./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_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_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/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_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/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_8fceb10f-c92c-4f4c-8b74-955031772868/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 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:08:20,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:08:20,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:08:20,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:08:20,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:08:20,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:08:20,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:08:20,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:08:20,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:08:20,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:08:20,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:08:20,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:08:20,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:08:20,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:08:20,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:08:20,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:08:20,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:08:20,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:08:20,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:08:20,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:08:20,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:08:20,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:08:20,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:08:20,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:08:20,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:08:20,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:08:20,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:08:20,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:08:20,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:08:20,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:08:20,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:08:20,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:08:20,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:08:20,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:08:20,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:08:20,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:08:20,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:08:20,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:08:20,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:08:20,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:08:20,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:08:20,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 21:08:20,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:08:20,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:08:20,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:08:20,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:08:20,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:08:20,480 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:08:20,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:08:20,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:08:20,481 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:08:20,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:08:20,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:08:20,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:08:20,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:08:20,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:08:20,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:08:20,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:08:20,487 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:08:20,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:08:20,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:08:20,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:08:20,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:08:20,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:08:20,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:08:20,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:08:20,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:08:20,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:08:20,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:08:20,488 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:08:20,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:08:20,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:08:20,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:08:20,489 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_8fceb10f-c92c-4f4c-8b74-955031772868/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2021-12-06 21:08:20,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:08:20,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:08:20,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:08:20,687 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:08:20,687 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:08:20,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-12-06 21:08:20,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/data/f7cb456ef/7af08156d5154feaac1103fb08a7936d/FLAG141914df6 [2021-12-06 21:08:21,353 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:08:21,353 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-12-06 21:08:21,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/data/f7cb456ef/7af08156d5154feaac1103fb08a7936d/FLAG141914df6 [2021-12-06 21:08:21,783 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/data/f7cb456ef/7af08156d5154feaac1103fb08a7936d [2021-12-06 21:08:21,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:08:21,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:08:21,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:08:21,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:08:21,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:08:21,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:08:21" (1/1) ... [2021-12-06 21:08:21,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aadb8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:21, skipping insertion in model container [2021-12-06 21:08:21,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:08:21" (1/1) ... [2021-12-06 21:08:21,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:08:21,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:08:22,116 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_8fceb10f-c92c-4f4c-8b74-955031772868/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-12-06 21:08:22,121 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_8fceb10f-c92c-4f4c-8b74-955031772868/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-12-06 21:08:22,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,726 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,727 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,737 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,737 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,742 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:22,742 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,043 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 21:08:23,044 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 21:08:23,045 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 21:08:23,046 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 21:08:23,047 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 21:08:23,047 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 21:08:23,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 21:08:23,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 21:08:23,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 21:08:23,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 21:08:23,172 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 21:08:23,192 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,197 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,245 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,245 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,246 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,246 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,246 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,247 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,247 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,247 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,248 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,248 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,248 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,248 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,248 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,251 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,251 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,251 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,252 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,254 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,254 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,259 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,260 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,260 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,269 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,269 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,269 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:08:23,293 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:08:23,304 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_8fceb10f-c92c-4f4c-8b74-955031772868/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-12-06 21:08:23,304 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_8fceb10f-c92c-4f4c-8b74-955031772868/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-12-06 21:08:23,339 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,339 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,340 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,340 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,340 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,345 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,346 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,346 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,346 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,347 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,348 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,348 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,348 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,372 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 21:08:23,372 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 21:08:23,373 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 21:08:23,373 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 21:08:23,374 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 21:08:23,374 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 21:08:23,375 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 21:08:23,375 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 21:08:23,375 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 21:08:23,376 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 21:08:23,390 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 21:08:23,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,404 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,423 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,423 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,423 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,424 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,425 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,425 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,430 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,430 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,434 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,434 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,434 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 21:08:23,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:08:23,614 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:08:23,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23 WrapperNode [2021-12-06 21:08:23,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:08:23,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:08:23,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:08:23,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:08:23,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23" (1/1) ... [2021-12-06 21:08:23,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23" (1/1) ... [2021-12-06 21:08:23,756 INFO L137 Inliner]: procedures = 697, calls = 1921, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1060 [2021-12-06 21:08:23,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:08:23,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:08:23,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:08:23,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:08:23,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23" (1/1) ... [2021-12-06 21:08:23,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23" (1/1) ... [2021-12-06 21:08:23,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23" (1/1) ... [2021-12-06 21:08:23,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23" (1/1) ... [2021-12-06 21:08:23,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23" (1/1) ... [2021-12-06 21:08:23,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23" (1/1) ... [2021-12-06 21:08:23,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23" (1/1) ... [2021-12-06 21:08:23,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:08:23,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:08:23,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:08:23,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:08:23,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23" (1/1) ... [2021-12-06 21:08:23,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:08:23,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:23,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:08:23,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:08:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-06 21:08:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-06 21:08:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-06 21:08:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-06 21:08:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:08:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-06 21:08:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-06 21:08:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-06 21:08:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-06 21:08:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-06 21:08:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-06 21:08:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-12-06 21:08:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-12-06 21:08:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 21:08:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 21:08:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-06 21:08:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-06 21:08:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 21:08:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 21:08:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-12-06 21:08:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-12-06 21:08:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 21:08:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:08:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 21:08:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-12-06 21:08:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-12-06 21:08:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-06 21:08:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-06 21:08:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:08:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:08:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-06 21:08:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-06 21:08:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-06 21:08:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-06 21:08:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 21:08:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-06 21:08:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-06 21:08:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-06 21:08:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-06 21:08:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-06 21:08:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-06 21:08:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 21:08:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 21:08:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 21:08:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 21:08:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-06 21:08:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-06 21:08:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-12-06 21:08:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-12-06 21:08:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:08:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 21:08:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 21:08:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-06 21:08:23,907 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-06 21:08:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-06 21:08:23,907 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-06 21:08:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-06 21:08:23,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-06 21:08:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 21:08:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-06 21:08:23,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-06 21:08:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-06 21:08:23,907 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-06 21:08:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 21:08:23,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 21:08:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:08:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-12-06 21:08:23,908 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-12-06 21:08:24,146 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:08:24,147 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:08:26,124 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:08:26,133 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:08:26,133 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-06 21:08:26,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:08:26 BoogieIcfgContainer [2021-12-06 21:08:26,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:08:26,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:08:26,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:08:26,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:08:26,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:08:21" (1/3) ... [2021-12-06 21:08:26,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86c1a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:08:26, skipping insertion in model container [2021-12-06 21:08:26,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:08:23" (2/3) ... [2021-12-06 21:08:26,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86c1a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:08:26, skipping insertion in model container [2021-12-06 21:08:26,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:08:26" (3/3) ... [2021-12-06 21:08:26,141 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2021-12-06 21:08:26,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:08:26,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 21:08:26,182 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:08:26,187 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 21:08:26,188 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 21:08:26,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 460 states, 270 states have (on average 1.2703703703703704) internal successors, (343), 275 states have internal predecessors, (343), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-12-06 21:08:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 21:08:26,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:26,225 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 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] [2021-12-06 21:08:26,225 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:26,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:26,229 INFO L85 PathProgramCache]: Analyzing trace with hash 207530193, now seen corresponding path program 1 times [2021-12-06 21:08:26,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:26,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360654830] [2021-12-06 21:08:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:26,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:08:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 21:08:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 21:08:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 21:08:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 21:08:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 21:08:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:08:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 21:08:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 21:08:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 21:08:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 21:08:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 21:08:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:08:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:08:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:08:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:08:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:08:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:08:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:08:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:08:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 21:08:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 21:08:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-12-06 21:08:26,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:26,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360654830] [2021-12-06 21:08:26,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360654830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:26,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:26,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:08:26,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340551368] [2021-12-06 21:08:26,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:26,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:08:26,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:08:26,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:08:26,979 INFO L87 Difference]: Start difference. First operand has 460 states, 270 states have (on average 1.2703703703703704) internal successors, (343), 275 states have internal predecessors, (343), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 21:08:29,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:29,123 INFO L93 Difference]: Finished difference Result 1349 states and 2508 transitions. [2021-12-06 21:08:29,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:08:29,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2021-12-06 21:08:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:29,145 INFO L225 Difference]: With dead ends: 1349 [2021-12-06 21:08:29,145 INFO L226 Difference]: Without dead ends: 895 [2021-12-06 21:08:29,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:08:29,157 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 535 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:29,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 1538 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 21:08:29,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-12-06 21:08:29,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 453. [2021-12-06 21:08:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 265 states have (on average 1.2339622641509433) internal successors, (327), 268 states have internal predecessors, (327), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2021-12-06 21:08:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 645 transitions. [2021-12-06 21:08:29,277 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 645 transitions. Word has length 141 [2021-12-06 21:08:29,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:29,277 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 645 transitions. [2021-12-06 21:08:29,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 21:08:29,278 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 645 transitions. [2021-12-06 21:08:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:08:29,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:29,284 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 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 21:08:29,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:08:29,285 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1080700984, now seen corresponding path program 1 times [2021-12-06 21:08:29,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:29,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661018952] [2021-12-06 21:08:29,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:29,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:08:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 21:08:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 21:08:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 21:08:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 21:08:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 21:08:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:08:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 21:08:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 21:08:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 21:08:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 21:08:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 21:08:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:08:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:08:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:08:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:08:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:08:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:08:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:08:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:08:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 21:08:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 21:08:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 21:08:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 21:08:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 21:08:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-12-06 21:08:29,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:29,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661018952] [2021-12-06 21:08:29,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661018952] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:08:29,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651150289] [2021-12-06 21:08:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:29,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:29,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:29,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:29,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:08:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:30,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2501 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 21:08:30,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-06 21:08:30,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:30,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651150289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:30,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:08:30,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-06 21:08:30,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021673618] [2021-12-06 21:08:30,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:30,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:08:30,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:30,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:08:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:08:30,328 INFO L87 Difference]: Start difference. First operand 453 states and 645 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 21:08:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:31,187 INFO L93 Difference]: Finished difference Result 872 states and 1259 transitions. [2021-12-06 21:08:31,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:08:31,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 156 [2021-12-06 21:08:31,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:31,192 INFO L225 Difference]: With dead ends: 872 [2021-12-06 21:08:31,193 INFO L226 Difference]: Without dead ends: 455 [2021-12-06 21:08:31,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:08:31,197 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 665 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:31,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 2237 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:08:31,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-12-06 21:08:31,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2021-12-06 21:08:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 266 states have (on average 1.2330827067669172) internal successors, (328), 270 states have internal predecessors, (328), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2021-12-06 21:08:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 659 transitions. [2021-12-06 21:08:31,231 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 659 transitions. Word has length 156 [2021-12-06 21:08:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:31,233 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 659 transitions. [2021-12-06 21:08:31,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 21:08:31,233 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 659 transitions. [2021-12-06 21:08:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 21:08:31,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:31,243 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:31,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:08:31,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:31,444 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:31,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:31,444 INFO L85 PathProgramCache]: Analyzing trace with hash 651465952, now seen corresponding path program 1 times [2021-12-06 21:08:31,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:31,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095777001] [2021-12-06 21:08:31,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:31,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:08:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 21:08:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 21:08:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 21:08:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 21:08:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 21:08:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:08:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 21:08:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 21:08:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 21:08:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:08:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 21:08:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 21:08:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:08:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:08:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:08:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:08:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:08:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 21:08:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 21:08:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 21:08:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 21:08:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 21:08:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 21:08:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 21:08:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 21:08:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-12-06 21:08:31,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:31,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095777001] [2021-12-06 21:08:31,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095777001] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:08:31,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401992744] [2021-12-06 21:08:31,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:31,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:31,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:31,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:31,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:08:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:32,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 21:08:32,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-06 21:08:32,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:32,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401992744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:32,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:08:32,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-06 21:08:32,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581130474] [2021-12-06 21:08:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:32,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:08:32,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:32,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:08:32,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:08:32,461 INFO L87 Difference]: Start difference. First operand 455 states and 659 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-06 21:08:34,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:34,115 INFO L93 Difference]: Finished difference Result 895 states and 1330 transitions. [2021-12-06 21:08:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 21:08:34,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 164 [2021-12-06 21:08:34,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:34,120 INFO L225 Difference]: With dead ends: 895 [2021-12-06 21:08:34,120 INFO L226 Difference]: Without dead ends: 476 [2021-12-06 21:08:34,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-12-06 21:08:34,123 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 691 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:34,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 3303 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 21:08:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-12-06 21:08:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 474. [2021-12-06 21:08:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-12-06 21:08:34,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2021-12-06 21:08:34,147 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 164 [2021-12-06 21:08:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:34,147 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2021-12-06 21:08:34,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-06 21:08:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2021-12-06 21:08:34,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 21:08:34,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:34,150 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:34,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 21:08:34,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:34,352 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash 706817890, now seen corresponding path program 1 times [2021-12-06 21:08:34,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:34,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102112889] [2021-12-06 21:08:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:34,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:34,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:08:34,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111487528] [2021-12-06 21:08:34,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:34,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:34,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:34,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:34,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 21:08:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:34,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 21:08:34,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-06 21:08:34,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:34,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:34,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102112889] [2021-12-06 21:08:34,959 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:08:34,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111487528] [2021-12-06 21:08:34,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111487528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:34,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:34,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:08:34,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953373402] [2021-12-06 21:08:34,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:34,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:08:34,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:08:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:08:34,960 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 21:08:36,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:36,597 INFO L93 Difference]: Finished difference Result 920 states and 1403 transitions. [2021-12-06 21:08:36,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 21:08:36,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 179 [2021-12-06 21:08:36,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:36,602 INFO L225 Difference]: With dead ends: 920 [2021-12-06 21:08:36,602 INFO L226 Difference]: Without dead ends: 482 [2021-12-06 21:08:36,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 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 21:08:36,605 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 689 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:36,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 2763 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 21:08:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-12-06 21:08:36,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 474. [2021-12-06 21:08:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-12-06 21:08:36,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2021-12-06 21:08:36,628 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 179 [2021-12-06 21:08:36,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:36,629 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2021-12-06 21:08:36,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 21:08:36,629 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2021-12-06 21:08:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-06 21:08:36,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:36,631 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:36,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 21:08:36,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:36,832 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:36,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash -548515061, now seen corresponding path program 1 times [2021-12-06 21:08:36,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:36,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444467444] [2021-12-06 21:08:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:36,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:36,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:08:36,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953540482] [2021-12-06 21:08:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:36,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:36,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:36,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:37,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 21:08:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:37,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:08:37,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:37,572 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-06 21:08:37,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:37,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:37,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444467444] [2021-12-06 21:08:37,572 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:08:37,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953540482] [2021-12-06 21:08:37,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953540482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:37,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:37,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:08:37,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108198909] [2021-12-06 21:08:37,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:37,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:08:37,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:37,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:08:37,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:08:37,574 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-06 21:08:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:39,738 INFO L93 Difference]: Finished difference Result 930 states and 1407 transitions. [2021-12-06 21:08:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:08:39,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 195 [2021-12-06 21:08:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:39,743 INFO L225 Difference]: With dead ends: 930 [2021-12-06 21:08:39,743 INFO L226 Difference]: Without dead ends: 492 [2021-12-06 21:08:39,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:08:39,746 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 754 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:39,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 3726 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 21:08:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-12-06 21:08:39,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 474. [2021-12-06 21:08:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-12-06 21:08:39,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2021-12-06 21:08:39,768 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 195 [2021-12-06 21:08:39,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:39,769 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2021-12-06 21:08:39,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-06 21:08:39,769 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2021-12-06 21:08:39,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-06 21:08:39,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:39,771 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:08:39,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 21:08:39,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:39,972 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2018600789, now seen corresponding path program 2 times [2021-12-06 21:08:39,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:39,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293871644] [2021-12-06 21:08:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:39,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:40,022 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:08:40,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434035560] [2021-12-06 21:08:40,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:08:40,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:40,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:40,024 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:40,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 21:08:40,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 21:08:40,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:08:40,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 21:08:40,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-06 21:08:40,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:40,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:40,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293871644] [2021-12-06 21:08:40,850 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:08:40,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434035560] [2021-12-06 21:08:40,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434035560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:40,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:40,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:08:40,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099092452] [2021-12-06 21:08:40,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:40,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:08:40,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:40,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:08:40,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:08:40,851 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-06 21:08:42,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:42,169 INFO L93 Difference]: Finished difference Result 878 states and 1321 transitions. [2021-12-06 21:08:42,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:08:42,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 210 [2021-12-06 21:08:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:42,173 INFO L225 Difference]: With dead ends: 878 [2021-12-06 21:08:42,173 INFO L226 Difference]: Without dead ends: 476 [2021-12-06 21:08:42,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:08:42,176 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 682 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:42,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 2791 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 21:08:42,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-12-06 21:08:42,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2021-12-06 21:08:42,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 283 states have (on average 1.2402826855123674) internal successors, (351), 288 states have internal predecessors, (351), 162 states have call successors, (162), 27 states have call predecessors, (162), 29 states have return successors, (201), 161 states have call predecessors, (201), 160 states have call successors, (201) [2021-12-06 21:08:42,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 714 transitions. [2021-12-06 21:08:42,197 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 714 transitions. Word has length 210 [2021-12-06 21:08:42,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:42,198 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 714 transitions. [2021-12-06 21:08:42,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-06 21:08:42,198 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 714 transitions. [2021-12-06 21:08:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-06 21:08:42,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:42,201 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:42,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 21:08:42,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:42,402 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:42,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:42,402 INFO L85 PathProgramCache]: Analyzing trace with hash -914550263, now seen corresponding path program 1 times [2021-12-06 21:08:42,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:42,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320213306] [2021-12-06 21:08:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:42,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:42,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:08:42,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436516740] [2021-12-06 21:08:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:42,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:42,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:42,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:42,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 21:08:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:42,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:08:42,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-06 21:08:43,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:43,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320213306] [2021-12-06 21:08:43,123 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:08:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436516740] [2021-12-06 21:08:43,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436516740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:43,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:43,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:08:43,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588318083] [2021-12-06 21:08:43,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:43,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:08:43,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:08:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:08:43,124 INFO L87 Difference]: Start difference. First operand 476 states and 714 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-06 21:08:44,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:44,613 INFO L93 Difference]: Finished difference Result 883 states and 1346 transitions. [2021-12-06 21:08:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:08:44,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 233 [2021-12-06 21:08:44,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:44,618 INFO L225 Difference]: With dead ends: 883 [2021-12-06 21:08:44,618 INFO L226 Difference]: Without dead ends: 479 [2021-12-06 21:08:44,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:08:44,620 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 706 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:44,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 3309 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 21:08:44,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-06 21:08:44,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 477. [2021-12-06 21:08:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 284 states have (on average 1.2394366197183098) internal successors, (352), 289 states have internal predecessors, (352), 162 states have call successors, (162), 27 states have call predecessors, (162), 29 states have return successors, (201), 161 states have call predecessors, (201), 160 states have call successors, (201) [2021-12-06 21:08:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 715 transitions. [2021-12-06 21:08:44,639 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 715 transitions. Word has length 233 [2021-12-06 21:08:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:44,640 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 715 transitions. [2021-12-06 21:08:44,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-06 21:08:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 715 transitions. [2021-12-06 21:08:44,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-06 21:08:44,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:44,641 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:44,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 21:08:44,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 21:08:44,842 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:44,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:44,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2024605444, now seen corresponding path program 1 times [2021-12-06 21:08:44,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:44,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980223319] [2021-12-06 21:08:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:44,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:44,897 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:08:44,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910418190] [2021-12-06 21:08:44,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:44,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:44,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:44,898 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:44,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 21:08:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:45,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:08:45,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-06 21:08:45,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:08:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-12-06 21:08:45,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:45,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980223319] [2021-12-06 21:08:45,731 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:08:45,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910418190] [2021-12-06 21:08:45,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910418190] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:08:45,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:08:45,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-06 21:08:45,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514218597] [2021-12-06 21:08:45,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:08:45,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:08:45,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:45,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:08:45,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:08:45,733 INFO L87 Difference]: Start difference. First operand 477 states and 715 transitions. Second operand has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) [2021-12-06 21:08:48,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:48,357 INFO L93 Difference]: Finished difference Result 901 states and 1380 transitions. [2021-12-06 21:08:48,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:08:48,357 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) Word has length 234 [2021-12-06 21:08:48,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:48,361 INFO L225 Difference]: With dead ends: 901 [2021-12-06 21:08:48,362 INFO L226 Difference]: Without dead ends: 496 [2021-12-06 21:08:48,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-12-06 21:08:48,364 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1170 mSDsluCounter, 3222 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:48,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 3780 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 21:08:48,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-12-06 21:08:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 490. [2021-12-06 21:08:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 296 states have (on average 1.2466216216216217) internal successors, (369), 300 states have internal predecessors, (369), 163 states have call successors, (163), 27 states have call predecessors, (163), 29 states have return successors, (202), 163 states have call predecessors, (202), 161 states have call successors, (202) [2021-12-06 21:08:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 734 transitions. [2021-12-06 21:08:48,385 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 734 transitions. Word has length 234 [2021-12-06 21:08:48,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:48,386 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 734 transitions. [2021-12-06 21:08:48,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) [2021-12-06 21:08:48,386 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 734 transitions. [2021-12-06 21:08:48,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-12-06 21:08:48,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:48,388 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:48,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-06 21:08:48,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:48,589 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:48,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:48,591 INFO L85 PathProgramCache]: Analyzing trace with hash -729173346, now seen corresponding path program 2 times [2021-12-06 21:08:48,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:48,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726371545] [2021-12-06 21:08:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:48,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:48,698 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:08:48,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221909874] [2021-12-06 21:08:48,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:08:48,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:48,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:48,699 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:48,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 21:08:49,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 21:08:49,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:08:49,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 3309 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:08:49,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-06 21:08:49,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:49,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:49,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726371545] [2021-12-06 21:08:49,714 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:08:49,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221909874] [2021-12-06 21:08:49,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221909874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:49,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:49,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:08:49,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808686835] [2021-12-06 21:08:49,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:49,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:08:49,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:49,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:08:49,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:08:49,716 INFO L87 Difference]: Start difference. First operand 490 states and 734 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-06 21:08:51,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:51,501 INFO L93 Difference]: Finished difference Result 912 states and 1378 transitions. [2021-12-06 21:08:51,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:08:51,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 264 [2021-12-06 21:08:51,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:51,506 INFO L225 Difference]: With dead ends: 912 [2021-12-06 21:08:51,506 INFO L226 Difference]: Without dead ends: 502 [2021-12-06 21:08:51,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:08:51,508 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 687 mSDsluCounter, 3324 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:51,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 3894 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 21:08:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-12-06 21:08:51,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2021-12-06 21:08:51,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 302 states have (on average 1.2450331125827814) internal successors, (376), 306 states have internal predecessors, (376), 168 states have call successors, (168), 28 states have call predecessors, (168), 30 states have return successors, (207), 168 states have call predecessors, (207), 166 states have call successors, (207) [2021-12-06 21:08:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 751 transitions. [2021-12-06 21:08:51,527 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 751 transitions. Word has length 264 [2021-12-06 21:08:51,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:51,527 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 751 transitions. [2021-12-06 21:08:51,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-06 21:08:51,528 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 751 transitions. [2021-12-06 21:08:51,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-12-06 21:08:51,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:51,529 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:51,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 21:08:51,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:51,731 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:51,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:51,733 INFO L85 PathProgramCache]: Analyzing trace with hash -213333290, now seen corresponding path program 1 times [2021-12-06 21:08:51,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:51,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707375744] [2021-12-06 21:08:51,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:51,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:51,828 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:08:51,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669406652] [2021-12-06 21:08:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:51,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:51,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:51,829 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:51,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 21:08:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:52,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 3591 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:08:52,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-12-06 21:08:52,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:52,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:52,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707375744] [2021-12-06 21:08:52,576 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:08:52,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669406652] [2021-12-06 21:08:52,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669406652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:52,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:52,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:08:52,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291563087] [2021-12-06 21:08:52,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:52,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:08:52,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:52,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:08:52,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:08:52,578 INFO L87 Difference]: Start difference. First operand 502 states and 751 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 21:08:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:53,930 INFO L93 Difference]: Finished difference Result 1022 states and 1607 transitions. [2021-12-06 21:08:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 21:08:53,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 294 [2021-12-06 21:08:53,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:53,934 INFO L225 Difference]: With dead ends: 1022 [2021-12-06 21:08:53,934 INFO L226 Difference]: Without dead ends: 556 [2021-12-06 21:08:53,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:08:53,937 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 21 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:53,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 3034 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 21:08:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-12-06 21:08:53,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 514. [2021-12-06 21:08:53,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 314 states have (on average 1.2452229299363058) internal successors, (391), 318 states have internal predecessors, (391), 168 states have call successors, (168), 28 states have call predecessors, (168), 30 states have return successors, (207), 168 states have call predecessors, (207), 166 states have call successors, (207) [2021-12-06 21:08:53,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 766 transitions. [2021-12-06 21:08:53,960 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 766 transitions. Word has length 294 [2021-12-06 21:08:53,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:53,961 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 766 transitions. [2021-12-06 21:08:53,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 21:08:53,961 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 766 transitions. [2021-12-06 21:08:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-12-06 21:08:53,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:53,963 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:08:53,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-06 21:08:54,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 21:08:54,164 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:54,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:54,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1160105302, now seen corresponding path program 1 times [2021-12-06 21:08:54,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:54,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540076703] [2021-12-06 21:08:54,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:54,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:54,254 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:08:54,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721893313] [2021-12-06 21:08:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:54,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:54,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:54,255 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:54,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 21:08:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:54,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 3444 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:08:54,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-12-06 21:08:54,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:54,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540076703] [2021-12-06 21:08:54,919 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:08:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721893313] [2021-12-06 21:08:54,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721893313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:54,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:54,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:08:54,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073813819] [2021-12-06 21:08:54,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:54,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:08:54,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:54,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:08:54,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:08:54,921 INFO L87 Difference]: Start difference. First operand 514 states and 766 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 21:08:54,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:54,952 INFO L93 Difference]: Finished difference Result 1004 states and 1544 transitions. [2021-12-06 21:08:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:08:54,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 279 [2021-12-06 21:08:54,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:54,957 INFO L225 Difference]: With dead ends: 1004 [2021-12-06 21:08:54,957 INFO L226 Difference]: Without dead ends: 526 [2021-12-06 21:08:54,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:08:54,961 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 3 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1921 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 21:08:54,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1921 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:08:54,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-12-06 21:08:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 520. [2021-12-06 21:08:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 320 states have (on average 1.240625) internal successors, (397), 324 states have internal predecessors, (397), 168 states have call successors, (168), 28 states have call predecessors, (168), 30 states have return successors, (207), 168 states have call predecessors, (207), 166 states have call successors, (207) [2021-12-06 21:08:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 772 transitions. [2021-12-06 21:08:54,992 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 772 transitions. Word has length 279 [2021-12-06 21:08:54,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:54,992 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 772 transitions. [2021-12-06 21:08:54,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 21:08:54,992 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 772 transitions. [2021-12-06 21:08:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-12-06 21:08:54,995 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:54,995 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:55,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 21:08:55,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:55,196 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:55,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2103075550, now seen corresponding path program 1 times [2021-12-06 21:08:55,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:55,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630867112] [2021-12-06 21:08:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:55,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:55,280 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:08:55,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186418613] [2021-12-06 21:08:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:55,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:55,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:55,281 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:55,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 21:08:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:55,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 3575 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 21:08:55,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-12-06 21:08:56,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:56,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:56,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630867112] [2021-12-06 21:08:56,026 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:08:56,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186418613] [2021-12-06 21:08:56,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186418613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:56,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:56,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:08:56,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445548138] [2021-12-06 21:08:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:56,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:08:56,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:08:56,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:08:56,028 INFO L87 Difference]: Start difference. First operand 520 states and 772 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-06 21:08:56,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:56,637 INFO L93 Difference]: Finished difference Result 1002 states and 1501 transitions. [2021-12-06 21:08:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:08:56,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 294 [2021-12-06 21:08:56,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:56,641 INFO L225 Difference]: With dead ends: 1002 [2021-12-06 21:08:56,641 INFO L226 Difference]: Without dead ends: 557 [2021-12-06 21:08:56,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:08:56,644 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 46 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:56,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 3322 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:08:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-12-06 21:08:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 528. [2021-12-06 21:08:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 324 states have (on average 1.2376543209876543) internal successors, (401), 328 states have internal predecessors, (401), 172 states have call successors, (172), 28 states have call predecessors, (172), 30 states have return successors, (212), 172 states have call predecessors, (212), 170 states have call successors, (212) [2021-12-06 21:08:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 785 transitions. [2021-12-06 21:08:56,665 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 785 transitions. Word has length 294 [2021-12-06 21:08:56,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:56,666 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 785 transitions. [2021-12-06 21:08:56,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-06 21:08:56,666 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 785 transitions. [2021-12-06 21:08:56,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-12-06 21:08:56,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:56,668 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:56,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 21:08:56,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:56,869 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:56,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:56,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2026174752, now seen corresponding path program 1 times [2021-12-06 21:08:56,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:56,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235976280] [2021-12-06 21:08:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:56,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:56,961 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:08:56,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318767872] [2021-12-06 21:08:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:56,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:56,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:56,963 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:56,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 21:08:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 3578 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-06 21:08:57,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 251 proven. 1 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-12-06 21:08:57,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:08:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2021-12-06 21:08:58,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:58,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235976280] [2021-12-06 21:08:58,258 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:08:58,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318767872] [2021-12-06 21:08:58,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318767872] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:08:58,259 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:08:58,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2021-12-06 21:08:58,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116039726] [2021-12-06 21:08:58,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:08:58,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 21:08:58,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:58,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 21:08:58,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:08:58,261 INFO L87 Difference]: Start difference. First operand 528 states and 785 transitions. Second operand has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2021-12-06 21:08:58,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:58,605 INFO L93 Difference]: Finished difference Result 1029 states and 1537 transitions. [2021-12-06 21:08:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:08:58,606 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) Word has length 294 [2021-12-06 21:08:58,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:58,610 INFO L225 Difference]: With dead ends: 1029 [2021-12-06 21:08:58,610 INFO L226 Difference]: Without dead ends: 534 [2021-12-06 21:08:58,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:08:58,613 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 6 mSDsluCounter, 6623 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7234 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:58,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7234 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:08:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-12-06 21:08:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 531. [2021-12-06 21:08:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 326 states have (on average 1.2361963190184049) internal successors, (403), 331 states have internal predecessors, (403), 172 states have call successors, (172), 28 states have call predecessors, (172), 31 states have return successors, (215), 172 states have call predecessors, (215), 170 states have call successors, (215) [2021-12-06 21:08:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 790 transitions. [2021-12-06 21:08:58,634 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 790 transitions. Word has length 294 [2021-12-06 21:08:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:58,635 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 790 transitions. [2021-12-06 21:08:58,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2021-12-06 21:08:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 790 transitions. [2021-12-06 21:08:58,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-12-06 21:08:58,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:58,637 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:08:58,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 21:08:58,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:58,838 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:58,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1226691340, now seen corresponding path program 1 times [2021-12-06 21:08:58,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:58,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041178869] [2021-12-06 21:08:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:58,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:58,915 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:08:58,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701524574] [2021-12-06 21:08:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:58,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:58,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:58,917 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:58,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 21:08:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:59,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 3613 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 21:08:59,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 280 proven. 3 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-12-06 21:08:59,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:08:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2021-12-06 21:08:59,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:59,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041178869] [2021-12-06 21:08:59,986 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:08:59,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701524574] [2021-12-06 21:08:59,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701524574] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:08:59,986 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:08:59,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-12-06 21:08:59,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261797566] [2021-12-06 21:08:59,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:08:59,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:08:59,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:59,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:08:59,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:08:59,989 INFO L87 Difference]: Start difference. First operand 531 states and 790 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2021-12-06 21:09:02,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:09:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:02,094 INFO L93 Difference]: Finished difference Result 1035 states and 1556 transitions. [2021-12-06 21:09:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:09:02,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) Word has length 305 [2021-12-06 21:09:02,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:02,099 INFO L225 Difference]: With dead ends: 1035 [2021-12-06 21:09:02,099 INFO L226 Difference]: Without dead ends: 582 [2021-12-06 21:09:02,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:09:02,102 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 56 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4625 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:02,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 4625 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 21:09:02,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-12-06 21:09:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 551. [2021-12-06 21:09:02,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 339 states have (on average 1.2359882005899705) internal successors, (419), 343 states have internal predecessors, (419), 179 states have call successors, (179), 28 states have call predecessors, (179), 31 states have return successors, (225), 180 states have call predecessors, (225), 177 states have call successors, (225) [2021-12-06 21:09:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 823 transitions. [2021-12-06 21:09:02,130 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 823 transitions. Word has length 305 [2021-12-06 21:09:02,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:02,131 INFO L470 AbstractCegarLoop]: Abstraction has 551 states and 823 transitions. [2021-12-06 21:09:02,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2021-12-06 21:09:02,131 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 823 transitions. [2021-12-06 21:09:02,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-12-06 21:09:02,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:02,134 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:09:02,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 21:09:02,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 21:09:02,335 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:02,335 INFO L85 PathProgramCache]: Analyzing trace with hash -538413672, now seen corresponding path program 1 times [2021-12-06 21:09:02,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:02,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794277058] [2021-12-06 21:09:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:02,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:02,413 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:09:02,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166017031] [2021-12-06 21:09:02,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:02,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:02,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:09:02,414 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:09:02,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 21:09:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:02,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 3466 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 21:09:02,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:09:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-12-06 21:09:03,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:09:03,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:03,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794277058] [2021-12-06 21:09:03,166 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:09:03,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166017031] [2021-12-06 21:09:03,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166017031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:03,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:03,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:09:03,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953373014] [2021-12-06 21:09:03,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:03,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:09:03,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:09:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:09:03,167 INFO L87 Difference]: Start difference. First operand 551 states and 823 transitions. Second operand has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-06 21:09:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:05,484 INFO L93 Difference]: Finished difference Result 1007 states and 1518 transitions. [2021-12-06 21:09:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:09:05,485 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) Word has length 290 [2021-12-06 21:09:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:05,488 INFO L225 Difference]: With dead ends: 1007 [2021-12-06 21:09:05,489 INFO L226 Difference]: Without dead ends: 553 [2021-12-06 21:09:05,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:09:05,492 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 771 mSDsluCounter, 3695 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 4247 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:05,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 4247 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 21:09:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-12-06 21:09:05,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 529. [2021-12-06 21:09:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 319 states have (on average 1.2319749216300941) internal successors, (393), 323 states have internal predecessors, (393), 178 states have call successors, (178), 28 states have call predecessors, (178), 30 states have return successors, (209), 178 states have call predecessors, (209), 176 states have call successors, (209) [2021-12-06 21:09:05,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 780 transitions. [2021-12-06 21:09:05,522 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 780 transitions. Word has length 290 [2021-12-06 21:09:05,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:05,522 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 780 transitions. [2021-12-06 21:09:05,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-06 21:09:05,523 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 780 transitions. [2021-12-06 21:09:05,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-12-06 21:09:05,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:05,524 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:09:05,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 21:09:05,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 21:09:05,725 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2072957968, now seen corresponding path program 1 times [2021-12-06 21:09:05,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:05,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778496456] [2021-12-06 21:09:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:05,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:05,811 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:09:05,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483895361] [2021-12-06 21:09:05,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:05,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:05,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:09:05,812 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:09:05,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 21:09:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:06,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 3607 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 21:09:06,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:09:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2021-12-06 21:09:06,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:09:06,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:06,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778496456] [2021-12-06 21:09:06,510 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:09:06,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483895361] [2021-12-06 21:09:06,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483895361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:06,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:06,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:09:06,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995174194] [2021-12-06 21:09:06,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:06,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:09:06,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:06,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:09:06,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:09:06,512 INFO L87 Difference]: Start difference. First operand 529 states and 780 transitions. Second operand has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-06 21:09:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:06,968 INFO L93 Difference]: Finished difference Result 952 states and 1410 transitions. [2021-12-06 21:09:06,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:09:06,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) Word has length 305 [2021-12-06 21:09:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:06,972 INFO L225 Difference]: With dead ends: 952 [2021-12-06 21:09:06,972 INFO L226 Difference]: Without dead ends: 501 [2021-12-06 21:09:06,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 301 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 21:09:06,974 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 2 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:06,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2335 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:09:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-12-06 21:09:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 501. [2021-12-06 21:09:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 302 states have (on average 1.228476821192053) internal successors, (371), 307 states have internal predecessors, (371), 167 states have call successors, (167), 28 states have call predecessors, (167), 30 states have return successors, (195), 166 states have call predecessors, (195), 165 states have call successors, (195) [2021-12-06 21:09:06,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 733 transitions. [2021-12-06 21:09:06,992 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 733 transitions. Word has length 305 [2021-12-06 21:09:06,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:06,992 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 733 transitions. [2021-12-06 21:09:06,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-06 21:09:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 733 transitions. [2021-12-06 21:09:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-12-06 21:09:06,995 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:06,995 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:09:07,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 21:09:07,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 21:09:07,196 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:07,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:07,196 INFO L85 PathProgramCache]: Analyzing trace with hash 631348788, now seen corresponding path program 1 times [2021-12-06 21:09:07,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:07,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323885765] [2021-12-06 21:09:07,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:07,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:07,266 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:09:07,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188624820] [2021-12-06 21:09:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:07,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:07,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:09:07,268 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:09:07,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 21:09:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:07,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 3648 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 21:09:07,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:09:08,739 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 21:09:08,742 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 21:09:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2021-12-06 21:09:08,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:09:08,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:08,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323885765] [2021-12-06 21:09:08,856 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:09:08,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188624820] [2021-12-06 21:09:08,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188624820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:08,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:08,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-06 21:09:08,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131364140] [2021-12-06 21:09:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:08,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 21:09:08,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:08,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 21:09:08,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:09:08,858 INFO L87 Difference]: Start difference. First operand 501 states and 733 transitions. Second operand has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 16 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 9 states have call predecessors, (33), 7 states have call successors, (33) [2021-12-06 21:09:14,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:14,761 INFO L93 Difference]: Finished difference Result 1009 states and 1524 transitions. [2021-12-06 21:09:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 21:09:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 16 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 9 states have call predecessors, (33), 7 states have call successors, (33) Word has length 316 [2021-12-06 21:09:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:14,766 INFO L225 Difference]: With dead ends: 1009 [2021-12-06 21:09:14,766 INFO L226 Difference]: Without dead ends: 573 [2021-12-06 21:09:14,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 295 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-12-06 21:09:14,768 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 117 mSDsluCounter, 7975 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 8594 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 585 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:14,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 8594 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1083 Invalid, 0 Unknown, 585 Unchecked, 5.7s Time] [2021-12-06 21:09:14,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-12-06 21:09:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 540. [2021-12-06 21:09:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 330 states have (on average 1.2181818181818183) internal successors, (402), 335 states have internal predecessors, (402), 173 states have call successors, (173), 32 states have call predecessors, (173), 35 states have return successors, (216), 173 states have call predecessors, (216), 171 states have call successors, (216) [2021-12-06 21:09:14,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 791 transitions. [2021-12-06 21:09:14,789 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 791 transitions. Word has length 316 [2021-12-06 21:09:14,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:14,789 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 791 transitions. [2021-12-06 21:09:14,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 16 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 9 states have call predecessors, (33), 7 states have call successors, (33) [2021-12-06 21:09:14,790 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 791 transitions. [2021-12-06 21:09:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-12-06 21:09:14,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:14,791 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:09:14,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 21:09:14,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 21:09:14,992 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:14,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:14,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2061121970, now seen corresponding path program 1 times [2021-12-06 21:09:14,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:14,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741323800] [2021-12-06 21:09:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:14,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:15,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:09:15,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531191156] [2021-12-06 21:09:15,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:15,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:15,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:09:15,060 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:09:15,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 21:09:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:15,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 3651 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 21:09:15,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:09:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-12-06 21:09:15,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:09:15,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:15,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741323800] [2021-12-06 21:09:15,783 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:09:15,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531191156] [2021-12-06 21:09:15,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531191156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:15,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:15,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:09:15,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778081459] [2021-12-06 21:09:15,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:15,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:09:15,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:15,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:09:15,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:09:15,785 INFO L87 Difference]: Start difference. First operand 540 states and 791 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 21:09:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:15,822 INFO L93 Difference]: Finished difference Result 1037 states and 1585 transitions. [2021-12-06 21:09:15,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:09:15,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 316 [2021-12-06 21:09:15,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:15,826 INFO L225 Difference]: With dead ends: 1037 [2021-12-06 21:09:15,826 INFO L226 Difference]: Without dead ends: 560 [2021-12-06 21:09:15,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:09:15,830 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 8 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:15,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2640 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:09:15,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-12-06 21:09:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 548. [2021-12-06 21:09:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 338 states have (on average 1.2159763313609468) internal successors, (411), 343 states have internal predecessors, (411), 173 states have call successors, (173), 32 states have call predecessors, (173), 35 states have return successors, (216), 173 states have call predecessors, (216), 171 states have call successors, (216) [2021-12-06 21:09:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 800 transitions. [2021-12-06 21:09:15,861 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 800 transitions. Word has length 316 [2021-12-06 21:09:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:15,862 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 800 transitions. [2021-12-06 21:09:15,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 21:09:15,862 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 800 transitions. [2021-12-06 21:09:15,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-12-06 21:09:15,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:15,864 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:09:15,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 21:09:16,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:16,065 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:16,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:16,065 INFO L85 PathProgramCache]: Analyzing trace with hash 116040248, now seen corresponding path program 1 times [2021-12-06 21:09:16,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:16,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471552236] [2021-12-06 21:09:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:16,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:16,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:09:16,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860189980] [2021-12-06 21:09:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:16,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:16,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:09:16,116 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:09:16,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 21:09:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:16,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 3654 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 21:09:16,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:09:17,246 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 21:09:17,248 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 21:09:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-12-06 21:09:17,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:09:17,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:17,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471552236] [2021-12-06 21:09:17,373 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:09:17,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860189980] [2021-12-06 21:09:17,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860189980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:17,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:17,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 21:09:17,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654468574] [2021-12-06 21:09:17,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:17,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 21:09:17,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:17,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 21:09:17,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:09:17,375 INFO L87 Difference]: Start difference. First operand 548 states and 800 transitions. Second operand has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 13 states have internal predecessors, (127), 8 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2021-12-06 21:09:23,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:23,728 INFO L93 Difference]: Finished difference Result 1165 states and 1748 transitions. [2021-12-06 21:09:23,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:09:23,729 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 13 states have internal predecessors, (127), 8 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) Word has length 317 [2021-12-06 21:09:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:23,733 INFO L225 Difference]: With dead ends: 1165 [2021-12-06 21:09:23,733 INFO L226 Difference]: Without dead ends: 657 [2021-12-06 21:09:23,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 302 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-12-06 21:09:23,735 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 124 mSDsluCounter, 5684 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6301 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:23,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 6301 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1368 Invalid, 0 Unknown, 141 Unchecked, 6.2s Time] [2021-12-06 21:09:23,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-12-06 21:09:23,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 614. [2021-12-06 21:09:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 390 states have (on average 1.2102564102564102) internal successors, (472), 396 states have internal predecessors, (472), 180 states have call successors, (180), 36 states have call predecessors, (180), 42 states have return successors, (271), 182 states have call predecessors, (271), 178 states have call successors, (271) [2021-12-06 21:09:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 923 transitions. [2021-12-06 21:09:23,760 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 923 transitions. Word has length 317 [2021-12-06 21:09:23,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:23,760 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 923 transitions. [2021-12-06 21:09:23,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 13 states have internal predecessors, (127), 8 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2021-12-06 21:09:23,760 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 923 transitions. [2021-12-06 21:09:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-12-06 21:09:23,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:23,762 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:23,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 21:09:23,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:23,963 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:23,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1234369862, now seen corresponding path program 1 times [2021-12-06 21:09:23,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:23,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447151980] [2021-12-06 21:09:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:23,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:24,046 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:09:24,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611620290] [2021-12-06 21:09:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:24,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:24,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:09:24,048 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:09:24,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 21:09:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:24,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 3649 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:09:24,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:09:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-12-06 21:09:24,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:09:24,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:24,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447151980] [2021-12-06 21:09:24,782 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:09:24,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611620290] [2021-12-06 21:09:24,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611620290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:24,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:24,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:09:24,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898752344] [2021-12-06 21:09:24,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:24,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:09:24,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:24,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:09:24,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:09:24,784 INFO L87 Difference]: Start difference. First operand 614 states and 923 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 21:09:24,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:24,816 INFO L93 Difference]: Finished difference Result 1195 states and 1913 transitions. [2021-12-06 21:09:24,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:09:24,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 317 [2021-12-06 21:09:24,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:24,821 INFO L225 Difference]: With dead ends: 1195 [2021-12-06 21:09:24,821 INFO L226 Difference]: Without dead ends: 617 [2021-12-06 21:09:24,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 315 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 21:09:24,826 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 7 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1921 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 21:09:24,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1921 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:09:24,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-12-06 21:09:24,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 614. [2021-12-06 21:09:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 390 states have (on average 1.2076923076923076) internal successors, (471), 396 states have internal predecessors, (471), 180 states have call successors, (180), 36 states have call predecessors, (180), 42 states have return successors, (271), 182 states have call predecessors, (271), 178 states have call successors, (271) [2021-12-06 21:09:24,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 922 transitions. [2021-12-06 21:09:24,860 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 922 transitions. Word has length 317 [2021-12-06 21:09:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:24,860 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 922 transitions. [2021-12-06 21:09:24,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 21:09:24,860 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 922 transitions. [2021-12-06 21:09:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-12-06 21:09:24,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:24,862 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:09:24,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 21:09:25,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:25,063 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:25,065 INFO L85 PathProgramCache]: Analyzing trace with hash 618587704, now seen corresponding path program 1 times [2021-12-06 21:09:25,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:25,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539703799] [2021-12-06 21:09:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:25,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:25,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:09:25,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093568738] [2021-12-06 21:09:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:25,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:25,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:09:25,150 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:09:25,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 21:09:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:25,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 3674 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:09:25,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:09:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-12-06 21:09:25,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:09:25,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:25,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539703799] [2021-12-06 21:09:25,972 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:09:25,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093568738] [2021-12-06 21:09:25,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093568738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:25,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:25,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:09:25,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454371009] [2021-12-06 21:09:25,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:25,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:09:25,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:09:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:09:25,973 INFO L87 Difference]: Start difference. First operand 614 states and 922 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 21:09:27,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:27,198 INFO L93 Difference]: Finished difference Result 1199 states and 1933 transitions. [2021-12-06 21:09:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:09:27,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 321 [2021-12-06 21:09:27,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:27,202 INFO L225 Difference]: With dead ends: 1199 [2021-12-06 21:09:27,202 INFO L226 Difference]: Without dead ends: 621 [2021-12-06 21:09:27,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 317 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 21:09:27,206 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 15 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:27,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 2460 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 21:09:27,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-12-06 21:09:27,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 615. [2021-12-06 21:09:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 391 states have (on average 1.207161125319693) internal successors, (472), 397 states have internal predecessors, (472), 180 states have call successors, (180), 36 states have call predecessors, (180), 42 states have return successors, (271), 182 states have call predecessors, (271), 178 states have call successors, (271) [2021-12-06 21:09:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 923 transitions. [2021-12-06 21:09:27,230 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 923 transitions. Word has length 321 [2021-12-06 21:09:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:27,231 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 923 transitions. [2021-12-06 21:09:27,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 21:09:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 923 transitions. [2021-12-06 21:09:27,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-12-06 21:09:27,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:27,233 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:27,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 21:09:27,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:27,434 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash 660650014, now seen corresponding path program 1 times [2021-12-06 21:09:27,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:27,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122153290] [2021-12-06 21:09:27,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:27,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:27,521 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:09:27,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058490607] [2021-12-06 21:09:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:27,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:27,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:09:27,522 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:09:27,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 21:09:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:28,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 3659 conjuncts, 139 conjunts are in the unsatisfiable core [2021-12-06 21:09:28,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:09:28,183 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 21:09:28,439 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 21:09:28,439 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 21:09:28,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:09:28,443 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 21:09:30,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:09:30,093 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 21:09:30,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:09:30,101 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 21:09:32,237 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7507 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7507))) (exists ((v_ArrVal_7506 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7506) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 21:09:32,501 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 21:09:32,509 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7510 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7509 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7510)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7509)))) is different from true [2021-12-06 21:09:32,903 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 21:09:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 296 proven. 20 refuted. 0 times theorem prover too weak. 329 trivial. 3 not checked. [2021-12-06 21:09:33,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:10:11,672 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 21:10:11,717 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-06 21:10:11,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 21:10:11,725 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:10:11,725 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 40 treesize of output 44 [2021-12-06 21:10:12,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:10:12,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122153290] [2021-12-06 21:10:12,147 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:10:12,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058490607] [2021-12-06 21:10:12,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058490607] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:10:12,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:10:12,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-12-06 21:10:12,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307460204] [2021-12-06 21:10:12,148 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:10:12,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 21:10:12,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:10:12,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 21:10:12,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1861, Unknown=73, NotChecked=178, Total=2256 [2021-12-06 21:10:12,149 INFO L87 Difference]: Start difference. First operand 615 states and 923 transitions. Second operand has 32 states, 29 states have (on average 4.655172413793103) internal successors, (135), 29 states have internal predecessors, (135), 13 states have call successors, (38), 7 states have call predecessors, (38), 11 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) [2021-12-06 21:10:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:10:15,258 INFO L93 Difference]: Finished difference Result 1385 states and 2227 transitions. [2021-12-06 21:10:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 21:10:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.655172413793103) internal successors, (135), 29 states have internal predecessors, (135), 13 states have call successors, (38), 7 states have call predecessors, (38), 11 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) Word has length 319 [2021-12-06 21:10:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:10:15,265 INFO L225 Difference]: With dead ends: 1385 [2021-12-06 21:10:15,265 INFO L226 Difference]: Without dead ends: 806 [2021-12-06 21:10:15,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 496 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=260, Invalid=3436, Unknown=94, NotChecked=242, Total=4032 [2021-12-06 21:10:15,271 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 492 mSDsluCounter, 4991 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 5597 SdHoareTripleChecker+Invalid, 9827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6363 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:10:15,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 5597 Invalid, 9827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2757 Invalid, 0 Unknown, 6363 Unchecked, 2.4s Time] [2021-12-06 21:10:15,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-12-06 21:10:15,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 660. [2021-12-06 21:10:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 427 states have (on average 1.2084309133489461) internal successors, (516), 434 states have internal predecessors, (516), 182 states have call successors, (182), 39 states have call predecessors, (182), 49 states have return successors, (317), 187 states have call predecessors, (317), 180 states have call successors, (317) [2021-12-06 21:10:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1015 transitions. [2021-12-06 21:10:15,301 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1015 transitions. Word has length 319 [2021-12-06 21:10:15,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:10:15,302 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 1015 transitions. [2021-12-06 21:10:15,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.655172413793103) internal successors, (135), 29 states have internal predecessors, (135), 13 states have call successors, (38), 7 states have call predecessors, (38), 11 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) [2021-12-06 21:10:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1015 transitions. [2021-12-06 21:10:15,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-12-06 21:10:15,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:10:15,304 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:10:15,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 21:10:15,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 21:10:15,505 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:10:15,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:10:15,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1120677021, now seen corresponding path program 1 times [2021-12-06 21:10:15,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:10:15,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060608416] [2021-12-06 21:10:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:15,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:10:15,566 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:10:15,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74638378] [2021-12-06 21:10:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:15,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:10:15,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:10:15,567 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:10:15,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 21:10:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:16,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 3681 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:10:16,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:10:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2021-12-06 21:10:16,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:10:16,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:10:16,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060608416] [2021-12-06 21:10:16,369 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:10:16,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74638378] [2021-12-06 21:10:16,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74638378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:10:16,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:10:16,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:10:16,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480902707] [2021-12-06 21:10:16,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:10:16,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:10:16,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:10:16,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:10:16,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:10:16,371 INFO L87 Difference]: Start difference. First operand 660 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 21:10:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:10:16,424 INFO L93 Difference]: Finished difference Result 1268 states and 2036 transitions. [2021-12-06 21:10:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:10:16,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 339 [2021-12-06 21:10:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:10:16,430 INFO L225 Difference]: With dead ends: 1268 [2021-12-06 21:10:16,430 INFO L226 Difference]: Without dead ends: 651 [2021-12-06 21:10:16,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 337 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 21:10:16,433 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 2 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:10:16,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1918 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:10:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-12-06 21:10:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 644. [2021-12-06 21:10:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 411 states have (on average 1.194647201946472) internal successors, (491), 418 states have internal predecessors, (491), 182 states have call successors, (182), 39 states have call predecessors, (182), 49 states have return successors, (317), 187 states have call predecessors, (317), 180 states have call successors, (317) [2021-12-06 21:10:16,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 990 transitions. [2021-12-06 21:10:16,462 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 990 transitions. Word has length 339 [2021-12-06 21:10:16,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:10:16,462 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 990 transitions. [2021-12-06 21:10:16,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 21:10:16,462 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 990 transitions. [2021-12-06 21:10:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-12-06 21:10:16,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:10:16,464 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:10:16,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 21:10:16,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 21:10:16,666 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:10:16,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:10:16,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2132838399, now seen corresponding path program 1 times [2021-12-06 21:10:16,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:10:16,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540511527] [2021-12-06 21:10:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:16,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:10:16,758 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:10:16,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922034059] [2021-12-06 21:10:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:16,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:10:16,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:10:16,759 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:10:16,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 21:10:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:17,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 3668 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 21:10:17,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:10:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-12-06 21:10:17,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:10:17,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:10:17,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540511527] [2021-12-06 21:10:17,635 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:10:17,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922034059] [2021-12-06 21:10:17,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922034059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:10:17,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:10:17,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 21:10:17,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129990726] [2021-12-06 21:10:17,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:10:17,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 21:10:17,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:10:17,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 21:10:17,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:10:17,637 INFO L87 Difference]: Start difference. First operand 644 states and 990 transitions. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 9 states have internal predecessors, (128), 2 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (33), 5 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-06 21:10:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:10:17,741 INFO L93 Difference]: Finished difference Result 1277 states and 2056 transitions. [2021-12-06 21:10:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:10:17,742 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 9 states have internal predecessors, (128), 2 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (33), 5 states have call predecessors, (33), 2 states have call successors, (33) Word has length 327 [2021-12-06 21:10:17,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:10:17,747 INFO L225 Difference]: With dead ends: 1277 [2021-12-06 21:10:17,747 INFO L226 Difference]: Without dead ends: 676 [2021-12-06 21:10:17,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:10:17,750 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 18 mSDsluCounter, 6616 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 7281 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:10:17,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 7281 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:10:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-12-06 21:10:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 657. [2021-12-06 21:10:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 423 states have (on average 1.1914893617021276) internal successors, (504), 428 states have internal predecessors, (504), 182 states have call successors, (182), 39 states have call predecessors, (182), 50 states have return successors, (337), 190 states have call predecessors, (337), 180 states have call successors, (337) [2021-12-06 21:10:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1023 transitions. [2021-12-06 21:10:17,780 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1023 transitions. Word has length 327 [2021-12-06 21:10:17,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:10:17,780 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1023 transitions. [2021-12-06 21:10:17,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 9 states have internal predecessors, (128), 2 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (33), 5 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-06 21:10:17,781 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1023 transitions. [2021-12-06 21:10:17,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-12-06 21:10:17,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:10:17,783 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:10:17,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 21:10:17,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 21:10:17,983 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:10:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:10:17,984 INFO L85 PathProgramCache]: Analyzing trace with hash -905609644, now seen corresponding path program 1 times [2021-12-06 21:10:17,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:10:17,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207438223] [2021-12-06 21:10:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:17,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:10:18,039 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:10:18,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605908379] [2021-12-06 21:10:18,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:18,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:10:18,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:10:18,040 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:10:18,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 21:10:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:18,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 3677 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-06 21:10:18,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:10:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 207 proven. 1 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2021-12-06 21:10:18,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:10:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 76 proven. 13 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2021-12-06 21:10:19,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:10:19,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207438223] [2021-12-06 21:10:19,646 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:10:19,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605908379] [2021-12-06 21:10:19,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605908379] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:10:19,646 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:10:19,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2021-12-06 21:10:19,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844609551] [2021-12-06 21:10:19,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:10:19,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 21:10:19,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:10:19,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 21:10:19,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-12-06 21:10:19,648 INFO L87 Difference]: Start difference. First operand 657 states and 1023 transitions. Second operand has 22 states, 18 states have (on average 7.611111111111111) internal successors, (137), 15 states have internal predecessors, (137), 6 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (39), 8 states have call predecessors, (39), 5 states have call successors, (39) [2021-12-06 21:10:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:10:20,259 INFO L93 Difference]: Finished difference Result 1173 states and 1889 transitions. [2021-12-06 21:10:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:10:20,260 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.611111111111111) internal successors, (137), 15 states have internal predecessors, (137), 6 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (39), 8 states have call predecessors, (39), 5 states have call successors, (39) Word has length 335 [2021-12-06 21:10:20,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:10:20,264 INFO L225 Difference]: With dead ends: 1173 [2021-12-06 21:10:20,264 INFO L226 Difference]: Without dead ends: 664 [2021-12-06 21:10:20,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 647 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-12-06 21:10:20,267 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 13 mSDsluCounter, 11153 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 11784 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:10:20,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 11784 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 21:10:20,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-12-06 21:10:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 657. [2021-12-06 21:10:20,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 423 states have (on average 1.1914893617021276) internal successors, (504), 428 states have internal predecessors, (504), 182 states have call successors, (182), 39 states have call predecessors, (182), 50 states have return successors, (332), 190 states have call predecessors, (332), 180 states have call successors, (332) [2021-12-06 21:10:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1018 transitions. [2021-12-06 21:10:20,299 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1018 transitions. Word has length 335 [2021-12-06 21:10:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:10:20,299 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1018 transitions. [2021-12-06 21:10:20,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.611111111111111) internal successors, (137), 15 states have internal predecessors, (137), 6 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (39), 8 states have call predecessors, (39), 5 states have call successors, (39) [2021-12-06 21:10:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1018 transitions. [2021-12-06 21:10:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-12-06 21:10:20,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:10:20,301 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:10:20,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-06 21:10:20,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 21:10:20,502 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:10:20,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:10:20,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1487346014, now seen corresponding path program 2 times [2021-12-06 21:10:20,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:10:20,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450875702] [2021-12-06 21:10:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:20,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:10:20,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:10:20,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520518569] [2021-12-06 21:10:20,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:10:20,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:10:20,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:10:20,556 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:10:20,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 21:10:21,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 21:10:21,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:10:21,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-06 21:10:21,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:10:21,629 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 21:10:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2021-12-06 21:10:21,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:10:21,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:10:21,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450875702] [2021-12-06 21:10:21,787 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:10:21,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520518569] [2021-12-06 21:10:21,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520518569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:10:21,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:10:21,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 21:10:21,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009056984] [2021-12-06 21:10:21,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:10:21,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:10:21,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:10:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:10:21,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:10:21,789 INFO L87 Difference]: Start difference. First operand 657 states and 1018 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2021-12-06 21:10:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:10:25,827 INFO L93 Difference]: Finished difference Result 1313 states and 2146 transitions. [2021-12-06 21:10:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:10:25,827 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) Word has length 323 [2021-12-06 21:10:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:10:25,832 INFO L225 Difference]: With dead ends: 1313 [2021-12-06 21:10:25,832 INFO L226 Difference]: Without dead ends: 699 [2021-12-06 21:10:25,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-12-06 21:10:25,835 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 127 mSDsluCounter, 4487 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5084 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:10:25,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 5084 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 21:10:25,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-06 21:10:25,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 645. [2021-12-06 21:10:25,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 412 states have (on average 1.191747572815534) internal successors, (491), 416 states have internal predecessors, (491), 182 states have call successors, (182), 39 states have call predecessors, (182), 49 states have return successors, (318), 190 states have call predecessors, (318), 180 states have call successors, (318) [2021-12-06 21:10:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 991 transitions. [2021-12-06 21:10:25,862 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 991 transitions. Word has length 323 [2021-12-06 21:10:25,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:10:25,862 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 991 transitions. [2021-12-06 21:10:25,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2021-12-06 21:10:25,862 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 991 transitions. [2021-12-06 21:10:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-12-06 21:10:25,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:10:25,864 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:10:25,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 21:10:26,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:10:26,066 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:10:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:10:26,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1369162910, now seen corresponding path program 1 times [2021-12-06 21:10:26,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:10:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215291507] [2021-12-06 21:10:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:26,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:10:26,170 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:10:26,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034920392] [2021-12-06 21:10:26,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:26,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:10:26,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:10:26,171 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:10:26,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 21:10:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:26,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 127 conjunts are in the unsatisfiable core [2021-12-06 21:10:26,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:10:26,861 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 21:10:27,088 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 21:10:27,088 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 21:10:27,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:10:27,092 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 21:10:40,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:10:40,879 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 21:10:40,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:10:40,883 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 21:10:40,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:10:40,894 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 21:10:40,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:10:40,899 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 21:10:43,970 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9491 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9491))) (exists ((v_ArrVal_9490 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9490) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 21:10:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 297 proven. 37 refuted. 3 times theorem prover too weak. 317 trivial. 0 not checked. [2021-12-06 21:10:45,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:10:46,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:10:46,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215291507] [2021-12-06 21:10:46,621 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:10:46,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034920392] [2021-12-06 21:10:46,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034920392] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:10:46,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:10:46,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-12-06 21:10:46,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949230945] [2021-12-06 21:10:46,621 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:10:46,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 21:10:46,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:10:46,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 21:10:46,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1122, Unknown=30, NotChecked=68, Total=1332 [2021-12-06 21:10:46,623 INFO L87 Difference]: Start difference. First operand 645 states and 991 transitions. Second operand has 30 states, 27 states have (on average 5.555555555555555) internal successors, (150), 26 states have internal predecessors, (150), 13 states have call successors, (38), 7 states have call predecessors, (38), 10 states have return successors, (36), 9 states have call predecessors, (36), 13 states have call successors, (36) [2021-12-06 21:11:08,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:11:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:11:11,710 INFO L93 Difference]: Finished difference Result 1517 states and 2469 transitions. [2021-12-06 21:11:11,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 21:11:11,711 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 5.555555555555555) internal successors, (150), 26 states have internal predecessors, (150), 13 states have call successors, (38), 7 states have call predecessors, (38), 10 states have return successors, (36), 9 states have call predecessors, (36), 13 states have call successors, (36) Word has length 323 [2021-12-06 21:11:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:11:11,717 INFO L225 Difference]: With dead ends: 1517 [2021-12-06 21:11:11,717 INFO L226 Difference]: Without dead ends: 949 [2021-12-06 21:11:11,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 489 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=207, Invalid=1991, Unknown=62, NotChecked=92, Total=2352 [2021-12-06 21:11:11,720 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 398 mSDsluCounter, 5901 mSDsCounter, 0 mSdLazyCounter, 4456 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 6550 SdHoareTripleChecker+Invalid, 10372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 4456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5401 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:11:11,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 6550 Invalid, 10372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 4456 Invalid, 0 Unknown, 5401 Unchecked, 4.8s Time] [2021-12-06 21:11:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-12-06 21:11:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 668. [2021-12-06 21:11:11,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 430 states have (on average 1.1930232558139535) internal successors, (513), 435 states have internal predecessors, (513), 185 states have call successors, (185), 39 states have call predecessors, (185), 51 states have return successors, (346), 194 states have call predecessors, (346), 183 states have call successors, (346) [2021-12-06 21:11:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1044 transitions. [2021-12-06 21:11:11,758 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1044 transitions. Word has length 323 [2021-12-06 21:11:11,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:11:11,758 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1044 transitions. [2021-12-06 21:11:11,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 5.555555555555555) internal successors, (150), 26 states have internal predecessors, (150), 13 states have call successors, (38), 7 states have call predecessors, (38), 10 states have return successors, (36), 9 states have call predecessors, (36), 13 states have call successors, (36) [2021-12-06 21:11:11,758 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1044 transitions. [2021-12-06 21:11:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-12-06 21:11:11,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:11:11,761 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:11,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 21:11:11,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 21:11:11,962 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:11:11,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:11:11,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1776783095, now seen corresponding path program 1 times [2021-12-06 21:11:11,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:11:11,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176618047] [2021-12-06 21:11:11,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:11:11,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:11:12,035 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:11:12,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844444042] [2021-12-06 21:11:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:11:12,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:11:12,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:11:12,036 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:11:12,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 21:11:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:12,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 3708 conjuncts, 215 conjunts are in the unsatisfiable core [2021-12-06 21:11:12,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:11:15,069 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9931 Int) (v_ArrVal_9932 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9931))) (= |c_#memory_$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_9932))))) is different from true [2021-12-06 21:11:17,092 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9931 Int) (v_ArrVal_9932 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_9931)) |c_#memory_$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|) 0 v_ArrVal_9932))))) is different from true [2021-12-06 21:11:17,170 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 21:11:17,170 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 33 treesize of output 42 [2021-12-06 21:11:17,185 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 21:11:17,186 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 27 treesize of output 36 [2021-12-06 21:11:17,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:11:17,716 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 102 treesize of output 90 [2021-12-06 21:11:17,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:11:17,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 153 [2021-12-06 21:11:17,744 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 21:11:17,744 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 28 treesize of output 34 [2021-12-06 21:11:17,757 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 21:11:17,757 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 26 treesize of output 32 [2021-12-06 21:11:17,763 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 21:11:17,774 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 8 treesize of output 4 [2021-12-06 21:11:17,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 50 [2021-12-06 21:11:17,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 66 [2021-12-06 21:11:19,351 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9971 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9971)))) (exists ((v_ArrVal_9967 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9967))) (exists ((v_ArrVal_9969 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9969))))) is different from true [2021-12-06 21:11:44,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:11:44,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:11:44,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2021-12-06 21:11:44,942 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 28 treesize of output 20 [2021-12-06 21:11:44,948 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 20 treesize of output 12 [2021-12-06 21:11:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 410 proven. 96 refuted. 15 times theorem prover too weak. 123 trivial. 19 not checked. [2021-12-06 21:11:45,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:11:46,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:11:46,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176618047] [2021-12-06 21:11:46,892 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:11:46,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844444042] [2021-12-06 21:11:46,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844444042] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:11:46,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:11:46,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-12-06 21:11:46,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041997432] [2021-12-06 21:11:46,893 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:11:46,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 21:11:46,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:11:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 21:11:46,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2012, Unknown=17, NotChecked=276, Total=2450 [2021-12-06 21:11:46,895 INFO L87 Difference]: Start difference. First operand 668 states and 1044 transitions. Second operand has 41 states, 37 states have (on average 4.648648648648648) internal successors, (172), 35 states have internal predecessors, (172), 17 states have call successors, (42), 7 states have call predecessors, (42), 12 states have return successors, (40), 16 states have call predecessors, (40), 17 states have call successors, (40) [2021-12-06 21:11:47,435 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9971 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9971)))) (exists ((v_ArrVal_9967 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9967))) (exists ((v_ArrVal_9969 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9969)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9931 Int) (v_ArrVal_9932 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9931))) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9932)))))) is different from true [2021-12-06 21:11:57,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:12:05,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:12:05,159 INFO L93 Difference]: Finished difference Result 1873 states and 3202 transitions. [2021-12-06 21:12:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-12-06 21:12:05,160 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 4.648648648648648) internal successors, (172), 35 states have internal predecessors, (172), 17 states have call successors, (42), 7 states have call predecessors, (42), 12 states have return successors, (40), 16 states have call predecessors, (40), 17 states have call successors, (40) Word has length 329 [2021-12-06 21:12:05,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:12:05,171 INFO L225 Difference]: With dead ends: 1873 [2021-12-06 21:12:05,171 INFO L226 Difference]: Without dead ends: 1339 [2021-12-06 21:12:05,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 356 SyntacticMatches, 10 SemanticMatches, 73 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 33.5s TimeCoverageRelationStatistics Valid=344, Invalid=4624, Unknown=18, NotChecked=564, Total=5550 [2021-12-06 21:12:05,177 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 465 mSDsluCounter, 10027 mSDsCounter, 0 mSdLazyCounter, 8297 mSolverCounterSat, 559 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 10691 SdHoareTripleChecker+Invalid, 17945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 8297 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 9088 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:12:05,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 10691 Invalid, 17945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 8297 Invalid, 1 Unknown, 9088 Unchecked, 12.9s Time] [2021-12-06 21:12:05,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2021-12-06 21:12:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 974. [2021-12-06 21:12:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 673 states have (on average 1.173848439821694) internal successors, (790), 679 states have internal predecessors, (790), 218 states have call successors, (218), 57 states have call predecessors, (218), 81 states have return successors, (599), 238 states have call predecessors, (599), 216 states have call successors, (599) [2021-12-06 21:12:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1607 transitions. [2021-12-06 21:12:05,262 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1607 transitions. Word has length 329 [2021-12-06 21:12:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:12:05,262 INFO L470 AbstractCegarLoop]: Abstraction has 974 states and 1607 transitions. [2021-12-06 21:12:05,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 4.648648648648648) internal successors, (172), 35 states have internal predecessors, (172), 17 states have call successors, (42), 7 states have call predecessors, (42), 12 states have return successors, (40), 16 states have call predecessors, (40), 17 states have call successors, (40) [2021-12-06 21:12:05,262 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1607 transitions. [2021-12-06 21:12:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-12-06 21:12:05,265 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:12:05,265 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:12:05,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-06 21:12:05,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 21:12:05,467 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:12:05,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:12:05,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1684514038, now seen corresponding path program 1 times [2021-12-06 21:12:05,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:12:05,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311053426] [2021-12-06 21:12:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:12:05,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:12:05,562 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:12:05,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120835719] [2021-12-06 21:12:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:12:05,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:12:05,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:12:05,563 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:12:05,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 21:12:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:12:06,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 3712 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:12:06,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:12:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-12-06 21:12:06,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:12:06,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:12:06,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311053426] [2021-12-06 21:12:06,483 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:12:06,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120835719] [2021-12-06 21:12:06,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120835719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:12:06,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:12:06,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:12:06,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382965032] [2021-12-06 21:12:06,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:12:06,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:12:06,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:12:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:12:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:12:06,484 INFO L87 Difference]: Start difference. First operand 974 states and 1607 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-06 21:12:07,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:12:07,288 INFO L93 Difference]: Finished difference Result 1827 states and 3244 transitions. [2021-12-06 21:12:07,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:12:07,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 337 [2021-12-06 21:12:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:12:07,295 INFO L225 Difference]: With dead ends: 1827 [2021-12-06 21:12:07,295 INFO L226 Difference]: Without dead ends: 964 [2021-12-06 21:12:07,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:12:07,299 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 7 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:12:07,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2475 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:12:07,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2021-12-06 21:12:07,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 960. [2021-12-06 21:12:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 660 states have (on average 1.1666666666666667) internal successors, (770), 666 states have internal predecessors, (770), 218 states have call successors, (218), 57 states have call predecessors, (218), 80 states have return successors, (558), 237 states have call predecessors, (558), 216 states have call successors, (558) [2021-12-06 21:12:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1546 transitions. [2021-12-06 21:12:07,352 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1546 transitions. Word has length 337 [2021-12-06 21:12:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:12:07,353 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 1546 transitions. [2021-12-06 21:12:07,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-06 21:12:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1546 transitions. [2021-12-06 21:12:07,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-12-06 21:12:07,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:12:07,356 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:12:07,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-06 21:12:07,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 21:12:07,558 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:12:07,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:12:07,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1898287057, now seen corresponding path program 2 times [2021-12-06 21:12:07,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:12:07,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547373497] [2021-12-06 21:12:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:12:07,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:12:07,654 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:12:07,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2000386745] [2021-12-06 21:12:07,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:12:07,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:12:07,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:12:07,655 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:12:07,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 21:12:08,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 21:12:08,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:12:08,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 3713 conjuncts, 150 conjunts are in the unsatisfiable core [2021-12-06 21:12:08,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:12:11,341 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10826 Int) (v_ArrVal_10825 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10826)) |c_#memory_$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_10825))))) is different from true [2021-12-06 21:12:13,366 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10826 Int) (v_ArrVal_10825 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_10825))) (= |c_#memory_$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_10826))))) is different from true [2021-12-06 21:12:13,444 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 21:12:13,444 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 33 treesize of output 42 [2021-12-06 21:12:13,459 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 21:12:13,459 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 27 treesize of output 36 [2021-12-06 21:12:16,126 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10830 Int) (v_ArrVal_10832 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10832))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10830)) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 21:12:18,149 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10830 Int) (v_ArrVal_10832 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_10830))) (= |c_#memory_$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_10832))))) is different from true [2021-12-06 21:12:18,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:12:18,195 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 33 treesize of output 32 [2021-12-06 21:12:18,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:12:18,197 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 33 treesize of output 32 [2021-12-06 21:12:20,399 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10833 Int) (v_ArrVal_10835 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10833))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10835)) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 21:12:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 332 proven. 7 refuted. 0 times theorem prover too weak. 284 trivial. 46 not checked. [2021-12-06 21:12:49,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:12:51,611 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10849 Int) (v_ArrVal_10850 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_282| Int)) (let ((.cse0 (+ 32 c_aws_array_list_length_~list.offset))) (or (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_282| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_282|) 0 v_ArrVal_10849)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_282| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_282|) 0 v_ArrVal_10850)) c_aws_array_list_length_~list.base) .cse0) 0))))) is different from false [2021-12-06 21:12:51,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:12:51,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547373497] [2021-12-06 21:12:51,614 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:12:51,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000386745] [2021-12-06 21:12:51,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000386745] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:12:51,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:12:51,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-12-06 21:12:51,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481044162] [2021-12-06 21:12:51,614 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:12:51,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 21:12:51,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:12:51,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 21:12:51,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=580, Unknown=15, NotChecked=318, Total=992 [2021-12-06 21:12:51,615 INFO L87 Difference]: Start difference. First operand 960 states and 1546 transitions. Second operand has 31 states, 28 states have (on average 5.5) internal successors, (154), 29 states have internal predecessors, (154), 13 states have call successors, (38), 5 states have call predecessors, (38), 10 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) [2021-12-06 21:12:53,890 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10833 Int) (v_ArrVal_10835 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10833))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10835)) |c_#memory_$Pointer$.base|))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10826 Int) (v_ArrVal_10825 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10826)) |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10825))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10830 Int) (v_ArrVal_10832 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10832))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10830)) |c_#memory_$Pointer$.base|)))) is different from true [2021-12-06 21:13:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:13:39,905 INFO L93 Difference]: Finished difference Result 1962 states and 3286 transitions. [2021-12-06 21:13:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 21:13:39,906 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 5.5) internal successors, (154), 29 states have internal predecessors, (154), 13 states have call successors, (38), 5 states have call predecessors, (38), 10 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) Word has length 331 [2021-12-06 21:13:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:13:39,914 INFO L225 Difference]: With dead ends: 1962 [2021-12-06 21:13:39,914 INFO L226 Difference]: Without dead ends: 1282 [2021-12-06 21:13:39,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 302 SyntacticMatches, 15 SemanticMatches, 48 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 84.2s TimeCoverageRelationStatistics Valid=213, Invalid=1595, Unknown=26, NotChecked=616, Total=2450 [2021-12-06 21:13:39,917 INFO L933 BasicCegarLoop]: 689 mSDtfsCounter, 390 mSDsluCounter, 5950 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 6639 SdHoareTripleChecker+Invalid, 10482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6314 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:13:39,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 6639 Invalid, 10482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 3904 Invalid, 0 Unknown, 6314 Unchecked, 5.5s Time] [2021-12-06 21:13:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-12-06 21:13:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1033. [2021-12-06 21:13:39,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 717 states have (on average 1.1631799163179917) internal successors, (834), 723 states have internal predecessors, (834), 230 states have call successors, (230), 60 states have call predecessors, (230), 84 states have return successors, (583), 250 states have call predecessors, (583), 228 states have call successors, (583) [2021-12-06 21:13:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1647 transitions. [2021-12-06 21:13:39,982 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1647 transitions. Word has length 331 [2021-12-06 21:13:39,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:13:39,982 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1647 transitions. [2021-12-06 21:13:39,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 5.5) internal successors, (154), 29 states have internal predecessors, (154), 13 states have call successors, (38), 5 states have call predecessors, (38), 10 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) [2021-12-06 21:13:39,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1647 transitions. [2021-12-06 21:13:39,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-12-06 21:13:39,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:13:39,986 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:13:40,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-06 21:13:40,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:13:40,187 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:13:40,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:13:40,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1879194674, now seen corresponding path program 2 times [2021-12-06 21:13:40,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:13:40,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109192229] [2021-12-06 21:13:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:13:40,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:13:40,288 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:13:40,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265733311] [2021-12-06 21:13:40,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:13:40,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:13:40,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:13:40,289 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:13:40,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 21:13:41,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 21:13:41,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:13:41,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 3712 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 21:13:41,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:13:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 356 proven. 11 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-06 21:13:41,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:13:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 91 proven. 45 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2021-12-06 21:13:42,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:13:42,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109192229] [2021-12-06 21:13:42,569 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:13:42,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265733311] [2021-12-06 21:13:42,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265733311] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:13:42,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:13:42,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 30 [2021-12-06 21:13:42,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928647414] [2021-12-06 21:13:42,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:13:42,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 21:13:42,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:13:42,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 21:13:42,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2021-12-06 21:13:42,571 INFO L87 Difference]: Start difference. First operand 1033 states and 1647 transitions. Second operand has 30 states, 26 states have (on average 6.538461538461538) internal successors, (170), 21 states have internal predecessors, (170), 8 states have call successors, (45), 3 states have call predecessors, (45), 10 states have return successors, (47), 12 states have call predecessors, (47), 7 states have call successors, (47) [2021-12-06 21:13:43,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:13:43,391 INFO L93 Difference]: Finished difference Result 1862 states and 3080 transitions. [2021-12-06 21:13:43,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 21:13:43,391 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 6.538461538461538) internal successors, (170), 21 states have internal predecessors, (170), 8 states have call successors, (45), 3 states have call predecessors, (45), 10 states have return successors, (47), 12 states have call predecessors, (47), 7 states have call successors, (47) Word has length 335 [2021-12-06 21:13:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:13:43,398 INFO L225 Difference]: With dead ends: 1862 [2021-12-06 21:13:43,398 INFO L226 Difference]: Without dead ends: 1090 [2021-12-06 21:13:43,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 639 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 21:13:43,401 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 41 mSDsluCounter, 11133 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 11796 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:13:43,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 11796 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:13:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-12-06 21:13:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1005. [2021-12-06 21:13:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 695 states have (on average 1.1669064748201439) internal successors, (811), 698 states have internal predecessors, (811), 226 states have call successors, (226), 60 states have call predecessors, (226), 82 states have return successors, (558), 247 states have call predecessors, (558), 224 states have call successors, (558) [2021-12-06 21:13:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1595 transitions. [2021-12-06 21:13:43,449 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1595 transitions. Word has length 335 [2021-12-06 21:13:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:13:43,450 INFO L470 AbstractCegarLoop]: Abstraction has 1005 states and 1595 transitions. [2021-12-06 21:13:43,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 6.538461538461538) internal successors, (170), 21 states have internal predecessors, (170), 8 states have call successors, (45), 3 states have call predecessors, (45), 10 states have return successors, (47), 12 states have call predecessors, (47), 7 states have call successors, (47) [2021-12-06 21:13:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1595 transitions. [2021-12-06 21:13:43,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-12-06 21:13:43,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:13:43,459 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 21:13:43,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-06 21:13:43,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-06 21:13:43,661 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:13:43,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:13:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash -961595247, now seen corresponding path program 3 times [2021-12-06 21:13:43,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:13:43,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117553620] [2021-12-06 21:13:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:13:43,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:13:43,752 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:13:43,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966880995] [2021-12-06 21:13:43,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 21:13:43,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:13:43,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:13:43,753 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:13:43,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 21:13:45,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 21:13:45,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:13:45,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 2171 conjuncts, 153 conjunts are in the unsatisfiable core [2021-12-06 21:13:45,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:13:45,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:13:45,398 INFO L354 Elim1Store]: treesize reduction 64, result has 42.3 percent of original size [2021-12-06 21:13:45,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 59 [2021-12-06 21:14:13,393 INFO L354 Elim1Store]: treesize reduction 56, result has 56.6 percent of original size [2021-12-06 21:14:13,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 296 treesize of output 248 [2021-12-06 21:14:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 179 proven. 6 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-12-06 21:14:14,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:14:30,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:14:30,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117553620] [2021-12-06 21:14:30,148 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:14:30,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966880995] [2021-12-06 21:14:30,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966880995] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:14:30,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:14:30,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-12-06 21:14:30,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085441089] [2021-12-06 21:14:30,148 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:14:30,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 21:14:30,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:14:30,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 21:14:30,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=839, Unknown=4, NotChecked=0, Total=930 [2021-12-06 21:14:30,150 INFO L87 Difference]: Start difference. First operand 1005 states and 1595 transitions. Second operand has 27 states, 23 states have (on average 5.043478260869565) internal successors, (116), 20 states have internal predecessors, (116), 7 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (33), 7 states have call predecessors, (33), 6 states have call successors, (33) [2021-12-06 21:14:39,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 21:14:42,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 21:14:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:14:46,337 INFO L93 Difference]: Finished difference Result 1129 states and 1833 transitions. [2021-12-06 21:14:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 21:14:46,338 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 5.043478260869565) internal successors, (116), 20 states have internal predecessors, (116), 7 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (33), 7 states have call predecessors, (33), 6 states have call successors, (33) Word has length 331 [2021-12-06 21:14:46,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:14:46,346 INFO L225 Difference]: With dead ends: 1129 [2021-12-06 21:14:46,346 INFO L226 Difference]: Without dead ends: 1127 [2021-12-06 21:14:46,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=130, Invalid=1272, Unknown=4, NotChecked=0, Total=1406 [2021-12-06 21:14:46,347 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 178 mSDsluCounter, 5539 mSDsCounter, 0 mSdLazyCounter, 3570 mSolverCounterSat, 216 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 6162 SdHoareTripleChecker+Invalid, 5402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 3570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1615 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:14:46,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 6162 Invalid, 5402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 3570 Invalid, 1 Unknown, 1615 Unchecked, 10.5s Time] [2021-12-06 21:14:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2021-12-06 21:14:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1025. [2021-12-06 21:14:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 706 states have (on average 1.1643059490084986) internal successors, (822), 709 states have internal predecessors, (822), 232 states have call successors, (232), 63 states have call predecessors, (232), 85 states have return successors, (575), 253 states have call predecessors, (575), 230 states have call successors, (575) [2021-12-06 21:14:46,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1629 transitions. [2021-12-06 21:14:46,401 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1629 transitions. Word has length 331 [2021-12-06 21:14:46,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:14:46,402 INFO L470 AbstractCegarLoop]: Abstraction has 1025 states and 1629 transitions. [2021-12-06 21:14:46,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 5.043478260869565) internal successors, (116), 20 states have internal predecessors, (116), 7 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (33), 7 states have call predecessors, (33), 6 states have call successors, (33) [2021-12-06 21:14:46,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1629 transitions. [2021-12-06 21:14:46,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-12-06 21:14:46,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:14:46,405 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:14:46,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-06 21:14:46,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-06 21:14:46,606 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:14:46,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:14:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash 817713740, now seen corresponding path program 3 times [2021-12-06 21:14:46,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:14:46,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475342025] [2021-12-06 21:14:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:14:46,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:14:46,659 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:14:46,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567553104] [2021-12-06 21:14:46,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 21:14:46,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:14:46,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:14:46,660 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:14:46,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 21:14:48,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-06 21:14:48,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:14:48,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-06 21:14:48,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:14:50,418 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12086 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12086)))) is different from true [2021-12-06 21:14:51,807 INFO L354 Elim1Store]: treesize reduction 33, result has 38.9 percent of original size [2021-12-06 21:14:51,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 37 [2021-12-06 21:15:02,280 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12088 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_12088)) |c_#memory_int|) (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|))) is different from true [2021-12-06 21:15:07,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:15:07,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:15:07,143 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-06 21:15:07,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 37 [2021-12-06 21:15:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 328 proven. 47 refuted. 7 times theorem prover too weak. 278 trivial. 9 not checked. [2021-12-06 21:15:09,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:15:10,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:15:10,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475342025] [2021-12-06 21:15:10,279 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:15:10,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567553104] [2021-12-06 21:15:10,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567553104] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:15:10,279 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:15:10,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-12-06 21:15:10,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66965518] [2021-12-06 21:15:10,280 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:15:10,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 21:15:10,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:15:10,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 21:15:10,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=618, Unknown=7, NotChecked=102, Total=812 [2021-12-06 21:15:10,281 INFO L87 Difference]: Start difference. First operand 1025 states and 1629 transitions. Second operand has 24 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 23 states have internal predecessors, (160), 14 states have call successors, (41), 5 states have call predecessors, (41), 10 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2021-12-06 21:15:15,860 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_12086 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12086)))) (exists ((v_ArrVal_12088 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_12088)) |c_#memory_int|) (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|)))) is different from true [2021-12-06 21:16:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:16:04,822 INFO L93 Difference]: Finished difference Result 2145 states and 3728 transitions. [2021-12-06 21:16:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 21:16:04,824 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 23 states have internal predecessors, (160), 14 states have call successors, (41), 5 states have call predecessors, (41), 10 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) Word has length 337 [2021-12-06 21:16:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:16:04,834 INFO L225 Difference]: With dead ends: 2145 [2021-12-06 21:16:04,834 INFO L226 Difference]: Without dead ends: 1439 [2021-12-06 21:16:04,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 325 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 59.0s TimeCoverageRelationStatistics Valid=224, Invalid=1650, Unknown=30, NotChecked=258, Total=2162 [2021-12-06 21:16:04,838 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 346 mSDsluCounter, 6742 mSDsCounter, 0 mSdLazyCounter, 6759 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 7445 SdHoareTripleChecker+Invalid, 10649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 6759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3593 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:16:04,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 7445 Invalid, 10649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 6759 Invalid, 0 Unknown, 3593 Unchecked, 16.0s Time] [2021-12-06 21:16:04,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2021-12-06 21:16:04,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1107. [2021-12-06 21:16:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 770 states have (on average 1.161038961038961) internal successors, (894), 772 states have internal predecessors, (894), 245 states have call successors, (245), 67 states have call predecessors, (245), 90 states have return successors, (632), 268 states have call predecessors, (632), 243 states have call successors, (632) [2021-12-06 21:16:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1771 transitions. [2021-12-06 21:16:04,914 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1771 transitions. Word has length 337 [2021-12-06 21:16:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:16:04,914 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 1771 transitions. [2021-12-06 21:16:04,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 23 states have internal predecessors, (160), 14 states have call successors, (41), 5 states have call predecessors, (41), 10 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2021-12-06 21:16:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1771 transitions. [2021-12-06 21:16:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-12-06 21:16:04,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:16:04,918 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:04,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-12-06 21:16:05,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:16:05,120 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:16:05,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:16:05,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1052533356, now seen corresponding path program 1 times [2021-12-06 21:16:05,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:16:05,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117569533] [2021-12-06 21:16:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:16:05,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:16:05,208 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:16:05,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092139119] [2021-12-06 21:16:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:16:05,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:16:05,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:16:05,209 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:16:05,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 21:16:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:16:06,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 3742 conjuncts, 262 conjunts are in the unsatisfiable core [2021-12-06 21:16:06,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:16:06,119 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 21:16:06,317 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 13 treesize of output 9 [2021-12-06 21:16:06,374 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 21:16:06,528 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 21:16:06,529 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 21:16:06,613 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 21:16:06,614 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 21:16:06,695 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 21:16:06,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:16:06,700 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 21:16:06,942 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_12503 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_12503))) (exists ((v_ArrVal_12502 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_12502)))) is different from true [2021-12-06 21:16:07,321 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12504 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12506 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12506)) (= |c_#memory_$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_12504))))) is different from true [2021-12-06 21:16:07,347 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12504 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12506 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12506)) (= |c_#memory_$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_12504))))) is different from true [2021-12-06 21:16:07,915 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 21:16:07,916 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 21:16:07,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:16:07,968 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-12-06 21:16:07,968 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 46 treesize of output 84 [2021-12-06 21:16:07,980 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 21:16:07,980 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 21:16:08,211 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 21:16:08,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:16:08,243 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 8 treesize of output 1 [2021-12-06 21:16:08,266 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 18 treesize of output 12 [2021-12-06 21:16:08,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:16:08,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-06 21:16:08,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:16:08,408 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 16 treesize of output 20 [2021-12-06 21:16:18,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:16:18,744 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 83 treesize of output 71 [2021-12-06 21:16:18,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 106 [2021-12-06 21:16:18,790 INFO L354 Elim1Store]: treesize reduction 74, result has 20.4 percent of original size [2021-12-06 21:16:18,790 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 91 treesize of output 107 [2021-12-06 21:16:18,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:16:18,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:16:18,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:16:18,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 103 [2021-12-06 21:16:18,829 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 21:16:18,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:16:18,856 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 31 treesize of output 19 [2021-12-06 21:16:18,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 36 [2021-12-06 21:16:18,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 44 [2021-12-06 21:16:18,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 86 [2021-12-06 21:16:18,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2021-12-06 21:16:19,035 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 21:16:19,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 96 [2021-12-06 21:16:19,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-12-06 21:16:23,723 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_12537 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_12537))) (exists ((v_ArrVal_12538 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12538)) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 21:16:29,231 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12541 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12541)))) is different from true [2021-12-06 21:16:46,301 INFO L354 Elim1Store]: treesize reduction 61, result has 39.6 percent of original size [2021-12-06 21:16:46,301 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 2 case distinctions, treesize of input 78 treesize of output 91 [2021-12-06 21:16:46,308 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 106 treesize of output 100 [2021-12-06 21:16:46,312 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 21:16:46,319 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 53 treesize of output 49 [2021-12-06 21:16:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 386 proven. 97 refuted. 13 times theorem prover too weak. 124 trivial. 43 not checked. [2021-12-06 21:16:49,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:16:50,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:16:50,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117569533] [2021-12-06 21:16:50,366 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:16:50,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092139119] [2021-12-06 21:16:50,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092139119] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:16:50,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:16:50,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2021-12-06 21:16:50,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700568803] [2021-12-06 21:16:50,367 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:16:50,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-12-06 21:16:50,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:16:50,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-12-06 21:16:50,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2489, Unknown=90, NotChecked=530, Total=3306 [2021-12-06 21:16:50,369 INFO L87 Difference]: Start difference. First operand 1107 states and 1771 transitions. Second operand has 57 states, 51 states have (on average 3.6666666666666665) internal successors, (187), 52 states have internal predecessors, (187), 23 states have call successors, (44), 11 states have call predecessors, (44), 20 states have return successors, (43), 22 states have call predecessors, (43), 23 states have call successors, (43) [2021-12-06 21:16:54,855 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_12502 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_12502) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_12503 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_12503))))) (exists ((v_ArrVal_12504 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12506 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12506)) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_12504)))))) is different from true [2021-12-06 21:17:03,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:17:06,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:17:07,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:17:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:17:14,815 INFO L93 Difference]: Finished difference Result 2339 states and 3896 transitions. [2021-12-06 21:17:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-06 21:17:14,816 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 51 states have (on average 3.6666666666666665) internal successors, (187), 52 states have internal predecessors, (187), 23 states have call successors, (44), 11 states have call predecessors, (44), 20 states have return successors, (43), 22 states have call predecessors, (43), 23 states have call successors, (43) Word has length 342 [2021-12-06 21:17:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:17:14,825 INFO L225 Difference]: With dead ends: 2339 [2021-12-06 21:17:14,825 INFO L226 Difference]: Without dead ends: 1576 [2021-12-06 21:17:14,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 359 SyntacticMatches, 15 SemanticMatches, 71 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1633 ImplicationChecksByTransitivity, 50.1s TimeCoverageRelationStatistics Valid=292, Invalid=4036, Unknown=118, NotChecked=810, Total=5256 [2021-12-06 21:17:14,830 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 386 mSDsluCounter, 9425 mSDsCounter, 0 mSdLazyCounter, 5509 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 10172 SdHoareTripleChecker+Invalid, 20855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 5509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15017 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:17:14,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 10172 Invalid, 20855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 5509 Invalid, 0 Unknown, 15017 Unchecked, 11.2s Time] [2021-12-06 21:17:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-12-06 21:17:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1335. [2021-12-06 21:17:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 934 states have (on average 1.1488222698072805) internal successors, (1073), 939 states have internal predecessors, (1073), 280 states have call successors, (280), 91 states have call predecessors, (280), 119 states have return successors, (764), 305 states have call predecessors, (764), 278 states have call successors, (764) [2021-12-06 21:17:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 2117 transitions. [2021-12-06 21:17:14,918 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 2117 transitions. Word has length 342 [2021-12-06 21:17:14,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:17:14,918 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 2117 transitions. [2021-12-06 21:17:14,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 51 states have (on average 3.6666666666666665) internal successors, (187), 52 states have internal predecessors, (187), 23 states have call successors, (44), 11 states have call predecessors, (44), 20 states have return successors, (43), 22 states have call predecessors, (43), 23 states have call successors, (43) [2021-12-06 21:17:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 2117 transitions. [2021-12-06 21:17:14,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2021-12-06 21:17:14,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:17:14,924 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:17:14,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-12-06 21:17:15,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:17:15,125 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:17:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:17:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1218341508, now seen corresponding path program 1 times [2021-12-06 21:17:15,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:17:15,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304174603] [2021-12-06 21:17:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:17:15,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:17:15,188 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:17:15,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283159394] [2021-12-06 21:17:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:17:15,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:17:15,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:17:15,189 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:17:15,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-06 21:17:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:17:15,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 3761 conjuncts, 242 conjunts are in the unsatisfiable core [2021-12-06 21:17:15,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:17:18,465 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12962 Int) (v_ArrVal_12960 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12962))) (= |c_#memory_$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_12960))))) is different from true [2021-12-06 21:17:20,496 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12962 Int) (v_ArrVal_12960 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_12962))) (= |c_#memory_$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_12960))))) is different from true [2021-12-06 21:17:20,595 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 21:17:20,595 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 33 treesize of output 42 [2021-12-06 21:17:20,616 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 21:17:20,616 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 27 treesize of output 36 [2021-12-06 21:17:21,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:17:21,437 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 102 treesize of output 90 [2021-12-06 21:17:21,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:17:21,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 153 [2021-12-06 21:17:21,464 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 21:17:21,464 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 28 treesize of output 34 [2021-12-06 21:17:21,481 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 21:17:21,481 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 26 treesize of output 32 [2021-12-06 21:17:21,492 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 8 treesize of output 4 [2021-12-06 21:17:21,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 50 [2021-12-06 21:17:21,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 66 [2021-12-06 21:17:51,721 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_12992 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12992))) (exists ((v_ArrVal_12991 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12991))) (exists ((v_ArrVal_12993 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12993) |c_#memory_$Pointer$.base|)))) is different from true [2021-12-06 21:18:00,182 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616) 0)) (exists ((v_ArrVal_12991 (Array Int Int)) (v_ArrVal_12992 (Array Int Int)) (v_ArrVal_12993 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12991)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12993) |c_#memory_$Pointer$.base|) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12992))))) is different from true [2021-12-06 21:18:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 439 proven. 50 refuted. 2 times theorem prover too weak. 137 trivial. 50 not checked. [2021-12-06 21:18:20,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:18:21,503 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13016 (Array Int Int)) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_377| Int) (v_ArrVal_13017 Int) (v_ArrVal_13018 Int)) (let ((.cse0 (+ 32 c_aws_array_list_length_~list.offset))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_377| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_377|) 0 v_ArrVal_13018)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_377| v_ArrVal_13016) c_aws_array_list_length_~list.base) (+ 8 c_aws_array_list_length_~list.offset)) 18446744073709551616) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_377| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_377|) 0 v_ArrVal_13017)) c_aws_array_list_length_~list.base) .cse0) 0))))) is different from false [2021-12-06 21:18:21,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:18:21,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304174603] [2021-12-06 21:18:21,509 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:18:21,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283159394] [2021-12-06 21:18:21,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283159394] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:18:21,509 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:18:21,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-12-06 21:18:21,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062695621] [2021-12-06 21:18:21,509 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:18:21,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 21:18:21,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:18:21,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 21:18:21,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=804, Unknown=47, NotChecked=310, Total=1260 [2021-12-06 21:18:21,511 INFO L87 Difference]: Start difference. First operand 1335 states and 2117 transitions. Second operand has 35 states, 33 states have (on average 5.696969696969697) internal successors, (188), 32 states have internal predecessors, (188), 17 states have call successors, (46), 6 states have call predecessors, (46), 12 states have return successors, (44), 16 states have call predecessors, (44), 17 states have call successors, (44) [2021-12-06 21:18:22,537 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_12992 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12992))) (exists ((v_ArrVal_12991 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12991))) (exists ((v_ArrVal_12993 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12993) |c_#memory_$Pointer$.base|)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12962 Int) (v_ArrVal_12960 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12962))) (= |c_#memory_$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_12960)))))) is different from true [2021-12-06 21:18:36,922 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616) 0)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12962 Int) (v_ArrVal_12960 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_12962))) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_12960))))) (exists ((v_ArrVal_12991 (Array Int Int)) (v_ArrVal_12992 (Array Int Int)) (v_ArrVal_12993 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12991)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12993) |c_#memory_$Pointer$.base|) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_12992))))) is different from true [2021-12-06 21:18:48,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:18:51,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:18:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:18:59,380 INFO L93 Difference]: Finished difference Result 2656 states and 4466 transitions. [2021-12-06 21:18:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 21:18:59,381 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 5.696969696969697) internal successors, (188), 32 states have internal predecessors, (188), 17 states have call successors, (46), 6 states have call predecessors, (46), 12 states have return successors, (44), 16 states have call predecessors, (44), 17 states have call successors, (44) Word has length 355 [2021-12-06 21:18:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:18:59,391 INFO L225 Difference]: With dead ends: 2656 [2021-12-06 21:18:59,391 INFO L226 Difference]: Without dead ends: 1684 [2021-12-06 21:18:59,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 353 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 83.0s TimeCoverageRelationStatistics Valid=196, Invalid=1917, Unknown=77, NotChecked=672, Total=2862 [2021-12-06 21:18:59,396 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 448 mSDsluCounter, 6837 mSDsCounter, 0 mSdLazyCounter, 5128 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 7493 SdHoareTripleChecker+Invalid, 13543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 5128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7925 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:18:59,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 7493 Invalid, 13543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 5128 Invalid, 0 Unknown, 7925 Unchecked, 16.7s Time] [2021-12-06 21:18:59,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2021-12-06 21:18:59,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1341. [2021-12-06 21:18:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 940 states have (on average 1.147872340425532) internal successors, (1079), 944 states have internal predecessors, (1079), 280 states have call successors, (280), 91 states have call predecessors, (280), 119 states have return successors, (764), 306 states have call predecessors, (764), 278 states have call successors, (764) [2021-12-06 21:18:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2123 transitions. [2021-12-06 21:18:59,495 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2123 transitions. Word has length 355 [2021-12-06 21:18:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:18:59,495 INFO L470 AbstractCegarLoop]: Abstraction has 1341 states and 2123 transitions. [2021-12-06 21:18:59,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 5.696969696969697) internal successors, (188), 32 states have internal predecessors, (188), 17 states have call successors, (46), 6 states have call predecessors, (46), 12 states have return successors, (44), 16 states have call predecessors, (44), 17 states have call successors, (44) [2021-12-06 21:18:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2123 transitions. [2021-12-06 21:18:59,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-12-06 21:18:59,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:18:59,501 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:18:59,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-12-06 21:18:59,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:18:59,702 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:18:59,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:18:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1564023245, now seen corresponding path program 1 times [2021-12-06 21:18:59,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:18:59,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070930739] [2021-12-06 21:18:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:18:59,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:18:59,763 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:18:59,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408004339] [2021-12-06 21:18:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:18:59,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:18:59,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:18:59,764 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:18:59,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 21:19:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:19:00,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 3755 conjuncts, 150 conjunts are in the unsatisfiable core [2021-12-06 21:19:00,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:19:00,611 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 21:19:01,074 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 21:19:01,075 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 21:19:01,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:01,086 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 21:19:07,597 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 21:19:07,603 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 13 treesize of output 9 [2021-12-06 21:19:07,606 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 13 treesize of output 9 [2021-12-06 21:19:07,669 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 13 treesize of output 9 [2021-12-06 21:19:07,671 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 13 treesize of output 9 [2021-12-06 21:19:07,674 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 21:19:15,928 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 21:19:15,928 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 21:19:15,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:15,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:15,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:15,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-06 21:19:15,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:15,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:15,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:15,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-06 21:19:15,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:15,971 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 21:19:15,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:15,981 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 21:19:16,391 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_13442 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_13442))) (exists ((v_ArrVal_13441 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_13441) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 21:19:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 313 proven. 33 refuted. 3 times theorem prover too weak. 317 trivial. 0 not checked. [2021-12-06 21:19:23,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:19:25,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:19:25,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070930739] [2021-12-06 21:19:25,155 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:19:25,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408004339] [2021-12-06 21:19:25,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408004339] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:19:25,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:19:25,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-12-06 21:19:25,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277112584] [2021-12-06 21:19:25,155 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:19:25,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 21:19:25,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:19:25,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 21:19:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1324, Unknown=41, NotChecked=74, Total=1560 [2021-12-06 21:19:25,157 INFO L87 Difference]: Start difference. First operand 1341 states and 2123 transitions. Second operand has 33 states, 30 states have (on average 5.533333333333333) internal successors, (166), 29 states have internal predecessors, (166), 15 states have call successors, (42), 7 states have call predecessors, (42), 11 states have return successors, (40), 11 states have call predecessors, (40), 15 states have call successors, (40) [2021-12-06 21:19:30,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:19:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:19:34,440 INFO L93 Difference]: Finished difference Result 2596 states and 4335 transitions. [2021-12-06 21:19:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 21:19:34,440 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 5.533333333333333) internal successors, (166), 29 states have internal predecessors, (166), 15 states have call successors, (42), 7 states have call predecessors, (42), 11 states have return successors, (40), 11 states have call predecessors, (40), 15 states have call successors, (40) Word has length 347 [2021-12-06 21:19:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:19:34,449 INFO L225 Difference]: With dead ends: 2596 [2021-12-06 21:19:34,450 INFO L226 Difference]: Without dead ends: 1540 [2021-12-06 21:19:34,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 523 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=221, Invalid=2370, Unknown=65, NotChecked=100, Total=2756 [2021-12-06 21:19:34,455 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 283 mSDsluCounter, 5626 mSDsCounter, 0 mSdLazyCounter, 3637 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 6265 SdHoareTripleChecker+Invalid, 9635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 3637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5727 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:19:34,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 6265 Invalid, 9635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 3637 Invalid, 0 Unknown, 5727 Unchecked, 6.1s Time] [2021-12-06 21:19:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2021-12-06 21:19:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1310. [2021-12-06 21:19:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 920 states have (on average 1.1510869565217392) internal successors, (1059), 925 states have internal predecessors, (1059), 274 states have call successors, (274), 86 states have call predecessors, (274), 114 states have return successors, (757), 299 states have call predecessors, (757), 272 states have call successors, (757) [2021-12-06 21:19:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2090 transitions. [2021-12-06 21:19:34,545 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2090 transitions. Word has length 347 [2021-12-06 21:19:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:19:34,545 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 2090 transitions. [2021-12-06 21:19:34,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 5.533333333333333) internal successors, (166), 29 states have internal predecessors, (166), 15 states have call successors, (42), 7 states have call predecessors, (42), 11 states have return successors, (40), 11 states have call predecessors, (40), 15 states have call successors, (40) [2021-12-06 21:19:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2090 transitions. [2021-12-06 21:19:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-12-06 21:19:34,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:19:34,550 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:19:34,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-12-06 21:19:34,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:19:34,752 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:19:34,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:19:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1514544550, now seen corresponding path program 2 times [2021-12-06 21:19:34,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:19:34,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511296359] [2021-12-06 21:19:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:19:34,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:19:34,838 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:19:34,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695940540] [2021-12-06 21:19:34,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:19:34,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:19:34,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:19:34,839 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:19:34,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-06 21:19:35,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 21:19:35,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:19:35,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 3742 conjuncts, 239 conjunts are in the unsatisfiable core [2021-12-06 21:19:35,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:19:35,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:35,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:35,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:19:35,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 95 [2021-12-06 21:19:35,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:19:35,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:19:35,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 158 [2021-12-06 21:19:36,006 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 21:19:36,007 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 28 treesize of output 34 [2021-12-06 21:19:36,025 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 21:19:36,025 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 26 treesize of output 32 [2021-12-06 21:19:36,032 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 21:19:36,046 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 8 treesize of output 4 [2021-12-06 21:19:36,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 43 [2021-12-06 21:19:36,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 67 [2021-12-06 21:19:38,136 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_13900 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13900)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_13898 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13898)))) (exists ((v_ArrVal_13902 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_13902)))) is different from true [2021-12-06 21:19:45,763 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_13905 Int) (v_ArrVal_13903 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_13907 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13907))) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13903))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13905)) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 21:20:31,151 INFO L354 Elim1Store]: treesize reduction 78, result has 39.5 percent of original size [2021-12-06 21:20:31,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 112 [2021-12-06 21:20:31,208 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-06 21:20:31,208 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-12-06 21:20:31,266 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-06 21:20:31,266 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-12-06 21:20:31,290 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 21:20:36,658 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 21:20:37,077 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 14 treesize of output 10 [2021-12-06 21:20:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:20:37,206 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:20:37,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-12-06 21:20:37,361 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 14 treesize of output 10 [2021-12-06 21:20:38,307 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:20:38,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-12-06 21:20:38,363 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 21:20:39,210 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-06 21:20:39,210 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 1 case distinctions, treesize of input 19 treesize of output 29 [2021-12-06 21:20:39,479 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 10 treesize of output 6 [2021-12-06 21:20:39,756 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-06 21:20:39,756 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 1 case distinctions, treesize of input 24 treesize of output 34 [2021-12-06 21:20:39,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:20:39,849 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 19 treesize of output 23 [2021-12-06 21:20:42,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:20:42,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:20:42,700 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 21:20:42,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 190 treesize of output 170 [2021-12-06 21:20:42,708 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 21:20:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 447 proven. 13 refuted. 0 times theorem prover too weak. 200 trivial. 3 not checked. [2021-12-06 21:20:42,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:20:47,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:20:47,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511296359] [2021-12-06 21:20:47,682 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:20:47,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695940540] [2021-12-06 21:20:47,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695940540] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:20:47,682 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:20:47,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-12-06 21:20:47,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615204786] [2021-12-06 21:20:47,682 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:20:47,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 21:20:47,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:20:47,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 21:20:47,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1656, Unknown=30, NotChecked=166, Total=1980 [2021-12-06 21:20:47,684 INFO L87 Difference]: Start difference. First operand 1310 states and 2090 transitions. Second operand has 41 states, 38 states have (on average 4.2894736842105265) internal successors, (163), 36 states have internal predecessors, (163), 12 states have call successors, (42), 6 states have call predecessors, (42), 9 states have return successors, (40), 11 states have call predecessors, (40), 12 states have call successors, (40) [2021-12-06 21:20:48,074 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_13900 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13900)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_13898 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13898)))) (exists ((v_ArrVal_13902 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_13902))) (exists ((v_ArrVal_13905 Int) (v_ArrVal_13903 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_13907 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13907))) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13903))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13905)) |c_#memory_$Pointer$.base|)))) is different from true [2021-12-06 21:20:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:20:57,907 INFO L93 Difference]: Finished difference Result 2310 states and 3850 transitions. [2021-12-06 21:20:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 21:20:57,908 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 4.2894736842105265) internal successors, (163), 36 states have internal predecessors, (163), 12 states have call successors, (42), 6 states have call predecessors, (42), 9 states have return successors, (40), 11 states have call predecessors, (40), 12 states have call successors, (40) Word has length 342 [2021-12-06 21:20:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:20:57,920 INFO L225 Difference]: With dead ends: 2310 [2021-12-06 21:20:57,920 INFO L226 Difference]: Without dead ends: 1471 [2021-12-06 21:20:57,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 380 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 55.8s TimeCoverageRelationStatistics Valid=157, Invalid=2080, Unknown=31, NotChecked=282, Total=2550 [2021-12-06 21:20:57,924 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 220 mSDsluCounter, 6069 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 6676 SdHoareTripleChecker+Invalid, 11825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9432 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:20:57,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 6676 Invalid, 11825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 2164 Invalid, 0 Unknown, 9432 Unchecked, 5.3s Time] [2021-12-06 21:20:57,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2021-12-06 21:20:58,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1357. [2021-12-06 21:20:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 955 states have (on average 1.149738219895288) internal successors, (1098), 962 states have internal predecessors, (1098), 281 states have call successors, (281), 90 states have call predecessors, (281), 119 states have return successors, (800), 305 states have call predecessors, (800), 279 states have call successors, (800) [2021-12-06 21:20:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 2179 transitions. [2021-12-06 21:20:58,010 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 2179 transitions. Word has length 342 [2021-12-06 21:20:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:20:58,010 INFO L470 AbstractCegarLoop]: Abstraction has 1357 states and 2179 transitions. [2021-12-06 21:20:58,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 4.2894736842105265) internal successors, (163), 36 states have internal predecessors, (163), 12 states have call successors, (42), 6 states have call predecessors, (42), 9 states have return successors, (40), 11 states have call predecessors, (40), 12 states have call successors, (40) [2021-12-06 21:20:58,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 2179 transitions. [2021-12-06 21:20:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-12-06 21:20:58,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:20:58,020 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:20:58,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-12-06 21:20:58,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-06 21:20:58,222 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:20:58,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:20:58,223 INFO L85 PathProgramCache]: Analyzing trace with hash 730786575, now seen corresponding path program 1 times [2021-12-06 21:20:58,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:20:58,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141972374] [2021-12-06 21:20:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:20:58,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:20:58,282 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:20:58,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872416942] [2021-12-06 21:20:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:20:58,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:20:58,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:20:58,283 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:20:58,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-06 21:20:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:20:59,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 3745 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 21:20:59,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:20:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2021-12-06 21:20:59,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:20:59,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:20:59,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141972374] [2021-12-06 21:20:59,372 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:20:59,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872416942] [2021-12-06 21:20:59,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872416942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:20:59,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:20:59,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:20:59,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690801343] [2021-12-06 21:20:59,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:20:59,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:20:59,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:20:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:20:59,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:20:59,373 INFO L87 Difference]: Start difference. First operand 1357 states and 2179 transitions. Second operand has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 8 states have internal predecessors, (128), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-06 21:21:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:21:00,087 INFO L93 Difference]: Finished difference Result 2368 states and 4127 transitions. [2021-12-06 21:21:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:21:00,088 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 8 states have internal predecessors, (128), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 342 [2021-12-06 21:21:00,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:21:00,098 INFO L225 Difference]: With dead ends: 2368 [2021-12-06 21:21:00,098 INFO L226 Difference]: Without dead ends: 1438 [2021-12-06 21:21:00,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 333 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 21:21:00,102 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 4 mSDsluCounter, 4894 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5519 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:21:00,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 5519 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:21:00,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2021-12-06 21:21:00,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1361. [2021-12-06 21:21:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 957 states have (on average 1.1494252873563218) internal successors, (1100), 966 states have internal predecessors, (1100), 281 states have call successors, (281), 90 states have call predecessors, (281), 121 states have return successors, (819), 305 states have call predecessors, (819), 279 states have call successors, (819) [2021-12-06 21:21:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 2200 transitions. [2021-12-06 21:21:00,210 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 2200 transitions. Word has length 342 [2021-12-06 21:21:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:21:00,210 INFO L470 AbstractCegarLoop]: Abstraction has 1361 states and 2200 transitions. [2021-12-06 21:21:00,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 8 states have internal predecessors, (128), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-06 21:21:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 2200 transitions. [2021-12-06 21:21:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-12-06 21:21:00,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:21:00,216 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:00,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-12-06 21:21:00,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-06 21:21:00,418 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:21:00,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:21:00,419 INFO L85 PathProgramCache]: Analyzing trace with hash -173228442, now seen corresponding path program 3 times [2021-12-06 21:21:00,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:21:00,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864825402] [2021-12-06 21:21:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:21:00,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:21:00,509 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:21:00,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388472337] [2021-12-06 21:21:00,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 21:21:00,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:21:00,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:21:00,510 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:21:00,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-06 21:21:02,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-06 21:21:02,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:21:02,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 21:21:02,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:21:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-12-06 21:21:02,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:21:02,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:21:02,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864825402] [2021-12-06 21:21:02,368 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:21:02,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388472337] [2021-12-06 21:21:02,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388472337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:21:02,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:21:02,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:21:02,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596623641] [2021-12-06 21:21:02,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:21:02,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:21:02,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:21:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:21:02,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:21:02,369 INFO L87 Difference]: Start difference. First operand 1361 states and 2200 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-06 21:21:02,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:21:02,478 INFO L93 Difference]: Finished difference Result 2617 states and 4547 transitions. [2021-12-06 21:21:02,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:21:02,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 342 [2021-12-06 21:21:02,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:21:02,484 INFO L225 Difference]: With dead ends: 2617 [2021-12-06 21:21:02,484 INFO L226 Difference]: Without dead ends: 1363 [2021-12-06 21:21:02,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 339 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 21:21:02,489 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 7 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:21:02,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1899 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:21:02,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-12-06 21:21:02,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1320. [2021-12-06 21:21:02,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 927 states have (on average 1.1499460625674218) internal successors, (1066), 934 states have internal predecessors, (1066), 274 states have call successors, (274), 87 states have call predecessors, (274), 117 states have return successors, (775), 299 states have call predecessors, (775), 272 states have call successors, (775) [2021-12-06 21:21:02,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2115 transitions. [2021-12-06 21:21:02,576 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2115 transitions. Word has length 342 [2021-12-06 21:21:02,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:21:02,576 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 2115 transitions. [2021-12-06 21:21:02,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-06 21:21:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2115 transitions. [2021-12-06 21:21:02,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-12-06 21:21:02,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:21:02,581 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:21:02,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-06 21:21:02,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-06 21:21:02,783 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:21:02,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:21:02,784 INFO L85 PathProgramCache]: Analyzing trace with hash -661106063, now seen corresponding path program 1 times [2021-12-06 21:21:02,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:21:02,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694631043] [2021-12-06 21:21:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:21:02,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:21:02,860 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:21:02,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363944096] [2021-12-06 21:21:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:21:02,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:21:02,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:21:02,861 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:21:02,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fceb10f-c92c-4f4c-8b74-955031772868/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-12-06 21:21:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:21:03,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 3744 conjuncts, 308 conjunts are in the unsatisfiable core [2021-12-06 21:21:03,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:21:03,844 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 21:21:03,988 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 21:21:04,026 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 21:21:04,026 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 21:21:04,480 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 21:21:04,480 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 21:21:04,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:04,490 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 21:21:06,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:06,628 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 21:21:06,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:06,638 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 21:21:08,949 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_15190 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_15190) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_15191 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_15191)))) is different from true [2021-12-06 21:21:12,391 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15195 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_15193 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_15195))) (= |c_#memory_$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_15193))))) is different from true [2021-12-06 21:21:26,588 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15195 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_15193 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_15193))) (= |c_#memory_$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_15195))))) is different from true [2021-12-06 21:21:30,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:30,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:30,752 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-12-06 21:21:30,752 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 70 treesize of output 106 [2021-12-06 21:21:30,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:30,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:30,808 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-12-06 21:21:30,809 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 65 treesize of output 101 [2021-12-06 21:21:30,829 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 21:21:30,829 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 21:21:30,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-12-06 21:21:31,010 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 14 treesize of output 10 [2021-12-06 21:21:31,107 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 21:21:31,344 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 21:21:31,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-12-06 21:21:31,602 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 22 treesize of output 18 [2021-12-06 21:21:31,681 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 18 treesize of output 14 [2021-12-06 21:21:31,715 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:21:31,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-12-06 21:21:31,852 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:21:31,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2021-12-06 21:21:31,963 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 18 treesize of output 14 [2021-12-06 21:21:32,059 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 21:21:32,131 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 21:21:32,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:32,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:32,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:32,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 42 [2021-12-06 21:21:32,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:32,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:32,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:32,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 33 [2021-12-06 21:21:32,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:32,554 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 16 treesize of output 20 [2021-12-06 21:21:32,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:32,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:32,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:21:32,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 35 treesize of output 44 [2021-12-06 21:21:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 366 proven. 51 refuted. 0 times theorem prover too weak. 236 trivial. 7 not checked. [2021-12-06 21:21:51,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:21:55,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:21:55,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694631043] [2021-12-06 21:21:55,020 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:21:55,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363944096] [2021-12-06 21:21:55,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363944096] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:21:55,020 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:21:55,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-12-06 21:21:55,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073251291] [2021-12-06 21:21:55,021 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:21:55,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-06 21:21:55,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:21:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-06 21:21:55,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1633, Unknown=51, NotChecked=252, Total=2070 [2021-12-06 21:21:55,022 INFO L87 Difference]: Start difference. First operand 1320 states and 2115 transitions. Second operand has 40 states, 36 states have (on average 4.611111111111111) internal successors, (166), 36 states have internal predecessors, (166), 16 states have call successors, (41), 8 states have call predecessors, (41), 13 states have return successors, (39), 15 states have call predecessors, (39), 16 states have call successors, (39)