679245283018) internal successors, (323), 269 states have internal predecessors, (323), 100 states have call successors, (100), 25 states have call predecessors, (100), 29 states have return successors, (126), 101 states have call predecessors, (126), 98 states have call successors, (126) [2021-12-06 23:55:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 549 transitions. [2021-12-06 23:55:57,211 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 549 transitions. Word has length 275 [2021-12-06 23:55:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:57,211 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 549 transitions. [2021-12-06 23:55:57,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 3 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-06 23:55:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 549 transitions. [2021-12-06 23:55:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-12-06 23:55:57,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:57,213 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:55:57,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 23:55:57,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:55:57,414 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:57,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash -432987408, now seen corresponding path program 1 times [2021-12-06 23:55:57,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:55:57,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249889411] [2021-12-06 23:55:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:57,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:55:57,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:55:57,417 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:55:57,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 23:55:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:58,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 2221 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:55:58,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 232 proven. 1 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-06 23:55:59,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:55:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2021-12-06 23:55:59,684 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:55:59,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249889411] [2021-12-06 23:55:59,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249889411] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:55:59,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:55:59,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 23:55:59,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811296760] [2021-12-06 23:55:59,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:55:59,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:55:59,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:55:59,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:55:59,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:55:59,686 INFO L87 Difference]: Start difference. First operand 396 states and 549 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 23:55:59,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:59,941 INFO L93 Difference]: Finished difference Result 768 states and 1097 transitions. [2021-12-06 23:55:59,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:55:59,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 278 [2021-12-06 23:55:59,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:59,945 INFO L225 Difference]: With dead ends: 768 [2021-12-06 23:55:59,945 INFO L226 Difference]: Without dead ends: 411 [2021-12-06 23:55:59,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:55:59,947 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 44 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:59,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 1652 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:55:59,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-12-06 23:55:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 405. [2021-12-06 23:55:59,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 274 states have (on average 1.2226277372262773) internal successors, (335), 278 states have internal predecessors, (335), 100 states have call successors, (100), 25 states have call predecessors, (100), 29 states have return successors, (126), 101 states have call predecessors, (126), 98 states have call successors, (126) [2021-12-06 23:55:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 561 transitions. [2021-12-06 23:55:59,960 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 561 transitions. Word has length 278 [2021-12-06 23:55:59,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:59,961 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 561 transitions. [2021-12-06 23:55:59,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 23:55:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 561 transitions. [2021-12-06 23:55:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-06 23:55:59,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:59,963 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:00,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 23:56:00,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:56:00,164 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:56:00,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:00,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1218434005, now seen corresponding path program 1 times [2021-12-06 23:56:00,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:56:00,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216796796] [2021-12-06 23:56:00,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:00,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:56:00,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:56:00,176 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:56:00,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 23:56:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:07,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 2237 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 23:56:07,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:56:08,707 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-12-06 23:56:08,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 65 treesize of output 17 [2021-12-06 23:56:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-06 23:56:09,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:56:09,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:56:09,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216796796] [2021-12-06 23:56:09,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216796796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:09,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:09,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 23:56:09,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306489761] [2021-12-06 23:56:09,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:09,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:56:09,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:56:09,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:56:09,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:56:09,006 INFO L87 Difference]: Start difference. First operand 405 states and 561 transitions. Second operand has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2021-12-06 23:56:13,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:56:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:15,694 INFO L93 Difference]: Finished difference Result 798 states and 1135 transitions. [2021-12-06 23:56:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:56:15,696 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 284 [2021-12-06 23:56:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:15,699 INFO L225 Difference]: With dead ends: 798 [2021-12-06 23:56:15,700 INFO L226 Difference]: Without dead ends: 429 [2021-12-06 23:56:15,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-06 23:56:15,702 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 101 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:15,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 3627 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 688 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-12-06 23:56:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-06 23:56:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 415. [2021-12-06 23:56:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 282 states have (on average 1.2163120567375887) internal successors, (343), 286 states have internal predecessors, (343), 100 states have call successors, (100), 25 states have call predecessors, (100), 31 states have return successors, (137), 103 states have call predecessors, (137), 98 states have call successors, (137) [2021-12-06 23:56:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 580 transitions. [2021-12-06 23:56:15,716 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 580 transitions. Word has length 284 [2021-12-06 23:56:15,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:15,716 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 580 transitions. [2021-12-06 23:56:15,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2021-12-06 23:56:15,717 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 580 transitions. [2021-12-06 23:56:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-06 23:56:15,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:15,718 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:15,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 23:56:15,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:56:15,919 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:56:15,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:15,919 INFO L85 PathProgramCache]: Analyzing trace with hash 71813605, now seen corresponding path program 1 times [2021-12-06 23:56:15,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:56:15,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446479687] [2021-12-06 23:56:15,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:15,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:56:15,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:56:15,922 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:56:15,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 23:56:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:17,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 2228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:56:17,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:56:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-12-06 23:56:17,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:56:17,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:56:17,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446479687] [2021-12-06 23:56:17,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446479687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:17,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:17,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:56:17,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478214929] [2021-12-06 23:56:17,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:17,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:56:17,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:56:17,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:56:17,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:56:17,746 INFO L87 Difference]: Start difference. First operand 415 states and 580 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-06 23:56:17,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:17,823 INFO L93 Difference]: Finished difference Result 794 states and 1149 transitions. [2021-12-06 23:56:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:56:17,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 284 [2021-12-06 23:56:17,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:17,828 INFO L225 Difference]: With dead ends: 794 [2021-12-06 23:56:17,829 INFO L226 Difference]: Without dead ends: 415 [2021-12-06 23:56:17,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:56:17,831 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 7 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:17,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1246 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:56:17,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-06 23:56:17,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-12-06 23:56:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 282 states have (on average 1.2092198581560283) internal successors, (341), 286 states have internal predecessors, (341), 100 states have call successors, (100), 25 states have call predecessors, (100), 31 states have return successors, (137), 103 states have call predecessors, (137), 98 states have call successors, (137) [2021-12-06 23:56:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 578 transitions. [2021-12-06 23:56:17,846 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 578 transitions. Word has length 284 [2021-12-06 23:56:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:17,846 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 578 transitions. [2021-12-06 23:56:17,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-06 23:56:17,846 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 578 transitions. [2021-12-06 23:56:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-12-06 23:56:17,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:17,848 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:17,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-06 23:56:18,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:56:18,049 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:56:18,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:18,049 INFO L85 PathProgramCache]: Analyzing trace with hash 322697849, now seen corresponding path program 1 times [2021-12-06 23:56:18,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:56:18,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092683] [2021-12-06 23:56:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:18,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:56:18,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:56:18,053 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:56:18,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1e7c10-4d6e-4afc-b7b2-b9f542938bf0/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 23:59:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:21,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 129 conjunts are in the unsatisfiable core [2021-12-06 23:59:21,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:21,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-06 23:59:21,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:59:21,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:59:30,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:59:30,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:30,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 99 [2021-12-06 23:59:35,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 23:59:35,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:35,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 37 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 97 [2021-12-06 23:59:52,584 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_176| (_ BitVec 64)) (v_ArrVal_3013 (_ BitVec 1))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_176|)))) (= (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_176| v_ArrVal_3013) |c_#valid|))) (exists ((v_ArrVal_3015 (Array (_ BitVec 64) (_ BitVec 8)))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3015))) (exists ((v_ArrVal_3014 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3014) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 23:59:57,032 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_aws_array_list_is_valid_~#required_size~0.base_71| (_ BitVec 64)) (v_ArrVal_3016 (_ BitVec 1)) (v_ArrVal_3014 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_3012 (_ BitVec 1)) (|v___CPROVER_overflow_mult_~#c~1.base_176| (_ BitVec 64)) (v_ArrVal_3013 (_ BitVec 1)) (v_ArrVal_3015 (Array (_ BitVec 64) (_ BitVec 8)))) (let ((.cse0 (store |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_71| v_ArrVal_3012))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_71|)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |v___CPROVER_overflow_mult_~#c~1.base_176|))))))) (= (store (store .cse0 |v___CPROVER_overflow_mult_~#c~1.base_176| v_ArrVal_3013) |v_aws_array_list_is_valid_~#required_size~0.base_71| v_ArrVal_3016) |c_#valid|) (= (store |c_old(#memory_$Pointer$.base)| |v_aws_array_list_is_valid_~#required_size~0.base_71| v_ArrVal_3014) |c_#memory_$Pointer$.base|) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_3012))) (= |c_#memory_int| (store |c_old(#memory_int)| |v_aws_array_list_is_valid_~#required_size~0.base_71| v_ArrVal_3015))))) is different from true [2021-12-07 00:00:10,023 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3018 (Array (_ BitVec 64) (_ BitVec 64)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3018))) (exists ((v_ArrVal_3017 (Array (_ BitVec 64) (_ BitVec 8)))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3017)))) is different from true