./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/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_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/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_ea102094-bbde-4a91-b327-1231945098a3/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 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:26:40,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:26:40,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:26:40,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:26:40,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:26:40,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:26:40,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:26:40,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:26:40,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:26:40,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:26:40,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:26:40,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:26:40,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:26:40,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:26:40,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:26:40,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:26:40,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:26:40,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:26:40,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:26:40,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:26:40,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:26:40,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:26:40,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:26:40,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:26:40,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:26:40,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:26:40,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:26:40,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:26:40,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:26:40,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:26:40,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:26:40,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:26:40,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:26:40,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:26:40,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:26:40,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:26:40,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:26:40,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:26:40,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:26:40,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:26:40,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:26:40,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 18:26:40,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:26:40,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:26:40,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:26:40,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:26:40,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:26:40,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:26:40,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:26:40,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:26:40,745 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:26:40,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:26:40,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:26:40,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:26:40,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:26:40,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:26:40,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:26:40,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:26:40,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:26:40,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:26:40,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:26:40,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:26:40,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:26:40,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:26:40,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:26:40,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:26:40,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:26:40,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:26:40,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:26:40,749 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:26:40,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:26:40,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:26:40,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:26:40,749 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_ea102094-bbde-4a91-b327-1231945098a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2021-12-06 18:26:40,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:26:40,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:26:40,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:26:40,942 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:26:40,942 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:26:40,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-12-06 18:26:40,991 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/data/ddad666d8/ceecf2c7f44546c585d4a4cf66e70377/FLAGdf2b8eb53 [2021-12-06 18:26:41,582 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:26:41,583 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-12-06 18:26:41,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/data/ddad666d8/ceecf2c7f44546c585d4a4cf66e70377/FLAGdf2b8eb53 [2021-12-06 18:26:41,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/data/ddad666d8/ceecf2c7f44546c585d4a4cf66e70377 [2021-12-06 18:26:41,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:26:42,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:26:42,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:26:42,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:26:42,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:26:42,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:26:41" (1/1) ... [2021-12-06 18:26:42,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a34278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:42, skipping insertion in model container [2021-12-06 18:26:42,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:26:41" (1/1) ... [2021-12-06 18:26:42,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:26:42,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:26:42,297 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_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-12-06 18:26:42,302 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_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-12-06 18:26:42,841 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 18:26:42,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,894 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,894 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,895 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,895 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,905 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,907 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,907 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,909 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,909 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,910 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:42,910 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,171 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 18:26:43,172 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 18:26:43,173 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 18:26:43,174 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 18:26:43,175 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 18:26:43,175 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 18:26:43,176 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 18:26:43,176 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 18:26:43,176 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 18:26:43,177 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 18:26:43,281 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,286 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:26:43,348 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:26:43,359 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_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-12-06 18:26:43,359 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_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-12-06 18:26:43,383 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 18:26:43,395 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,396 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,396 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,396 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,397 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,403 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,412 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,413 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 18:26:43,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 18:26:43,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 18:26:43,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 18:26:43,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 18:26:43,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 18:26:43,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 18:26:43,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 18:26:43,444 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 18:26:43,444 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 18:26:43,457 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:26:43,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:26:43,618 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:26:43,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43 WrapperNode [2021-12-06 18:26:43,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:26:43,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:26:43,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:26:43,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:26:43,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43" (1/1) ... [2021-12-06 18:26:43,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43" (1/1) ... [2021-12-06 18:26:43,735 INFO L137 Inliner]: procedures = 690, calls = 1553, calls flagged for inlining = 48, calls inlined = 7, statements flattened = 577 [2021-12-06 18:26:43,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:26:43,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:26:43,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:26:43,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:26:43,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43" (1/1) ... [2021-12-06 18:26:43,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43" (1/1) ... [2021-12-06 18:26:43,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43" (1/1) ... [2021-12-06 18:26:43,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43" (1/1) ... [2021-12-06 18:26:43,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43" (1/1) ... [2021-12-06 18:26:43,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43" (1/1) ... [2021-12-06 18:26:43,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43" (1/1) ... [2021-12-06 18:26:43,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:26:43,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:26:43,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:26:43,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:26:43,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43" (1/1) ... [2021-12-06 18:26:43,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:26:43,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:43,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:26:43,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:26:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-06 18:26:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-06 18:26:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:26:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-06 18:26:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-06 18:26:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-06 18:26:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-06 18:26:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-06 18:26:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-06 18:26:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:26:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-06 18:26:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-06 18:26:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 18:26:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 18:26:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:26:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:26:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:26:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:26:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:26:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-06 18:26:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-06 18:26:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-06 18:26:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-06 18:26:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-06 18:26:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-06 18:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 18:26:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 18:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 18:26:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 18:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 18:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-06 18:26:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-06 18:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-06 18:26:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-06 18:26:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:26:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:26:44,040 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:26:44,042 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:26:44,709 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:26:44,716 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:26:44,717 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 18:26:44,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:26:44 BoogieIcfgContainer [2021-12-06 18:26:44,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:26:44,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:26:44,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:26:44,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:26:44,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:26:41" (1/3) ... [2021-12-06 18:26:44,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6469fb2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:26:44, skipping insertion in model container [2021-12-06 18:26:44,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:43" (2/3) ... [2021-12-06 18:26:44,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6469fb2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:26:44, skipping insertion in model container [2021-12-06 18:26:44,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:26:44" (3/3) ... [2021-12-06 18:26:44,727 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_clean_up_harness.i [2021-12-06 18:26:44,732 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:26:44,732 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:26:44,779 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:26:44,786 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 18:26:44,786 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:26:44,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 18:26:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 18:26:44,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:44,815 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-06 18:26:44,816 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:44,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1460968734, now seen corresponding path program 1 times [2021-12-06 18:26:44,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:44,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870474158] [2021-12-06 18:26:44,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:44,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:26:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:26:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:26:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:26:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:26:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 18:26:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 18:26:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 18:26:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 18:26:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 18:26:45,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:45,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870474158] [2021-12-06 18:26:45,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870474158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:45,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:45,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:26:45,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627617682] [2021-12-06 18:26:45,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:45,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:26:45,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:26:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:26:45,397 INFO L87 Difference]: Start difference. First operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 18:26:45,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:45,603 INFO L93 Difference]: Finished difference Result 228 states and 297 transitions. [2021-12-06 18:26:45,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:26:45,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2021-12-06 18:26:45,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:45,612 INFO L225 Difference]: With dead ends: 228 [2021-12-06 18:26:45,613 INFO L226 Difference]: Without dead ends: 114 [2021-12-06 18:26:45,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:26:45,618 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 35 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:45,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 162 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:26:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-06 18:26:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 107. [2021-12-06 18:26:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 states have internal predecessors, (87), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-06 18:26:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2021-12-06 18:26:45,656 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 65 [2021-12-06 18:26:45,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:45,657 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2021-12-06 18:26:45,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 18:26:45,657 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2021-12-06 18:26:45,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 18:26:45,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:45,661 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:45,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:26:45,661 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:45,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:45,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1894775411, now seen corresponding path program 1 times [2021-12-06 18:26:45,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:45,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479738346] [2021-12-06 18:26:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:45,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:26:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:26:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:26:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:26:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:26:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 18:26:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 18:26:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 18:26:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 18:26:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 18:26:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 18:26:45,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:45,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479738346] [2021-12-06 18:26:45,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479738346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:45,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:45,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:26:45,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304084180] [2021-12-06 18:26:45,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:45,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:26:45,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:26:45,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:26:45,931 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 18:26:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:46,275 INFO L93 Difference]: Finished difference Result 199 states and 243 transitions. [2021-12-06 18:26:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:26:46,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2021-12-06 18:26:46,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:46,277 INFO L225 Difference]: With dead ends: 199 [2021-12-06 18:26:46,277 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 18:26:46,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:26:46,279 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 88 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:46,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 366 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:26:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 18:26:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2021-12-06 18:26:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 74 states have internal predecessors, (88), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-06 18:26:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-12-06 18:26:46,292 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 71 [2021-12-06 18:26:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:46,292 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-12-06 18:26:46,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 18:26:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2021-12-06 18:26:46,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 18:26:46,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:46,296 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-06 18:26:46,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:26:46,296 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:46,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1692678563, now seen corresponding path program 1 times [2021-12-06 18:26:46,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:46,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215947882] [2021-12-06 18:26:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:46,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:46,345 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:26:46,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324347840] [2021-12-06 18:26:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:46,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:46,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:46,347 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:46,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:26:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:46,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 2123 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 18:26:46,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 18:26:46,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:26:46,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:46,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215947882] [2021-12-06 18:26:46,744 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:26:46,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324347840] [2021-12-06 18:26:46,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324347840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:46,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:46,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:26:46,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975990889] [2021-12-06 18:26:46,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:46,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:26:46,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:26:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:26:46,746 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-06 18:26:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:46,784 INFO L93 Difference]: Finished difference Result 190 states and 229 transitions. [2021-12-06 18:26:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:26:46,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 86 [2021-12-06 18:26:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:46,786 INFO L225 Difference]: With dead ends: 190 [2021-12-06 18:26:46,786 INFO L226 Difference]: Without dead ends: 117 [2021-12-06 18:26:46,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:26:46,788 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 4 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:46,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 890 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:26:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-06 18:26:46,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2021-12-06 18:26:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-06 18:26:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2021-12-06 18:26:46,798 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 86 [2021-12-06 18:26:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:46,799 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2021-12-06 18:26:46,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-06 18:26:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2021-12-06 18:26:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 18:26:46,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:46,801 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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 18:26:46,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:26:47,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:47,003 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash -124616364, now seen corresponding path program 1 times [2021-12-06 18:26:47,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:47,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209272146] [2021-12-06 18:26:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:47,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:47,154 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:26:47,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262609419] [2021-12-06 18:26:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:47,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:47,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:47,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:47,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:26:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:47,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2126 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 18:26:47,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 18:26:47,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:26:47,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:47,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209272146] [2021-12-06 18:26:47,508 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:26:47,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262609419] [2021-12-06 18:26:47,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262609419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:47,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:47,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:26:47,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174710030] [2021-12-06 18:26:47,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:47,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:26:47,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:26:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:26:47,510 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:26:47,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:47,529 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2021-12-06 18:26:47,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:26:47,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2021-12-06 18:26:47,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:47,531 INFO L225 Difference]: With dead ends: 134 [2021-12-06 18:26:47,531 INFO L226 Difference]: Without dead ends: 114 [2021-12-06 18:26:47,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 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 18:26:47,533 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 2 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:47,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 382 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:26:47,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-06 18:26:47,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-12-06 18:26:47,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 78 states have internal predecessors, (92), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-06 18:26:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2021-12-06 18:26:47,543 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 86 [2021-12-06 18:26:47,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:47,543 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2021-12-06 18:26:47,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:26:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2021-12-06 18:26:47,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 18:26:47,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:47,545 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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 18:26:47,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:26:47,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:47,747 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:47,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:47,749 INFO L85 PathProgramCache]: Analyzing trace with hash -117447722, now seen corresponding path program 1 times [2021-12-06 18:26:47,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:47,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853472499] [2021-12-06 18:26:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:47,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:47,884 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:26:47,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208771557] [2021-12-06 18:26:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:47,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:47,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:47,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:47,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:26:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:48,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 18:26:48,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 18:26:48,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:26:48,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:48,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853472499] [2021-12-06 18:26:48,210 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:26:48,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208771557] [2021-12-06 18:26:48,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208771557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:48,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:48,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:26:48,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140846816] [2021-12-06 18:26:48,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:48,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:26:48,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:48,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:26:48,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:26:48,213 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:26:48,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:48,244 INFO L93 Difference]: Finished difference Result 166 states and 198 transitions. [2021-12-06 18:26:48,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:26:48,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2021-12-06 18:26:48,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:48,246 INFO L225 Difference]: With dead ends: 166 [2021-12-06 18:26:48,246 INFO L226 Difference]: Without dead ends: 119 [2021-12-06 18:26:48,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 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 18:26:48,248 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 7 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:48,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 370 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:26:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-06 18:26:48,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2021-12-06 18:26:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 79 states have internal predecessors, (93), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-06 18:26:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 138 transitions. [2021-12-06 18:26:48,262 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 138 transitions. Word has length 87 [2021-12-06 18:26:48,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:48,262 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 138 transitions. [2021-12-06 18:26:48,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:26:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 138 transitions. [2021-12-06 18:26:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 18:26:48,265 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:48,265 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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 18:26:48,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:26:48,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:48,466 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:48,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash 995990719, now seen corresponding path program 1 times [2021-12-06 18:26:48,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:48,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879847420] [2021-12-06 18:26:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:48,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:48,520 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:26:48,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861305464] [2021-12-06 18:26:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:48,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:48,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:48,521 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:48,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:26:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:48,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:26:48,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 18:26:48,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:26:48,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:48,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879847420] [2021-12-06 18:26:48,888 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:26:48,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861305464] [2021-12-06 18:26:48,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861305464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:48,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:48,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:26:48,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850199922] [2021-12-06 18:26:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:48,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:26:48,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:48,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:26:48,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:26:48,890 INFO L87 Difference]: Start difference. First operand 115 states and 138 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:26:48,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:48,910 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2021-12-06 18:26:48,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:26:48,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2021-12-06 18:26:48,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:48,912 INFO L225 Difference]: With dead ends: 160 [2021-12-06 18:26:48,912 INFO L226 Difference]: Without dead ends: 117 [2021-12-06 18:26:48,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 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 18:26:48,913 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 4 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:48,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 510 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:26:48,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-06 18:26:48,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2021-12-06 18:26:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 79 states have internal predecessors, (92), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-06 18:26:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2021-12-06 18:26:48,922 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 87 [2021-12-06 18:26:48,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:48,922 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2021-12-06 18:26:48,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:26:48,923 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2021-12-06 18:26:48,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 18:26:48,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:48,924 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:48,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:26:49,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 18:26:49,126 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:49,127 INFO L85 PathProgramCache]: Analyzing trace with hash -462422751, now seen corresponding path program 1 times [2021-12-06 18:26:49,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:49,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745142077] [2021-12-06 18:26:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:49,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:49,261 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:26:49,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352854950] [2021-12-06 18:26:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:49,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:49,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:49,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:49,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:26:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:49,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 18:26:49,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 18:26:49,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:26:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 18:26:49,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:49,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745142077] [2021-12-06 18:26:49,913 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:26:49,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352854950] [2021-12-06 18:26:49,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352854950] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:26:49,913 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:26:49,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 18:26:49,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136813793] [2021-12-06 18:26:49,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:26:49,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:26:49,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:49,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:26:49,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:26:49,915 INFO L87 Difference]: Start difference. First operand 115 states and 137 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 18:26:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:49,990 INFO L93 Difference]: Finished difference Result 181 states and 218 transitions. [2021-12-06 18:26:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:26:49,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 90 [2021-12-06 18:26:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:49,992 INFO L225 Difference]: With dead ends: 181 [2021-12-06 18:26:49,993 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 18:26:49,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:26:49,994 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 33 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:49,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 505 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:26:49,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 18:26:50,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2021-12-06 18:26:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 88 states have internal predecessors, (104), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-06 18:26:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2021-12-06 18:26:50,008 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 90 [2021-12-06 18:26:50,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:50,008 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2021-12-06 18:26:50,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 18:26:50,009 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2021-12-06 18:26:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 18:26:50,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:50,010 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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 18:26:50,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 18:26:50,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 18:26:50,212 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:50,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:50,213 INFO L85 PathProgramCache]: Analyzing trace with hash 134736496, now seen corresponding path program 1 times [2021-12-06 18:26:50,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:50,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451937435] [2021-12-06 18:26:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:50,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:50,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:26:50,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436376895] [2021-12-06 18:26:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:50,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:50,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:50,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:50,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:26:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:50,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:26:50,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 18:26:50,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:26:50,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:50,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451937435] [2021-12-06 18:26:50,647 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:26:50,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436376895] [2021-12-06 18:26:50,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436376895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:50,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:50,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:26:50,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158434736] [2021-12-06 18:26:50,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:50,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:26:50,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:50,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:26:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:26:50,648 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 18:26:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:50,755 INFO L93 Difference]: Finished difference Result 177 states and 211 transitions. [2021-12-06 18:26:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:26:50,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 93 [2021-12-06 18:26:50,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:50,757 INFO L225 Difference]: With dead ends: 177 [2021-12-06 18:26:50,757 INFO L226 Difference]: Without dead ends: 122 [2021-12-06 18:26:50,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 89 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 18:26:50,758 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 157 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:50,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 451 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:26:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-06 18:26:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-12-06 18:26:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 86 states have (on average 1.186046511627907) internal successors, (102), 86 states have internal predecessors, (102), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-06 18:26:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 146 transitions. [2021-12-06 18:26:50,766 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 146 transitions. Word has length 93 [2021-12-06 18:26:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:50,766 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 146 transitions. [2021-12-06 18:26:50,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 18:26:50,766 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 146 transitions. [2021-12-06 18:26:50,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 18:26:50,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:50,767 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:50,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-06 18:26:50,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:50,969 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:50,971 INFO L85 PathProgramCache]: Analyzing trace with hash 966825052, now seen corresponding path program 1 times [2021-12-06 18:26:50,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:50,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350195951] [2021-12-06 18:26:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:50,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:51,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:26:51,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466435395] [2021-12-06 18:26:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:51,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:51,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:51,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:51,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:26:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:51,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-06 18:26:51,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:51,541 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 11 treesize of output 7 [2021-12-06 18:26:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 18:26:51,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:26:51,921 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 27 treesize of output 23 [2021-12-06 18:26:51,976 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 14 treesize of output 12 [2021-12-06 18:26:51,978 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 26 treesize of output 24 [2021-12-06 18:26:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 18:26:52,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:52,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350195951] [2021-12-06 18:26:52,159 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:26:52,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466435395] [2021-12-06 18:26:52,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466435395] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:26:52,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:26:52,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2021-12-06 18:26:52,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796697766] [2021-12-06 18:26:52,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:26:52,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 18:26:52,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 18:26:52,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:26:52,161 INFO L87 Difference]: Start difference. First operand 122 states and 146 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 18:26:52,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:52,610 INFO L93 Difference]: Finished difference Result 136 states and 161 transitions. [2021-12-06 18:26:52,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 18:26:52,611 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 108 [2021-12-06 18:26:52,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:52,612 INFO L225 Difference]: With dead ends: 136 [2021-12-06 18:26:52,612 INFO L226 Difference]: Without dead ends: 129 [2021-12-06 18:26:52,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2021-12-06 18:26:52,613 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 55 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:52,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 1527 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 386 Invalid, 0 Unknown, 64 Unchecked, 0.3s Time] [2021-12-06 18:26:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-06 18:26:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2021-12-06 18:26:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 90 states have internal predecessors, (106), 22 states have call successors, (22), 14 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-06 18:26:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 151 transitions. [2021-12-06 18:26:52,621 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 151 transitions. Word has length 108 [2021-12-06 18:26:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:52,621 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 151 transitions. [2021-12-06 18:26:52,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 18:26:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 151 transitions. [2021-12-06 18:26:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 18:26:52,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:52,623 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:52,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:26:52,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:52,824 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:52,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:52,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1799659061, now seen corresponding path program 1 times [2021-12-06 18:26:52,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:52,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767834082] [2021-12-06 18:26:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:52,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:52,861 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:26:52,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102880994] [2021-12-06 18:26:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:52,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:52,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:52,862 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:52,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:26:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:53,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 18:26:53,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 18:26:53,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:26:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-06 18:26:53,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:53,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767834082] [2021-12-06 18:26:53,373 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:26:53,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102880994] [2021-12-06 18:26:53,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102880994] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:26:53,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:26:53,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 18:26:53,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315214531] [2021-12-06 18:26:53,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:26:53,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:26:53,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:53,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:26:53,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:26:53,375 INFO L87 Difference]: Start difference. First operand 127 states and 151 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 18:26:53,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:53,447 INFO L93 Difference]: Finished difference Result 162 states and 191 transitions. [2021-12-06 18:26:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:26:53,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 111 [2021-12-06 18:26:53,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:53,449 INFO L225 Difference]: With dead ends: 162 [2021-12-06 18:26:53,449 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 18:26:53,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:26:53,450 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 7 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:53,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 507 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:26:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 18:26:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-06 18:26:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 93 states have internal predecessors, (109), 22 states have call successors, (22), 14 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-06 18:26:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2021-12-06 18:26:53,461 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 111 [2021-12-06 18:26:53,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:53,462 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2021-12-06 18:26:53,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 18:26:53,462 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2021-12-06 18:26:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 18:26:53,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:53,464 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:53,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 18:26:53,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 18:26:53,666 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:53,668 INFO L85 PathProgramCache]: Analyzing trace with hash -564772413, now seen corresponding path program 2 times [2021-12-06 18:26:53,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:53,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821422920] [2021-12-06 18:26:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:53,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:53,749 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:26:53,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287542810] [2021-12-06 18:26:53,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:26:53,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:53,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:53,750 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:53,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 18:26:54,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:26:54,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:26:54,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 2387 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-06 18:26:54,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:54,284 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 14 treesize of output 10 [2021-12-06 18:26:54,308 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-12-06 18:26:54,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 18:26:54,333 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-12-06 18:26:54,334 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 3 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 18:26:54,367 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-12-06 18:26:54,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-12-06 18:26:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 18:26:54,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:26:55,241 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 111 treesize of output 105 [2021-12-06 18:26:55,706 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 34 treesize of output 32 [2021-12-06 18:26:55,709 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 382 treesize of output 378 [2021-12-06 18:26:55,731 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 34 treesize of output 32 [2021-12-06 18:26:55,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:26:55,735 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 184 treesize of output 180 [2021-12-06 18:26:55,748 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 34 treesize of output 32 [2021-12-06 18:26:55,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:26:55,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:26:55,752 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 84 treesize of output 80 [2021-12-06 18:26:55,762 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 32 treesize of output 30 [2021-12-06 18:26:55,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:26:55,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:26:55,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:26:55,766 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 26 treesize of output 24 [2021-12-06 18:26:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 18:26:56,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:56,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821422920] [2021-12-06 18:26:56,091 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:26:56,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287542810] [2021-12-06 18:26:56,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287542810] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:26:56,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:26:56,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2021-12-06 18:26:56,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094581463] [2021-12-06 18:26:56,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:26:56,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 18:26:56,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:56,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 18:26:56,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2021-12-06 18:26:56,093 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand has 31 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 18:26:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:57,047 INFO L93 Difference]: Finished difference Result 144 states and 169 transitions. [2021-12-06 18:26:57,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 18:26:57,048 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 114 [2021-12-06 18:26:57,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:57,049 INFO L225 Difference]: With dead ends: 144 [2021-12-06 18:26:57,049 INFO L226 Difference]: Without dead ends: 137 [2021-12-06 18:26:57,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 18:26:57,050 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 65 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:57,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1671 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 502 Invalid, 0 Unknown, 113 Unchecked, 0.6s Time] [2021-12-06 18:26:57,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-06 18:26:57,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2021-12-06 18:26:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 96 states have internal predecessors, (112), 22 states have call successors, (22), 14 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-06 18:26:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2021-12-06 18:26:57,058 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 114 [2021-12-06 18:26:57,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:57,058 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2021-12-06 18:26:57,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 18:26:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2021-12-06 18:26:57,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 18:26:57,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:57,060 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:57,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 18:26:57,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:57,262 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:57,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:57,263 INFO L85 PathProgramCache]: Analyzing trace with hash -582835346, now seen corresponding path program 3 times [2021-12-06 18:26:57,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:57,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228923386] [2021-12-06 18:26:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:57,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:57,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:26:57,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703835136] [2021-12-06 18:26:57,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:26:57,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:57,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:57,342 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:57,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 18:26:59,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 18:26:59,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:26:59,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 133 conjunts are in the unsatisfiable core [2021-12-06 18:26:59,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:59,312 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 18:26:59,586 INFO L354 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2021-12-06 18:26:59,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2021-12-06 18:26:59,855 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_833 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_833))) is different from true [2021-12-06 18:26:59,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:59,937 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 17 treesize of output 19 [2021-12-06 18:26:59,946 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:26:59,946 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 18:27:18,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:27:18,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:27:18,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:27:18,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:27:18,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:27:18,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:27:18,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 41 [2021-12-06 18:27:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 12 trivial. 3 not checked. [2021-12-06 18:27:19,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:28:17,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:28:17,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228923386] [2021-12-06 18:28:17,397 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:28:17,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703835136] [2021-12-06 18:28:17,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703835136] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:28:17,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:28:17,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-12-06 18:28:17,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551041168] [2021-12-06 18:28:17,398 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 18:28:17,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 18:28:17,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:28:17,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 18:28:17,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2331, Unknown=40, NotChecked=98, Total=2652 [2021-12-06 18:28:17,401 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand has 36 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 34 states have internal predecessors, (80), 10 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2021-12-06 18:28:24,263 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_95| Int) (v_ArrVal_831 Int)) (and (= (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_95| v_ArrVal_831) |c_#valid|) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_95|) 0))) (exists ((v_ArrVal_833 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_833)))) is different from true [2021-12-06 18:28:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:28:41,661 INFO L93 Difference]: Finished difference Result 199 states and 241 transitions. [2021-12-06 18:28:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 18:28:41,662 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 34 states have internal predecessors, (80), 10 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) Word has length 117 [2021-12-06 18:28:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:28:41,663 INFO L225 Difference]: With dead ends: 199 [2021-12-06 18:28:41,663 INFO L226 Difference]: Without dead ends: 192 [2021-12-06 18:28:41,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 99 SyntacticMatches, 11 SemanticMatches, 75 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 98.7s TimeCoverageRelationStatistics Valid=391, Invalid=5109, Unknown=58, NotChecked=294, Total=5852 [2021-12-06 18:28:41,666 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 149 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1027 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:28:41,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 824 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 662 Invalid, 0 Unknown, 1027 Unchecked, 0.9s Time] [2021-12-06 18:28:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-12-06 18:28:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2021-12-06 18:28:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 138 states have (on average 1.1594202898550725) internal successors, (160), 140 states have internal predecessors, (160), 29 states have call successors, (29), 19 states have call predecessors, (29), 21 states have return successors, (40), 29 states have call predecessors, (40), 28 states have call successors, (40) [2021-12-06 18:28:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 229 transitions. [2021-12-06 18:28:41,677 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 229 transitions. Word has length 117 [2021-12-06 18:28:41,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:28:41,677 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 229 transitions. [2021-12-06 18:28:41,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 34 states have internal predecessors, (80), 10 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2021-12-06 18:28:41,678 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 229 transitions. [2021-12-06 18:28:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 18:28:41,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:28:41,679 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:28:41,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 18:28:41,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 18:28:41,881 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:28:41,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:28:41,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1040067285, now seen corresponding path program 1 times [2021-12-06 18:28:41,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:28:41,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040748908] [2021-12-06 18:28:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:41,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:28:41,955 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:28:41,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386349101] [2021-12-06 18:28:41,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:41,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:28:41,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:28:41,956 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:28:41,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 18:28:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:42,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 18:28:42,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:28:42,238 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 18:28:42,353 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 18:28:42,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 18:28:42,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 18:28:42,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:42,490 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 32 treesize of output 25 [2021-12-06 18:28:42,606 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1018 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1018) |c_#memory_$Pointer$.base|)) is different from true [2021-12-06 18:28:42,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 18:28:42,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:28:43,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:28:43,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040748908] [2021-12-06 18:28:43,083 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:28:43,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386349101] [2021-12-06 18:28:43,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386349101] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:28:43,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:28:43,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-12-06 18:28:43,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501625003] [2021-12-06 18:28:43,084 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 18:28:43,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 18:28:43,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:28:43,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 18:28:43,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=351, Unknown=6, NotChecked=38, Total=462 [2021-12-06 18:28:43,085 INFO L87 Difference]: Start difference. First operand 189 states and 229 transitions. Second operand has 21 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-06 18:28:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:28:44,358 INFO L93 Difference]: Finished difference Result 320 states and 390 transitions. [2021-12-06 18:28:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:28:44,358 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) Word has length 123 [2021-12-06 18:28:44,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:28:44,359 INFO L225 Difference]: With dead ends: 320 [2021-12-06 18:28:44,359 INFO L226 Difference]: Without dead ends: 208 [2021-12-06 18:28:44,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 172 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=94, Invalid=545, Unknown=15, NotChecked=48, Total=702 [2021-12-06 18:28:44,361 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 133 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 687 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:28:44,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 425 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 302 Invalid, 0 Unknown, 687 Unchecked, 0.3s Time] [2021-12-06 18:28:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-06 18:28:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 201. [2021-12-06 18:28:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 147 states have (on average 1.1564625850340136) internal successors, (170), 151 states have internal predecessors, (170), 30 states have call successors, (30), 20 states have call predecessors, (30), 23 states have return successors, (46), 29 states have call predecessors, (46), 29 states have call successors, (46) [2021-12-06 18:28:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 246 transitions. [2021-12-06 18:28:44,373 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 246 transitions. Word has length 123 [2021-12-06 18:28:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:28:44,373 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 246 transitions. [2021-12-06 18:28:44,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-06 18:28:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 246 transitions. [2021-12-06 18:28:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 18:28:44,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:28:44,375 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:28:44,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-06 18:28:44,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 18:28:44,576 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:28:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:28:44,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1013001683, now seen corresponding path program 1 times [2021-12-06 18:28:44,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:28:44,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347225967] [2021-12-06 18:28:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:44,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:28:44,648 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:28:44,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999620324] [2021-12-06 18:28:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:44,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:28:44,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:28:44,649 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:28:44,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 18:28:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:44,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:28:44,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:28:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 18:28:44,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:28:44,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:28:44,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347225967] [2021-12-06 18:28:44,986 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:28:44,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999620324] [2021-12-06 18:28:44,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999620324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:28:44,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:28:44,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:28:44,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046637793] [2021-12-06 18:28:44,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:28:44,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:28:44,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:28:44,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:28:44,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:28:44,987 INFO L87 Difference]: Start difference. First operand 201 states and 246 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 18:28:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:28:45,017 INFO L93 Difference]: Finished difference Result 358 states and 443 transitions. [2021-12-06 18:28:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:28:45,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 123 [2021-12-06 18:28:45,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:28:45,019 INFO L225 Difference]: With dead ends: 358 [2021-12-06 18:28:45,019 INFO L226 Difference]: Without dead ends: 203 [2021-12-06 18:28:45,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 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 18:28:45,020 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 7 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 379 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 18:28:45,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 379 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:28:45,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-06 18:28:45,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 198. [2021-12-06 18:28:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 145 states have (on average 1.1517241379310346) internal successors, (167), 148 states have internal predecessors, (167), 30 states have call successors, (30), 20 states have call predecessors, (30), 22 states have return successors, (41), 29 states have call predecessors, (41), 29 states have call successors, (41) [2021-12-06 18:28:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 238 transitions. [2021-12-06 18:28:45,032 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 238 transitions. Word has length 123 [2021-12-06 18:28:45,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:28:45,032 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 238 transitions. [2021-12-06 18:28:45,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 18:28:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 238 transitions. [2021-12-06 18:28:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 18:28:45,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:28:45,034 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:28:45,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 18:28:45,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 18:28:45,235 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:28:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:28:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash -645338938, now seen corresponding path program 1 times [2021-12-06 18:28:45,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:28:45,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784926995] [2021-12-06 18:28:45,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:45,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:28:45,310 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:28:45,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393792265] [2021-12-06 18:28:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:45,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:28:45,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:28:45,311 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:28:45,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 18:28:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:45,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 18:28:45,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:28:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 18:28:45,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:28:45,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:28:45,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784926995] [2021-12-06 18:28:45,739 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:28:45,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393792265] [2021-12-06 18:28:45,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393792265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:28:45,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:28:45,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 18:28:45,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496334098] [2021-12-06 18:28:45,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:28:45,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 18:28:45,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:28:45,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 18:28:45,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:28:45,740 INFO L87 Difference]: Start difference. First operand 198 states and 238 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 18:28:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:28:46,015 INFO L93 Difference]: Finished difference Result 266 states and 320 transitions. [2021-12-06 18:28:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:28:46,016 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2021-12-06 18:28:46,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:28:46,017 INFO L225 Difference]: With dead ends: 266 [2021-12-06 18:28:46,017 INFO L226 Difference]: Without dead ends: 207 [2021-12-06 18:28:46,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:28:46,018 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 15 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:28:46,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1809 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:28:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-06 18:28:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2021-12-06 18:28:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 151 states have (on average 1.1523178807947019) internal successors, (174), 155 states have internal predecessors, (174), 30 states have call successors, (30), 20 states have call predecessors, (30), 23 states have return successors, (44), 29 states have call predecessors, (44), 29 states have call successors, (44) [2021-12-06 18:28:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 248 transitions. [2021-12-06 18:28:46,028 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 248 transitions. Word has length 123 [2021-12-06 18:28:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:28:46,029 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 248 transitions. [2021-12-06 18:28:46,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 18:28:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 248 transitions. [2021-12-06 18:28:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 18:28:46,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:28:46,030 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:28:46,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 18:28:46,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:28:46,231 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:28:46,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:28:46,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1973683772, now seen corresponding path program 4 times [2021-12-06 18:28:46,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:28:46,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424274023] [2021-12-06 18:28:46,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:46,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:28:46,263 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:28:46,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065750036] [2021-12-06 18:28:46,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:28:46,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:28:46,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:28:46,264 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:28:46,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 18:28:46,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:28:46,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:28:46,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-06 18:28:46,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:28:46,777 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 11 treesize of output 7 [2021-12-06 18:28:46,797 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-12-06 18:28:46,797 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 22 treesize of output 21 [2021-12-06 18:28:46,838 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-12-06 18:28:46,838 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 3 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 18:28:46,892 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-12-06 18:28:46,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-12-06 18:28:46,959 INFO L354 Elim1Store]: treesize reduction 164, result has 17.6 percent of original size [2021-12-06 18:28:46,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 56 [2021-12-06 18:28:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 18:28:47,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:28:48,411 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 137 treesize of output 131 [2021-12-06 18:28:49,391 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 34 treesize of output 32 [2021-12-06 18:28:49,394 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 382 treesize of output 378 [2021-12-06 18:28:49,426 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 34 treesize of output 32 [2021-12-06 18:28:49,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:28:49,432 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 184 treesize of output 180 [2021-12-06 18:28:49,450 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 34 treesize of output 32 [2021-12-06 18:28:49,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:28:49,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:28:49,455 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 84 treesize of output 80 [2021-12-06 18:28:49,467 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 32 treesize of output 30 [2021-12-06 18:28:49,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:28:49,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:28:49,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:28:49,473 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 26 treesize of output 24 [2021-12-06 18:28:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 18:28:49,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:28:49,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424274023] [2021-12-06 18:28:49,954 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:28:49,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065750036] [2021-12-06 18:28:49,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065750036] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:28:49,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:28:49,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33 [2021-12-06 18:28:49,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037572878] [2021-12-06 18:28:49,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:28:49,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 18:28:49,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:28:49,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 18:28:49,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 18:28:49,955 INFO L87 Difference]: Start difference. First operand 205 states and 248 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 30 states have internal predecessors, (101), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 18:28:51,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:28:51,295 INFO L93 Difference]: Finished difference Result 221 states and 266 transitions. [2021-12-06 18:28:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 18:28:51,296 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 30 states have internal predecessors, (101), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 118 [2021-12-06 18:28:51,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:28:51,297 INFO L225 Difference]: With dead ends: 221 [2021-12-06 18:28:51,297 INFO L226 Difference]: Without dead ends: 214 [2021-12-06 18:28:51,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 204 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=167, Invalid=1315, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 18:28:51,298 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 47 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:28:51,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 2562 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 559 Invalid, 0 Unknown, 257 Unchecked, 0.9s Time] [2021-12-06 18:28:51,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-12-06 18:28:51,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 190. [2021-12-06 18:28:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 138 states have (on average 1.144927536231884) internal successors, (158), 143 states have internal predecessors, (158), 28 states have call successors, (28), 19 states have call predecessors, (28), 23 states have return successors, (41), 27 states have call predecessors, (41), 27 states have call successors, (41) [2021-12-06 18:28:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 227 transitions. [2021-12-06 18:28:51,309 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 227 transitions. Word has length 118 [2021-12-06 18:28:51,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:28:51,309 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 227 transitions. [2021-12-06 18:28:51,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 30 states have internal predecessors, (101), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 18:28:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 227 transitions. [2021-12-06 18:28:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 18:28:51,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:28:51,311 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:28:51,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 18:28:51,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:28:51,512 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:28:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:28:51,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1824760349, now seen corresponding path program 5 times [2021-12-06 18:28:51,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:28:51,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886681551] [2021-12-06 18:28:51,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:51,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:28:51,552 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:28:51,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208185824] [2021-12-06 18:28:51,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:28:51,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:28:51,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:28:51,553 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:28:51,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 18:28:53,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-06 18:28:53,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:28:53,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 240 conjunts are in the unsatisfiable core [2021-12-06 18:28:53,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:28:53,568 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 18:28:53,679 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 18:28:55,837 INFO L354 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2021-12-06 18:28:55,837 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 4 case distinctions, treesize of input 36 treesize of output 51 [2021-12-06 18:28:55,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:55,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:55,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:55,846 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:28:55,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-12-06 18:29:27,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:29:27,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:29:27,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:29:27,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:29:27,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:29:27,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:29:27,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:29:27,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:29:27,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:29:27,838 INFO L354 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2021-12-06 18:29:27,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 64 treesize of output 64 [2021-12-06 18:29:27,855 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:29:27,855 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 15 treesize of output 15 [2021-12-06 18:30:19,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:30:19,068 INFO L354 Elim1Store]: treesize reduction 20, result has 50.0 percent of original size [2021-12-06 18:30:19,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 103 [2021-12-06 18:31:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 72 refuted. 1 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:31:20,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:49,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:49,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886681551] [2021-12-06 18:32:49,487 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:32:49,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208185824] [2021-12-06 18:32:49,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208185824] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:49,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:32:49,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-12-06 18:32:49,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761963277] [2021-12-06 18:32:49,488 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:49,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-06 18:32:49,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:49,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-06 18:32:49,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3614, Unknown=54, NotChecked=0, Total=3906 [2021-12-06 18:32:49,490 INFO L87 Difference]: Start difference. First operand 190 states and 227 transitions. Second operand has 46 states, 41 states have (on average 2.073170731707317) internal successors, (85), 39 states have internal predecessors, (85), 12 states have call successors, (16), 9 states have call predecessors, (16), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2021-12-06 18:34:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:34:13,159 INFO L93 Difference]: Finished difference Result 247 states and 294 transitions. [2021-12-06 18:34:13,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 18:34:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 2.073170731707317) internal successors, (85), 39 states have internal predecessors, (85), 12 states have call successors, (16), 9 states have call predecessors, (16), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) Word has length 120 [2021-12-06 18:34:13,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:34:13,161 INFO L225 Difference]: With dead ends: 247 [2021-12-06 18:34:13,161 INFO L226 Difference]: Without dead ends: 238 [2021-12-06 18:34:13,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 90 SyntacticMatches, 10 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1776 ImplicationChecksByTransitivity, 264.9s TimeCoverageRelationStatistics Valid=410, Invalid=6309, Unknown=87, NotChecked=0, Total=6806 [2021-12-06 18:34:13,163 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 68 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 3027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2135 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:34:13,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 1820 Invalid, 3027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 858 Invalid, 0 Unknown, 2135 Unchecked, 1.3s Time] [2021-12-06 18:34:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-06 18:34:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 233. [2021-12-06 18:34:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 173 states have (on average 1.1445086705202312) internal successors, (198), 178 states have internal predecessors, (198), 32 states have call successors, (32), 23 states have call predecessors, (32), 27 states have return successors, (47), 31 states have call predecessors, (47), 31 states have call successors, (47) [2021-12-06 18:34:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 277 transitions. [2021-12-06 18:34:13,179 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 277 transitions. Word has length 120 [2021-12-06 18:34:13,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:34:13,179 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 277 transitions. [2021-12-06 18:34:13,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 2.073170731707317) internal successors, (85), 39 states have internal predecessors, (85), 12 states have call successors, (16), 9 states have call predecessors, (16), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2021-12-06 18:34:13,180 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 277 transitions. [2021-12-06 18:34:13,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 18:34:13,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:34:13,181 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:34:13,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 18:34:13,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 18:34:13,381 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:34:13,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:34:13,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1076191317, now seen corresponding path program 6 times [2021-12-06 18:34:13,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:34:13,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265609952] [2021-12-06 18:34:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:34:13,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:34:13,415 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:34:13,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289842846] [2021-12-06 18:34:13,416 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:34:13,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:34:13,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:34:13,416 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:34:13,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 18:34:15,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-12-06 18:34:15,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:34:15,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 2420 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-06 18:34:15,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:34:15,934 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 11 treesize of output 7 [2021-12-06 18:34:15,953 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 18:34:15,954 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 18:34:16,001 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-12-06 18:34:16,001 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 3 case distinctions, treesize of input 31 treesize of output 33 [2021-12-06 18:34:16,072 INFO L354 Elim1Store]: treesize reduction 115, result has 19.0 percent of original size [2021-12-06 18:34:16,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 46 [2021-12-06 18:34:16,171 INFO L354 Elim1Store]: treesize reduction 164, result has 17.6 percent of original size [2021-12-06 18:34:16,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 56 [2021-12-06 18:34:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 18:34:17,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:34:18,856 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 1440 treesize of output 1428 [2021-12-06 18:34:21,424 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 40 treesize of output 38 [2021-12-06 18:34:21,427 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 1524 treesize of output 1516 [2021-12-06 18:34:21,680 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 40 treesize of output 38 [2021-12-06 18:34:21,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:21,689 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 788 treesize of output 780 [2021-12-06 18:34:21,799 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 38 treesize of output 36 [2021-12-06 18:34:21,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:21,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:21,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:21,805 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 68 treesize of output 66 [2021-12-06 18:34:21,819 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 40 treesize of output 38 [2021-12-06 18:34:21,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:21,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:21,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:21,827 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 188 treesize of output 180 [2021-12-06 18:34:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 18:34:22,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:34:22,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265609952] [2021-12-06 18:34:22,367 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:34:22,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289842846] [2021-12-06 18:34:22,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289842846] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:34:22,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:34:22,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36 [2021-12-06 18:34:22,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620083123] [2021-12-06 18:34:22,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:34:22,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 18:34:22,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:34:22,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 18:34:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 18:34:22,369 INFO L87 Difference]: Start difference. First operand 233 states and 277 transitions. Second operand has 36 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 33 states have internal predecessors, (100), 6 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-06 18:34:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:34:26,921 INFO L93 Difference]: Finished difference Result 296 states and 353 transitions. [2021-12-06 18:34:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 18:34:26,923 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 33 states have internal predecessors, (100), 6 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 5 states have call successors, (18) Word has length 121 [2021-12-06 18:34:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:34:26,924 INFO L225 Difference]: With dead ends: 296 [2021-12-06 18:34:26,924 INFO L226 Difference]: Without dead ends: 248 [2021-12-06 18:34:26,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-12-06 18:34:26,926 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 65 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:34:26,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 2663 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 624 Invalid, 0 Unknown, 333 Unchecked, 1.4s Time] [2021-12-06 18:34:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-12-06 18:34:26,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 231. [2021-12-06 18:34:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 172 states have (on average 1.1395348837209303) internal successors, (196), 177 states have internal predecessors, (196), 31 states have call successors, (31), 23 states have call predecessors, (31), 27 states have return successors, (45), 30 states have call predecessors, (45), 30 states have call successors, (45) [2021-12-06 18:34:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 272 transitions. [2021-12-06 18:34:26,940 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 272 transitions. Word has length 121 [2021-12-06 18:34:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:34:26,940 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 272 transitions. [2021-12-06 18:34:26,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 33 states have internal predecessors, (100), 6 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-06 18:34:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 272 transitions. [2021-12-06 18:34:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 18:34:26,941 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:34:26,941 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:34:26,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 18:34:27,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 18:34:27,142 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:34:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:34:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash 49882012, now seen corresponding path program 7 times [2021-12-06 18:34:27,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:34:27,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749076963] [2021-12-06 18:34:27,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:34:27,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:34:27,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:34:27,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736696844] [2021-12-06 18:34:27,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:34:27,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:34:27,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:34:27,176 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:34:27,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 18:34:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:27,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-06 18:34:27,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:34:27,776 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 14 treesize of output 10 [2021-12-06 18:34:27,800 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-12-06 18:34:27,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 18:34:27,852 INFO L354 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2021-12-06 18:34:27,852 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 3 case distinctions, treesize of input 35 treesize of output 37 [2021-12-06 18:34:27,947 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-12-06 18:34:27,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-12-06 18:34:28,078 INFO L354 Elim1Store]: treesize reduction 164, result has 17.6 percent of original size [2021-12-06 18:34:28,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 56 [2021-12-06 18:34:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 11 proven. 43 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 18:34:28,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:34:30,778 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 137 treesize of output 131 [2021-12-06 18:34:33,020 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 40 treesize of output 38 [2021-12-06 18:34:33,022 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 782 treesize of output 778 [2021-12-06 18:34:33,054 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 38 treesize of output 36 [2021-12-06 18:34:33,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,059 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 26 treesize of output 24 [2021-12-06 18:34:33,067 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 40 treesize of output 38 [2021-12-06 18:34:33,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:34:33,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,073 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 40 treesize of output 38 [2021-12-06 18:34:33,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:34:33,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,081 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 40 treesize of output 38 [2021-12-06 18:34:33,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:34:33,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:34:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 31 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 18:34:33,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:34:33,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749076963] [2021-12-06 18:34:33,716 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:34:33,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736696844] [2021-12-06 18:34:33,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736696844] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:34:33,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:34:33,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 39 [2021-12-06 18:34:33,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655485948] [2021-12-06 18:34:33,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:34:33,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 18:34:33,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:34:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 18:34:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1336, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 18:34:33,718 INFO L87 Difference]: Start difference. First operand 231 states and 272 transitions. Second operand has 39 states, 39 states have (on average 2.8974358974358974) internal successors, (113), 36 states have internal predecessors, (113), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 18:34:36,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:34:36,849 INFO L93 Difference]: Finished difference Result 261 states and 311 transitions. [2021-12-06 18:34:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 18:34:36,849 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.8974358974358974) internal successors, (113), 36 states have internal predecessors, (113), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 124 [2021-12-06 18:34:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:34:36,851 INFO L225 Difference]: With dead ends: 261 [2021-12-06 18:34:36,851 INFO L226 Difference]: Without dead ends: 252 [2021-12-06 18:34:36,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=234, Invalid=2216, Unknown=0, NotChecked=0, Total=2450 [2021-12-06 18:34:36,853 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 79 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 332 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:34:36,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2458 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 752 Invalid, 0 Unknown, 332 Unchecked, 1.9s Time] [2021-12-06 18:34:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-12-06 18:34:36,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 221. [2021-12-06 18:34:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 164 states have (on average 1.1585365853658536) internal successors, (190), 169 states have internal predecessors, (190), 30 states have call successors, (30), 22 states have call predecessors, (30), 26 states have return successors, (43), 29 states have call predecessors, (43), 29 states have call successors, (43) [2021-12-06 18:34:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 263 transitions. [2021-12-06 18:34:36,867 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 263 transitions. Word has length 124 [2021-12-06 18:34:36,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:34:36,868 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 263 transitions. [2021-12-06 18:34:36,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.8974358974358974) internal successors, (113), 36 states have internal predecessors, (113), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 18:34:36,868 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 263 transitions. [2021-12-06 18:34:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 18:34:36,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:34:36,869 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 4, 4, 4, 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] [2021-12-06 18:34:36,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 18:34:37,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:34:37,071 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:34:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:34:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1141556981, now seen corresponding path program 8 times [2021-12-06 18:34:37,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:34:37,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89359138] [2021-12-06 18:34:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:34:37,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:34:37,131 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:34:37,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642405571] [2021-12-06 18:34:37,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:34:37,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:34:37,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:34:37,133 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:34:37,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 18:34:37,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:34:37,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:34:37,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 18:34:37,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:34:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-06 18:34:37,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:34:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-06 18:34:37,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:34:37,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89359138] [2021-12-06 18:34:37,967 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:34:37,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642405571] [2021-12-06 18:34:37,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642405571] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:34:37,967 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:34:37,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-06 18:34:37,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930825903] [2021-12-06 18:34:37,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:34:37,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 18:34:37,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:34:37,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 18:34:37,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:34:37,968 INFO L87 Difference]: Start difference. First operand 221 states and 263 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 18:34:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:34:38,926 INFO L93 Difference]: Finished difference Result 264 states and 314 transitions. [2021-12-06 18:34:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:34:38,927 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2021-12-06 18:34:38,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:34:38,928 INFO L225 Difference]: With dead ends: 264 [2021-12-06 18:34:38,928 INFO L226 Difference]: Without dead ends: 228 [2021-12-06 18:34:38,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-12-06 18:34:38,929 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 31 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:34:38,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 1011 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:34:38,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-06 18:34:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-12-06 18:34:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 171 states have (on average 1.152046783625731) internal successors, (197), 176 states have internal predecessors, (197), 30 states have call successors, (30), 22 states have call predecessors, (30), 26 states have return successors, (43), 29 states have call predecessors, (43), 29 states have call successors, (43) [2021-12-06 18:34:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 270 transitions. [2021-12-06 18:34:38,945 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 270 transitions. Word has length 127 [2021-12-06 18:34:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:34:38,946 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 270 transitions. [2021-12-06 18:34:38,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 18:34:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 270 transitions. [2021-12-06 18:34:38,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 18:34:38,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:34:38,947 INFO L514 BasicCegarLoop]: trace histogram [12, 7, 5, 5, 4, 4, 4, 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] [2021-12-06 18:34:38,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 18:34:39,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:34:39,148 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:34:39,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:34:39,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1917844227, now seen corresponding path program 9 times [2021-12-06 18:34:39,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:34:39,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634895920] [2021-12-06 18:34:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:34:39,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:34:39,215 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:34:39,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776082262] [2021-12-06 18:34:39,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:34:39,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:34:39,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:34:39,216 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:34:39,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 18:34:50,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-06 18:34:50,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:34:50,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 2567 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 18:34:50,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:34:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 15 proven. 78 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-06 18:34:50,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:34:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-06 18:34:52,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:34:52,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634895920] [2021-12-06 18:34:52,008 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:34:52,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776082262] [2021-12-06 18:34:52,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776082262] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:34:52,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:34:52,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2021-12-06 18:34:52,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392868670] [2021-12-06 18:34:52,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:34:52,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 18:34:52,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:34:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 18:34:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-12-06 18:34:52,010 INFO L87 Difference]: Start difference. First operand 228 states and 270 transitions. Second operand has 31 states, 31 states have (on average 2.935483870967742) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 18:35:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:35:06,444 INFO L93 Difference]: Finished difference Result 278 states and 335 transitions. [2021-12-06 18:35:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 18:35:06,445 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.935483870967742) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 134 [2021-12-06 18:35:06,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:35:06,446 INFO L225 Difference]: With dead ends: 278 [2021-12-06 18:35:06,447 INFO L226 Difference]: Without dead ends: 242 [2021-12-06 18:35:06,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=645, Invalid=1247, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 18:35:06,448 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 118 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:35:06,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 2056 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 18:35:06,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-12-06 18:35:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-12-06 18:35:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 185 states have (on average 1.1405405405405404) internal successors, (211), 190 states have internal predecessors, (211), 30 states have call successors, (30), 22 states have call predecessors, (30), 26 states have return successors, (43), 29 states have call predecessors, (43), 29 states have call successors, (43) [2021-12-06 18:35:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 284 transitions. [2021-12-06 18:35:06,468 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 284 transitions. Word has length 134 [2021-12-06 18:35:06,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:35:06,468 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 284 transitions. [2021-12-06 18:35:06,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.935483870967742) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 18:35:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 284 transitions. [2021-12-06 18:35:06,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-06 18:35:06,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:35:06,470 INFO L514 BasicCegarLoop]: trace histogram [26, 7, 5, 5, 4, 4, 4, 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] [2021-12-06 18:35:06,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 18:35:06,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:35:06,670 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:35:06,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash -722288957, now seen corresponding path program 10 times [2021-12-06 18:35:06,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:06,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014791175] [2021-12-06 18:35:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:06,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:06,709 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:35:06,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811068458] [2021-12-06 18:35:06,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:35:06,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:35:06,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:06,710 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:35:06,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 18:35:08,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:35:08,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:35:08,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2833 conjuncts, 304 conjunts are in the unsatisfiable core [2021-12-06 18:35:08,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:08,936 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 18:35:09,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:35:09,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 18:35:09,694 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2891 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2891))) is different from true [2021-12-06 18:35:09,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:35:09,990 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 18 treesize of output 20 [2021-12-06 18:35:09,999 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:35:09,999 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 18:35:10,865 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 24 treesize of output 12 [2021-12-06 18:35:10,974 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 11 treesize of output 7 [2021-12-06 18:35:11,025 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-12-06 18:35:11,025 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 22 treesize of output 21 [2021-12-06 18:35:11,108 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-12-06 18:35:11,108 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 3 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 18:35:11,256 INFO L354 Elim1Store]: treesize reduction 110, result has 19.1 percent of original size [2021-12-06 18:35:11,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 45 [2021-12-06 18:35:11,444 INFO L354 Elim1Store]: treesize reduction 178, result has 16.8 percent of original size [2021-12-06 18:35:11,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 58 [2021-12-06 18:35:11,694 INFO L354 Elim1Store]: treesize reduction 236, result has 15.7 percent of original size [2021-12-06 18:35:11,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 57 treesize of output 68 [2021-12-06 18:35:11,987 INFO L354 Elim1Store]: treesize reduction 332, result has 13.8 percent of original size [2021-12-06 18:35:11,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 67 treesize of output 81 [2021-12-06 18:35:12,352 INFO L354 Elim1Store]: treesize reduction 439, result has 12.5 percent of original size [2021-12-06 18:35:12,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 77 treesize of output 94 [2021-12-06 18:35:12,803 INFO L354 Elim1Store]: treesize reduction 560, result has 11.5 percent of original size [2021-12-06 18:35:12,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 87 treesize of output 107 [2021-12-06 18:35:13,275 INFO L354 Elim1Store]: treesize reduction 695, result has 10.7 percent of original size [2021-12-06 18:35:13,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 97 treesize of output 120 [2021-12-06 18:35:13,805 INFO L354 Elim1Store]: treesize reduction 776, result has 10.3 percent of original size [2021-12-06 18:35:13,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 102 treesize of output 128 [2021-12-06 18:35:14,454 INFO L354 Elim1Store]: treesize reduction 942, result has 9.4 percent of original size [2021-12-06 18:35:14,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 141 [2021-12-06 18:35:15,211 INFO L354 Elim1Store]: treesize reduction 1114, result has 8.8 percent of original size [2021-12-06 18:35:15,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 122 treesize of output 154 [2021-12-06 18:35:16,134 INFO L354 Elim1Store]: treesize reduction 1300, result has 8.3 percent of original size [2021-12-06 18:35:16,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 132 treesize of output 167 [2021-12-06 18:35:17,237 INFO L354 Elim1Store]: treesize reduction 1500, result has 7.9 percent of original size [2021-12-06 18:35:17,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 142 treesize of output 180 [2021-12-06 18:35:18,453 INFO L354 Elim1Store]: treesize reduction 1714, result has 7.5 percent of original size [2021-12-06 18:35:18,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 152 treesize of output 193 [2021-12-06 18:35:20,196 INFO L354 Elim1Store]: treesize reduction 1820, result has 7.3 percent of original size [2021-12-06 18:35:20,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 136 case distinctions, treesize of input 156 treesize of output 200 [2021-12-06 18:35:21,889 INFO L354 Elim1Store]: treesize reduction 2070, result has 6.8 percent of original size [2021-12-06 18:35:21,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 153 case distinctions, treesize of input 166 treesize of output 213 [2021-12-06 18:35:24,077 INFO L354 Elim1Store]: treesize reduction 2320, result has 6.5 percent of original size [2021-12-06 18:35:24,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 171 case distinctions, treesize of input 176 treesize of output 226 [2021-12-06 18:35:26,915 INFO L354 Elim1Store]: treesize reduction 2584, result has 6.2 percent of original size [2021-12-06 18:35:26,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 190 case distinctions, treesize of input 186 treesize of output 239 [2021-12-06 18:35:29,854 INFO L354 Elim1Store]: treesize reduction 2756, result has 6.1 percent of original size [2021-12-06 18:35:29,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 210 case distinctions, treesize of input 192 treesize of output 248 [2021-12-06 18:35:33,740 INFO L354 Elim1Store]: treesize reduction 3062, result has 5.8 percent of original size [2021-12-06 18:35:33,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 231 case distinctions, treesize of input 202 treesize of output 261 [2021-12-06 18:35:37,762 INFO L354 Elim1Store]: treesize reduction 3296, result has 5.6 percent of original size [2021-12-06 18:35:37,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 253 case distinctions, treesize of input 210 treesize of output 272 [2021-12-06 18:35:43,259 INFO L354 Elim1Store]: treesize reduction 3630, result has 5.4 percent of original size [2021-12-06 18:35:43,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 276 case distinctions, treesize of input 220 treesize of output 285 [2021-12-06 18:35:49,282 INFO L354 Elim1Store]: treesize reduction 3958, result has 5.2 percent of original size [2021-12-06 18:35:49,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 300 case distinctions, treesize of input 230 treesize of output 298 [2021-12-06 18:35:57,626 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 1456 DAG size of output: 128 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 18:35:57,627 INFO L354 Elim1Store]: treesize reduction 4196, result has 5.1 percent of original size [2021-12-06 18:35:57,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 325 case distinctions, treesize of input 237 treesize of output 308 [2021-12-06 18:36:14,693 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 1 proven. 442 refuted. 3 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 18:36:14,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:40:42,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-12-06 18:40:42,382 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-12-06 18:40:42,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:42,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014791175] [2021-12-06 18:40:42,383 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:40:42,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811068458] [2021-12-06 18:40:42,383 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-12-06 18:40:42,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:42,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-12-06 18:40:42,384 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-12-06 18:40:42,384 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-12-06 18:40:42,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 18:40:42,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-06 18:40:42,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 18:40:42,601 INFO L732 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:42,607 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:40:42,628 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-12-06 18:40:42,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:40:42 BoogieIcfgContainer [2021-12-06 18:40:42,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:40:42,656 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:40:42,656 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:40:42,656 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:40:42,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:26:44" (3/4) ... [2021-12-06 18:40:42,659 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 18:40:42,659 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:40:42,659 INFO L158 Benchmark]: Toolchain (without parser) took 840659.83ms. Allocated memory was 117.4MB in the beginning and 249.6MB in the end (delta: 132.1MB). Free memory was 84.9MB in the beginning and 174.2MB in the end (delta: -89.3MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2021-12-06 18:40:42,659 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory is still 43.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:40:42,659 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1614.99ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 84.6MB in the beginning and 64.4MB in the end (delta: 20.3MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2021-12-06 18:40:42,660 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.36ms. Allocated memory is still 142.6MB. Free memory was 64.4MB in the beginning and 96.6MB in the end (delta: -32.3MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2021-12-06 18:40:42,660 INFO L158 Benchmark]: Boogie Preprocessor took 61.34ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 91.7MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 18:40:42,660 INFO L158 Benchmark]: RCFGBuilder took 920.92ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 92.7MB in the end (delta: -1.0MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2021-12-06 18:40:42,660 INFO L158 Benchmark]: TraceAbstraction took 837935.08ms. Allocated memory was 142.6MB in the beginning and 249.6MB in the end (delta: 107.0MB). Free memory was 92.7MB in the beginning and 174.2MB in the end (delta: -81.5MB). Peak memory consumption was 166.7MB. Max. memory is 16.1GB. [2021-12-06 18:40:42,660 INFO L158 Benchmark]: Witness Printer took 2.65ms. Allocated memory is still 249.6MB. Free memory is still 174.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:40:42,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory is still 43.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1614.99ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 84.6MB in the beginning and 64.4MB in the end (delta: 20.3MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 116.36ms. Allocated memory is still 142.6MB. Free memory was 64.4MB in the beginning and 96.6MB in the end (delta: -32.3MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.34ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 91.7MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 920.92ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 92.7MB in the end (delta: -1.0MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. * TraceAbstraction took 837935.08ms. Allocated memory was 142.6MB in the beginning and 249.6MB in the end (delta: 107.0MB). Free memory was 92.7MB in the beginning and 174.2MB in the end (delta: -81.5MB). Peak memory consumption was 166.7MB. Max. memory is 16.1GB. * Witness Printer took 2.65ms. Allocated memory is still 249.6MB. Free memory is still 174.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of large string literal at line 7546, overapproximation of __builtin_umull_overflow at line 255, overapproximation of to_real at line -1. Possible FailurePath: [L2762-L2767] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7141] static __thread int tl_last_error = 0; [L7545-L7693] static struct aws_error_info errors[] = { [(AWS_ERROR_SUCCESS)-0x0000] = { .literal_name = "AWS_ERROR_SUCCESS", .error_code = (AWS_ERROR_SUCCESS), .error_str = ("Success."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SUCCESS" ", " "Success.", } , [(AWS_ERROR_OOM)-0x0000] = { .literal_name = "AWS_ERROR_OOM", .error_code = (AWS_ERROR_OOM), .error_str = ("Out of memory."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_OOM" ", " "Out of memory.", } , [(AWS_ERROR_UNKNOWN)-0x0000] = { .literal_name = "AWS_ERROR_UNKNOWN", .error_code = (AWS_ERROR_UNKNOWN), .error_str = ("Unknown error."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNKNOWN" ", " "Unknown error.", } , [(AWS_ERROR_SHORT_BUFFER)-0x0000] = { .literal_name = "AWS_ERROR_SHORT_BUFFER", .error_code = (AWS_ERROR_SHORT_BUFFER), .error_str = ("Buffer is not large enough to hold result."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SHORT_BUFFER" ", " "Buffer is not large enough to hold result.", } , [(AWS_ERROR_OVERFLOW_DETECTED)-0x0000] = { .literal_name = "AWS_ERROR_OVERFLOW_DETECTED", .error_code = (AWS_ERROR_OVERFLOW_DETECTED), .error_str = ("Fixed size value overflow was detected."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_OVERFLOW_DETECTED" ", " "Fixed size value overflow was detected.", } , [(AWS_ERROR_UNSUPPORTED_OPERATION)-0x0000] = { .literal_name = "AWS_ERROR_UNSUPPORTED_OPERATION", .error_code = (AWS_ERROR_UNSUPPORTED_OPERATION), .error_str = ("Unsupported operation."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNSUPPORTED_OPERATION" ", " "Unsupported operation.", } , [(AWS_ERROR_INVALID_BUFFER_SIZE)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_BUFFER_SIZE", .error_code = (AWS_ERROR_INVALID_BUFFER_SIZE), .error_str = ("Invalid buffer size."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_BUFFER_SIZE" ", " "Invalid buffer size.", } , [(AWS_ERROR_INVALID_HEX_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_HEX_STR", .error_code = (AWS_ERROR_INVALID_HEX_STR), .error_str = ("Invalid hex string."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_HEX_STR" ", " "Invalid hex string.", } , [(AWS_ERROR_INVALID_BASE64_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_BASE64_STR", .error_code = (AWS_ERROR_INVALID_BASE64_STR), .error_str = ("Invalid base64 string."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_BASE64_STR" ", " "Invalid base64 string.", } , [(AWS_ERROR_INVALID_INDEX)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_INDEX", .error_code = (AWS_ERROR_INVALID_INDEX), .error_str = ("Invalid index for list access."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_INDEX" ", " "Invalid index for list access.", } , [(AWS_ERROR_THREAD_INVALID_SETTINGS)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_INVALID_SETTINGS", .error_code = (AWS_ERROR_THREAD_INVALID_SETTINGS), .error_str = ("Invalid thread settings."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_INVALID_SETTINGS" ", " "Invalid thread settings.", } , [(AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE", .error_code = (AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE), .error_str = ("Insufficent resources for thread."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE" ", " "Insufficent resources for thread.", } , [(AWS_ERROR_THREAD_NO_PERMISSIONS)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NO_PERMISSIONS", .error_code = (AWS_ERROR_THREAD_NO_PERMISSIONS), .error_str = ("Insufficient permissions for thread operation."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NO_PERMISSIONS" ", " "Insufficient permissions for thread operation.", } , [(AWS_ERROR_THREAD_NOT_JOINABLE)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NOT_JOINABLE", .error_code = (AWS_ERROR_THREAD_NOT_JOINABLE), .error_str = ("Thread not joinable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NOT_JOINABLE" ", " "Thread not joinable.", } , [(AWS_ERROR_THREAD_NO_SUCH_THREAD_ID)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NO_SUCH_THREAD_ID", .error_code = (AWS_ERROR_THREAD_NO_SUCH_THREAD_ID), .error_str = ("No such thread ID."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NO_SUCH_THREAD_ID" ", " "No such thread ID.", } , [(AWS_ERROR_THREAD_DEADLOCK_DETECTED)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_DEADLOCK_DETECTED", .error_code = (AWS_ERROR_THREAD_DEADLOCK_DETECTED), .error_str = ("Deadlock detected in thread."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_DEADLOCK_DETECTED" ", " "Deadlock detected in thread.", } , [(AWS_ERROR_MUTEX_NOT_INIT)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_NOT_INIT", .error_code = (AWS_ERROR_MUTEX_NOT_INIT), .error_str = ("Mutex not initialized."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_NOT_INIT" ", " "Mutex not initialized.", } , [(AWS_ERROR_MUTEX_TIMEOUT)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_TIMEOUT", .error_code = (AWS_ERROR_MUTEX_TIMEOUT), .error_str = ("Mutex operation timed out."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_TIMEOUT" ", " "Mutex operation timed out.", } , [(AWS_ERROR_MUTEX_CALLER_NOT_OWNER)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_CALLER_NOT_OWNER", .error_code = (AWS_ERROR_MUTEX_CALLER_NOT_OWNER), .error_str = ("The caller of a mutex operation was not the owner."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_CALLER_NOT_OWNER" ", " "The caller of a mutex operation was not the owner.", } , [(AWS_ERROR_MUTEX_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_FAILED", .error_code = (AWS_ERROR_MUTEX_FAILED), .error_str = ("Mutex operation failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_FAILED" ", " "Mutex operation failed.", } , [(AWS_ERROR_COND_VARIABLE_INIT_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_INIT_FAILED", .error_code = (AWS_ERROR_COND_VARIABLE_INIT_FAILED), .error_str = ("Condition variable initialization failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_INIT_FAILED" ", " "Condition variable initialization failed.", } , [(AWS_ERROR_COND_VARIABLE_TIMED_OUT)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_TIMED_OUT", .error_code = (AWS_ERROR_COND_VARIABLE_TIMED_OUT), .error_str = ("Condition variable wait timed out."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_TIMED_OUT" ", " "Condition variable wait timed out.", } , [(AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN", .error_code = (AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN), .error_str = ("Condition variable unknown error."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN" ", " "Condition variable unknown error.", } , [(AWS_ERROR_CLOCK_FAILURE)-0x0000] = { .literal_name = "AWS_ERROR_CLOCK_FAILURE", .error_code = (AWS_ERROR_CLOCK_FAILURE), .error_str = ("Clock operation failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_CLOCK_FAILURE" ", " "Clock operation failed.", } , [(AWS_ERROR_LIST_EMPTY)-0x0000] = { .literal_name = "AWS_ERROR_LIST_EMPTY", .error_code = (AWS_ERROR_LIST_EMPTY), .error_str = ("Empty list."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_EMPTY" ", " "Empty list.", } , [(AWS_ERROR_DEST_COPY_TOO_SMALL)-0x0000] = { .literal_name = "AWS_ERROR_DEST_COPY_TOO_SMALL", .error_code = (AWS_ERROR_DEST_COPY_TOO_SMALL), .error_str = ("Destination of copy is too small."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_DEST_COPY_TOO_SMALL" ", " "Destination of copy is too small.", } , [(AWS_ERROR_LIST_EXCEEDS_MAX_SIZE)-0x0000] = { .literal_name = "AWS_ERROR_LIST_EXCEEDS_MAX_SIZE", .error_code = (AWS_ERROR_LIST_EXCEEDS_MAX_SIZE), .error_str = ("A requested operation on a list would exceed it's max size."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_EXCEEDS_MAX_SIZE" ", " "A requested operation on a list would exceed it's max size.", } , [(AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK)-0x0000] = { .literal_name = "AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK", .error_code = (AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK), .error_str = ("Attempt to shrink a list in static mode."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK" ", " "Attempt to shrink a list in static mode.", } , [(AWS_ERROR_PRIORITY_QUEUE_FULL)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_FULL", .error_code = (AWS_ERROR_PRIORITY_QUEUE_FULL), .error_str = ("Attempt to add items to a full preallocated queue in static mode."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_FULL" ", " "Attempt to add items to a full preallocated queue in static mode.", } , [(AWS_ERROR_PRIORITY_QUEUE_EMPTY)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_EMPTY", .error_code = (AWS_ERROR_PRIORITY_QUEUE_EMPTY), .error_str = ("Attempt to pop an item from an empty queue."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_EMPTY" ", " "Attempt to pop an item from an empty queue.", } , [(AWS_ERROR_PRIORITY_QUEUE_BAD_NODE)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_BAD_NODE", .error_code = (AWS_ERROR_PRIORITY_QUEUE_BAD_NODE), .error_str = ("Bad node handle passed to remove."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_BAD_NODE" ", " "Bad node handle passed to remove.", } , [(AWS_ERROR_HASHTBL_ITEM_NOT_FOUND)-0x0000] = { .literal_name = "AWS_ERROR_HASHTBL_ITEM_NOT_FOUND", .error_code = (AWS_ERROR_HASHTBL_ITEM_NOT_FOUND), .error_str = ("Item not found in hash table."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_HASHTBL_ITEM_NOT_FOUND" ", " "Item not found in hash table.", } , [(AWS_ERROR_INVALID_DATE_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_DATE_STR", .error_code = (AWS_ERROR_INVALID_DATE_STR), .error_str = ("Date string is invalid and cannot be parsed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_DATE_STR" ", " "Date string is invalid and cannot be parsed.", } , [(AWS_ERROR_INVALID_ARGUMENT)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_ARGUMENT", .error_code = (AWS_ERROR_INVALID_ARGUMENT), .error_str = ("An invalid argument was passed to a function."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_ARGUMENT" ", " "An invalid argument was passed to a function.", } , [(AWS_ERROR_RANDOM_GEN_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_RANDOM_GEN_FAILED", .error_code = (AWS_ERROR_RANDOM_GEN_FAILED), .error_str = ("A call to the random number generator failed. Retry later."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_RANDOM_GEN_FAILED" ", " "A call to the random number generator failed. Retry later.", } , [(AWS_ERROR_MALFORMED_INPUT_STRING)-0x0000] = { .literal_name = "AWS_ERROR_MALFORMED_INPUT_STRING", .error_code = (AWS_ERROR_MALFORMED_INPUT_STRING), .error_str = ("An input string was passed to a parser and the string was incorrectly formatted."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MALFORMED_INPUT_STRING" ", " "An input string was passed to a parser and the string was incorrectly formatted.", } , [(AWS_ERROR_UNIMPLEMENTED)-0x0000] = { .literal_name = "AWS_ERROR_UNIMPLEMENTED", .error_code = (AWS_ERROR_UNIMPLEMENTED), .error_str = ("A function was called, but is not implemented."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNIMPLEMENTED" ", " "A function was called, but is not implemented.", } , [(AWS_ERROR_INVALID_STATE)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_STATE", .error_code = (AWS_ERROR_INVALID_STATE), .error_str = ("An invalid state was encountered."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_STATE" ", " "An invalid state was encountered.", } , [(AWS_ERROR_ENVIRONMENT_GET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_GET", .error_code = (AWS_ERROR_ENVIRONMENT_GET), .error_str = ("System call failure when getting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_GET" ", " "System call failure when getting an environment variable.", } , [(AWS_ERROR_ENVIRONMENT_SET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_SET", .error_code = (AWS_ERROR_ENVIRONMENT_SET), .error_str = ("System call failure when setting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_SET" ", " "System call failure when setting an environment variable.", } , [(AWS_ERROR_ENVIRONMENT_UNSET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_UNSET", .error_code = (AWS_ERROR_ENVIRONMENT_UNSET), .error_str = ("System call failure when unsetting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_UNSET" ", " "System call failure when unsetting an environment variable.", } , [(AWS_ERROR_SYS_CALL_FAILURE)-0x0000] = { .literal_name = "AWS_ERROR_SYS_CALL_FAILURE", .error_code = (AWS_ERROR_SYS_CALL_FAILURE), .error_str = ("System call failure"), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SYS_CALL_FAILURE" ", " "System call failure", } , [(AWS_ERROR_FILE_INVALID_PATH)-0x0000] = { .literal_name = "AWS_ERROR_FILE_INVALID_PATH", .error_code = (AWS_ERROR_FILE_INVALID_PATH), .error_str = ("Invalid file path."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_FILE_INVALID_PATH" ", " "Invalid file path.", } , [(AWS_ERROR_MAX_FDS_EXCEEDED)-0x0000] = { .literal_name = "AWS_ERROR_MAX_FDS_EXCEEDED", .error_code = (AWS_ERROR_MAX_FDS_EXCEEDED), .error_str = ("The maximum number of fds has been exceeded."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MAX_FDS_EXCEEDED" ", " "The maximum number of fds has been exceeded.", } , [(AWS_ERROR_NO_PERMISSION)-0x0000] = { .literal_name = "AWS_ERROR_NO_PERMISSION", .error_code = (AWS_ERROR_NO_PERMISSION), .error_str = ("User does not have permission to perform the requested action."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_NO_PERMISSION" ", " "User does not have permission to perform the requested action.", } , [(AWS_ERROR_STREAM_UNSEEKABLE)-0x0000] = { .literal_name = "AWS_ERROR_STREAM_UNSEEKABLE", .error_code = (AWS_ERROR_STREAM_UNSEEKABLE), .error_str = ("Stream does not support seek operations"), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_STREAM_UNSEEKABLE" ", " "Stream does not support seek operations", } , }; [L7696-L7699] static struct aws_error_info_list s_list = { .error_list = errors, .count = (sizeof(errors) / sizeof((errors)[0])), }; [L7701-L7710] static struct aws_log_subject_info s_common_log_subject_infos[] = { { .subject_id = (AWS_LS_COMMON_GENERAL), .subject_name = ("aws-c-common"), .subject_description = ("Subject for aws-c-common logging that doesn't belong to any particular category") } , { .subject_id = (AWS_LS_COMMON_TASK_SCHEDULER), .subject_name = ("task-scheduler"), .subject_description = ("Subject for task scheduler or task specific logging.") } , }; [L7712-L7715] static struct aws_log_subject_info_list s_common_log_subject_list = { .subject_list = s_common_log_subject_infos, .count = (sizeof(s_common_log_subject_infos) / sizeof((s_common_log_subject_infos)[0])), }; [L7717-L7721] static _Bool s_common_library_initialized = 0 ; [L7748] CALL aws_array_list_clean_up_harness() [L7735] struct aws_array_list list = {0, __VERIFIER_nondet_ulong(), __VERIFIER_nondet_ulong(), __VERIFIER_nondet_ulong(), 0}; [L7738] CALL, EXPR aws_array_list_is_bounded(&list, 9223372036854775808U, 2) [L7005] EXPR list->item_size [L7004-L7005] _Bool item_size_is_bounded = list->item_size <= max_item_size; [L7008] EXPR list->length [L7007-L7008] _Bool length_is_bounded = list->length <= max_initial_item_allocation; [L7009] return item_size_is_bounded && length_is_bounded; [L7738] RET, EXPR aws_array_list_is_bounded(&list, 9223372036854775808U, 2) [L7738] CALL assume_abort_if_not(aws_array_list_is_bounded(&list, 9223372036854775808U, 2)) [L211] COND FALSE !(!cond) [L7738] RET assume_abort_if_not(aws_array_list_is_bounded(&list, 9223372036854775808U, 2)) [L7739] CALL ensure_array_list_has_allocated_data_member(&list) [L7013] EXPR list->current_size [L7013] list->current_size == 0 && list->length == 0 [L7013] EXPR list->length [L7013] list->current_size == 0 && list->length == 0 [L7013] COND TRUE list->current_size == 0 && list->length == 0 [L7014] EXPR list->data [L7014-L7016] CALL assume_abort_if_not(list->data == ((void *)0) ) [L211] COND FALSE !(!cond) [L7014-L7016] RET assume_abort_if_not(list->data == ((void *)0) ) [L7017] CALL, EXPR can_fail_allocator() [L2786] return &s_can_fail_allocator_static; [L7017] RET, EXPR can_fail_allocator() [L7017] list->alloc = can_fail_allocator() [L7739] RET ensure_array_list_has_allocated_data_member(&list) [L7740] CALL, EXPR aws_array_list_is_valid(&list) [L3263] COND FALSE !(!list) [L3268] size_t required_size = 0; [L3272] EXPR list->length [L3272] EXPR list->item_size [L3272] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2588] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2496] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2496] RET __CPROVER_overflow_mult(a, b) [L2496] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2498] *r = a * b [L2499] return (0); [L2588] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2588] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L3272] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L3270-L3272] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L3275] EXPR list->current_size [L3275] EXPR \read(required_size) [L3274-L3275] _Bool current_size_is_valid = (list->current_size >= required_size); [L3279] EXPR list->current_size [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) [L3279] EXPR list->data [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) [L3279-L3281] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L3277-L3281] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L3284] EXPR list->item_size [L3283-L3284] _Bool item_size_is_valid = (list->item_size != 0); [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L3268] size_t required_size = 0; [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L7740] RET, EXPR aws_array_list_is_valid(&list) [L7740] CALL assume_abort_if_not(aws_array_list_is_valid(&list)) [L211] COND FALSE !(!cond) [L7740] RET assume_abort_if_not(aws_array_list_is_valid(&list)) [L7743] CALL aws_array_list_clean_up(&list) [L3302] CALL, EXPR aws_is_mem_zeroed(&(*list), sizeof(*list)) [L2335] size_t i; [L2336] const uint8_t *buf_u8 = (const uint8_t *)buf; [L2337] i = 0 [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] [L2338] COND TRUE buf_u8[i] [L2339-L2341] return 0 ; [L3302] RET, EXPR aws_is_mem_zeroed(&(*list), sizeof(*list)) [L3302] EXPR aws_is_mem_zeroed(&(*list), sizeof(*list)) || aws_array_list_is_valid(list) [L3302] CALL, EXPR aws_array_list_is_valid(list) [L3263] COND FALSE !(!list) [L3268] size_t required_size = 0; [L3272] EXPR list->length [L3272] EXPR list->item_size [L3272] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2588] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2496] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2496] RET __CPROVER_overflow_mult(a, b) [L2496] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2498] *r = a * b [L2499] return (0); [L2588] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2588] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L3272] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L3270-L3272] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L3275] EXPR list->current_size [L3275] EXPR \read(required_size) [L3274-L3275] _Bool current_size_is_valid = (list->current_size >= required_size); [L3279] EXPR list->current_size [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) [L3279] EXPR list->data [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) [L3279-L3281] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L3277-L3281] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L3284] EXPR list->item_size [L3283-L3284] _Bool item_size_is_valid = (list->item_size != 0); [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L3268] size_t required_size = 0; [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L3302] RET, EXPR aws_array_list_is_valid(list) [L3302] EXPR aws_is_mem_zeroed(&(*list), sizeof(*list)) || aws_array_list_is_valid(list) [L3302] CALL assume_abort_if_not((aws_is_mem_zeroed(&(*list), sizeof(*list)) || aws_array_list_is_valid(list))) [L211] COND FALSE !(!cond) [L3302] RET assume_abort_if_not((aws_is_mem_zeroed(&(*list), sizeof(*list)) || aws_array_list_is_valid(list))) [L3303] EXPR list->alloc [L3303] list->alloc && list->data [L3303] EXPR list->data [L3303] list->alloc && list->data [L3303] COND FALSE !(list->alloc && list->data) [L3307] FCALL memset(&(*list), 0, sizeof(*list)) [L7743] RET aws_array_list_clean_up(&list) [L7746] CALL, EXPR aws_is_mem_zeroed(&(list), sizeof(list)) [L2335] size_t i; [L2336] const uint8_t *buf_u8 = (const uint8_t *)buf; [L2337] i = 0 [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] [L2338] COND TRUE buf_u8[i] [L2339-L2341] return 0 ; [L7746] RET, EXPR aws_is_mem_zeroed(&(list), sizeof(list)) [L7746] CALL __VERIFIER_assert(aws_is_mem_zeroed(&(list), sizeof(list))) [L223] COND TRUE !cond [L223] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 837.8s, OverallIterations: 22, TraceHistogramMax: 26, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 136.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1252 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1169 mSDsluCounter, 23348 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4948 IncrementalHoareTripleChecker+Unchecked, 20716 mSDsCounter, 539 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5936 IncrementalHoareTripleChecker+Invalid, 11423 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 539 mSolverCounterUnsat, 2632 mSDtfsCounter, 5936 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3472 GetRequests, 2935 SyntacticMatches, 27 SemanticMatches, 510 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5148 ImplicationChecksByTransitivity, 395.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=21, InterpolantAutomatonStates: 361, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 140 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 23.0s SatisfiabilityAnalysisTime, 671.1s InterpolantComputationTime, 2376 NumberOfCodeBlocks, 2368 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 3392 ConstructedInterpolants, 274 QuantifiedInterpolants, 37244 SizeOfPredicates, 262 NumberOfNonLiveVariables, 47035 ConjunctsInSsa, 1304 ConjunctsInUnsatCore, 31 InterpolantComputations, 9 PerfectInterpolantSequences, 1525/2492 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/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_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/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 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:40:44,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:40:44,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:40:44,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:40:44,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:40:44,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:40:44,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:40:44,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:40:44,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:40:44,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:40:44,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:40:44,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:40:44,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:40:44,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:40:44,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:40:44,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:40:44,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:40:44,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:40:44,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:40:44,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:40:44,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:40:44,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:40:44,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:40:44,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:40:44,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:40:44,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:40:44,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:40:44,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:40:44,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:40:44,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:40:44,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:40:44,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:40:44,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:40:44,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:40:44,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:40:44,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:40:44,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:40:44,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:40:44,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:40:44,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:40:44,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:40:44,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-06 18:40:44,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:40:44,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:40:44,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:40:44,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:40:44,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:40:44,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:40:44,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:40:44,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:40:44,101 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:40:44,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:40:44,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:40:44,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:40:44,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:40:44,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:40:44,102 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:40:44,102 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 18:40:44,102 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 18:40:44,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:40:44,103 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:40:44,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:40:44,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:40:44,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:40:44,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:40:44,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:40:44,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:40:44,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:40:44,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:40:44,105 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 18:40:44,105 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 18:40:44,105 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:40:44,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:40:44,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:40:44,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:40:44,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 18:40:44,106 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2021-12-06 18:40:44,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:40:44,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:40:44,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:40:44,350 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:40:44,351 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:40:44,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-12-06 18:40:44,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/data/7410b4efe/be1839a4618d4ed6a79ab2eb0fea5895/FLAGd584fd36a [2021-12-06 18:40:44,994 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:40:44,995 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-12-06 18:40:45,015 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/data/7410b4efe/be1839a4618d4ed6a79ab2eb0fea5895/FLAGd584fd36a [2021-12-06 18:40:45,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/data/7410b4efe/be1839a4618d4ed6a79ab2eb0fea5895 [2021-12-06 18:40:45,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:40:45,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:40:45,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:40:45,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:40:45,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:40:45,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:40:45" (1/1) ... [2021-12-06 18:40:45,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7bae60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:45, skipping insertion in model container [2021-12-06 18:40:45,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:40:45" (1/1) ... [2021-12-06 18:40:45,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:40:45,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:40:45,722 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_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-12-06 18:40:45,726 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_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-12-06 18:40:46,284 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 18:40:46,335 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,337 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,348 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,348 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,350 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,350 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,351 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,352 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,353 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,353 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,616 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 18:40:46,617 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 18:40:46,618 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 18:40:46,619 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 18:40:46,620 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 18:40:46,620 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 18:40:46,621 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 18:40:46,621 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 18:40:46,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 18:40:46,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 18:40:46,722 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,727 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:40:46,793 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 18:40:46,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:40:46,823 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_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-12-06 18:40:46,823 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_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-12-06 18:40:46,844 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 18:40:46,861 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,863 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,899 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 18:40:46,899 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 18:40:46,900 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 18:40:46,900 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 18:40:46,901 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 18:40:46,901 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 18:40:46,902 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 18:40:46,902 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 18:40:46,902 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 18:40:46,903 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 18:40:46,916 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:40:46,949 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:40:46,958 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_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-12-06 18:40:46,959 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_ea102094-bbde-4a91-b327-1231945098a3/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-12-06 18:40:46,985 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 18:40:46,995 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,995 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,995 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,995 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:46,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:47,000 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:47,000 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:47,001 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:47,001 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:47,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:47,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:47,003 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:47,003 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:47,024 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 18:40:47,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 18:40:47,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 18:40:47,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 18:40:47,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 18:40:47,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 18:40:47,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 18:40:47,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 18:40:47,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 18:40:47,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 18:40:47,038 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:47,042 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 18:40:47,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:40:47,230 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:40:47,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47 WrapperNode [2021-12-06 18:40:47,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:40:47,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:40:47,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:40:47,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:40:47,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47" (1/1) ... [2021-12-06 18:40:47,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47" (1/1) ... [2021-12-06 18:40:47,336 INFO L137 Inliner]: procedures = 710, calls = 1553, calls flagged for inlining = 48, calls inlined = 7, statements flattened = 576 [2021-12-06 18:40:47,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:40:47,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:40:47,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:40:47,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:40:47,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47" (1/1) ... [2021-12-06 18:40:47,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47" (1/1) ... [2021-12-06 18:40:47,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47" (1/1) ... [2021-12-06 18:40:47,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47" (1/1) ... [2021-12-06 18:40:47,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47" (1/1) ... [2021-12-06 18:40:47,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47" (1/1) ... [2021-12-06 18:40:47,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47" (1/1) ... [2021-12-06 18:40:47,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:40:47,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:40:47,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:40:47,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:40:47,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47" (1/1) ... [2021-12-06 18:40:47,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:40:47,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:40:47,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:40:47,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:40:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-06 18:40:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-06 18:40:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:40:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-06 18:40:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-06 18:40:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-06 18:40:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-06 18:40:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-06 18:40:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-06 18:40:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 18:40:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-06 18:40:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-06 18:40:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-06 18:40:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-06 18:40:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 18:40:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 18:40:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:40:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:40:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:40:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:40:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:40:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-06 18:40:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-06 18:40:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-06 18:40:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-06 18:40:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-06 18:40:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-06 18:40:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-06 18:40:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-06 18:40:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 18:40:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 18:40:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 18:40:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 18:40:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:40:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:40:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-06 18:40:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 18:40:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-06 18:40:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-06 18:40:47,462 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-06 18:40:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-06 18:40:47,653 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:40:47,655 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:40:48,831 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:40:48,838 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:40:48,838 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 18:40:48,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:40:48 BoogieIcfgContainer [2021-12-06 18:40:48,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:40:48,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:40:48,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:40:48,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:40:48,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:40:45" (1/3) ... [2021-12-06 18:40:48,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23776fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:40:48, skipping insertion in model container [2021-12-06 18:40:48,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:40:47" (2/3) ... [2021-12-06 18:40:48,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23776fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:40:48, skipping insertion in model container [2021-12-06 18:40:48,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:40:48" (3/3) ... [2021-12-06 18:40:48,849 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_clean_up_harness.i [2021-12-06 18:40:48,854 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:40:48,854 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:40:48,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:40:48,896 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 18:40:48,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:40:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 18:40:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 18:40:48,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:48,918 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-06 18:40:48,918 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:48,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:48,922 INFO L85 PathProgramCache]: Analyzing trace with hash 213945854, now seen corresponding path program 1 times [2021-12-06 18:40:48,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:40:48,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289295057] [2021-12-06 18:40:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:48,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:40:48,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:40:48,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:40:48,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 18:40:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:49,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 18:40:49,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:40:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 18:40:49,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:40:49,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:40:49,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289295057] [2021-12-06 18:40:49,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289295057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:49,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:49,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:40:49,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351336701] [2021-12-06 18:40:49,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:49,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:40:49,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:40:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:40:49,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:40:49,570 INFO L87 Difference]: Start difference. First operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 18:40:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:49,594 INFO L93 Difference]: Finished difference Result 221 states and 288 transitions. [2021-12-06 18:40:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:40:49,596 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2021-12-06 18:40:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:49,602 INFO L225 Difference]: With dead ends: 221 [2021-12-06 18:40:49,602 INFO L226 Difference]: Without dead ends: 107 [2021-12-06 18:40:49,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:40:49,608 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:49,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:40:49,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-06 18:40:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-12-06 18:40:49,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 states have internal predecessors, (87), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-06 18:40:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2021-12-06 18:40:49,643 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 65 [2021-12-06 18:40:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:49,643 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2021-12-06 18:40:49,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 18:40:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2021-12-06 18:40:49,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 18:40:49,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:49,647 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:49,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:40:49,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:40:49,856 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:49,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:49,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1475951998, now seen corresponding path program 1 times [2021-12-06 18:40:49,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:40:49,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850044837] [2021-12-06 18:40:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:49,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:40:49,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:40:49,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:40:49,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 18:40:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:50,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:40:50,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:40:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 18:40:50,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:40:50,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:40:50,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850044837] [2021-12-06 18:40:50,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850044837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:50,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:50,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:40:50,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150110285] [2021-12-06 18:40:50,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:50,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:40:50,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:40:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:40:50,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:40:50,558 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 18:40:50,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:50,715 INFO L93 Difference]: Finished difference Result 182 states and 221 transitions. [2021-12-06 18:40:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:40:50,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2021-12-06 18:40:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:50,718 INFO L225 Difference]: With dead ends: 182 [2021-12-06 18:40:50,718 INFO L226 Difference]: Without dead ends: 109 [2021-12-06 18:40:50,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 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 18:40:50,720 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 35 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:50,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 423 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:40:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-06 18:40:50,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-12-06 18:40:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 74 states have internal predecessors, (88), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-06 18:40:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-12-06 18:40:50,731 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 71 [2021-12-06 18:40:50,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:50,732 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-12-06 18:40:50,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 18:40:50,732 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2021-12-06 18:40:50,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 18:40:50,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:50,735 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-06 18:40:50,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 18:40:50,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:40:50,937 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:50,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1492369144, now seen corresponding path program 1 times [2021-12-06 18:40:50,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:40:50,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288899914] [2021-12-06 18:40:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:50,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:40:50,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:40:50,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:40:50,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 18:40:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:51,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:40:51,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:40:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 18:40:51,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:40:51,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:40:51,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288899914] [2021-12-06 18:40:51,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288899914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:51,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:51,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:40:51,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490231334] [2021-12-06 18:40:51,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:51,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:40:51,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:40:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:40:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:40:51,790 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:40:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:51,869 INFO L93 Difference]: Finished difference Result 189 states and 231 transitions. [2021-12-06 18:40:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:40:51,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2021-12-06 18:40:51,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:51,873 INFO L225 Difference]: With dead ends: 189 [2021-12-06 18:40:51,873 INFO L226 Difference]: Without dead ends: 114 [2021-12-06 18:40:51,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 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 18:40:51,874 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 10 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:51,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 377 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:40:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-06 18:40:51,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2021-12-06 18:40:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.2) internal successors, (90), 76 states have internal predecessors, (90), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-06 18:40:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2021-12-06 18:40:51,885 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 86 [2021-12-06 18:40:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:51,885 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2021-12-06 18:40:51,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:40:51,885 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2021-12-06 18:40:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 18:40:51,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:51,887 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-06 18:40:51,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 18:40:52,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:40:52,089 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:52,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash 874325450, now seen corresponding path program 1 times [2021-12-06 18:40:52,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:40:52,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524747955] [2021-12-06 18:40:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:52,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:40:52,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:40:52,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:40:52,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 18:40:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:52,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:40:52,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:40:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:40:52,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:40:52,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:40:52,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524747955] [2021-12-06 18:40:52,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524747955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:52,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:52,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:40:52,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338760782] [2021-12-06 18:40:52,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:52,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:40:52,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:40:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:40:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:40:52,855 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:40:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:52,919 INFO L93 Difference]: Finished difference Result 193 states and 233 transitions. [2021-12-06 18:40:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:40:52,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2021-12-06 18:40:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:52,921 INFO L225 Difference]: With dead ends: 193 [2021-12-06 18:40:52,921 INFO L226 Difference]: Without dead ends: 116 [2021-12-06 18:40:52,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 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 18:40:52,922 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 7 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:52,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 370 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:40:52,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-06 18:40:52,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2021-12-06 18:40:52,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-06 18:40:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2021-12-06 18:40:52,931 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 86 [2021-12-06 18:40:52,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:52,932 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2021-12-06 18:40:52,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:40:52,932 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2021-12-06 18:40:52,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 18:40:52,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:52,933 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-06 18:40:52,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 18:40:53,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:40:53,135 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:53,137 INFO L85 PathProgramCache]: Analyzing trace with hash 261547704, now seen corresponding path program 1 times [2021-12-06 18:40:53,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:40:53,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708323119] [2021-12-06 18:40:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:53,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:40:53,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:40:53,145 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:40:53,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 18:40:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:53,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:40:53,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:40:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:40:53,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:40:53,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:40:53,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708323119] [2021-12-06 18:40:53,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708323119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:53,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:53,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:40:53,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961500714] [2021-12-06 18:40:53,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:53,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:40:53,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:40:53,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:40:53,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:40:53,984 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:40:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:54,022 INFO L93 Difference]: Finished difference Result 160 states and 195 transitions. [2021-12-06 18:40:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:40:54,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2021-12-06 18:40:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:54,024 INFO L225 Difference]: With dead ends: 160 [2021-12-06 18:40:54,024 INFO L226 Difference]: Without dead ends: 120 [2021-12-06 18:40:54,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 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 18:40:54,026 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 4 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:54,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 515 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:40:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-06 18:40:54,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2021-12-06 18:40:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 80 states have internal predecessors, (94), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2021-12-06 18:40:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2021-12-06 18:40:54,039 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 86 [2021-12-06 18:40:54,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:54,039 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2021-12-06 18:40:54,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:40:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2021-12-06 18:40:54,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 18:40:54,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:54,042 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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 18:40:54,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 18:40:54,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:40:54,243 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:54,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:54,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2061885074, now seen corresponding path program 1 times [2021-12-06 18:40:54,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:40:54,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260667750] [2021-12-06 18:40:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:54,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:40:54,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:40:54,254 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:40:54,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 18:40:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:54,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:40:54,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:40:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:40:55,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:40:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 18:40:55,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:40:55,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260667750] [2021-12-06 18:40:55,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260667750] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:40:55,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:40:55,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 18:40:55,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325215957] [2021-12-06 18:40:55,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:40:55,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:40:55,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:40:55,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:40:55,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:40:55,318 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 18:40:55,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:55,540 INFO L93 Difference]: Finished difference Result 214 states and 262 transitions. [2021-12-06 18:40:55,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:40:55,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 89 [2021-12-06 18:40:55,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:55,541 INFO L225 Difference]: With dead ends: 214 [2021-12-06 18:40:55,541 INFO L226 Difference]: Without dead ends: 131 [2021-12-06 18:40:55,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:40:55,543 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 28 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:55,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 743 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:40:55,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-06 18:40:55,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2021-12-06 18:40:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 89 states have internal predecessors, (106), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2021-12-06 18:40:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 152 transitions. [2021-12-06 18:40:55,551 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 152 transitions. Word has length 89 [2021-12-06 18:40:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:55,552 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 152 transitions. [2021-12-06 18:40:55,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 18:40:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 152 transitions. [2021-12-06 18:40:55,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 18:40:55,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:55,553 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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 18:40:55,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 18:40:55,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:40:55,755 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -932359201, now seen corresponding path program 1 times [2021-12-06 18:40:55,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:40:55,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129496160] [2021-12-06 18:40:55,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:55,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:40:55,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:40:55,764 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:40:55,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 18:40:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:56,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:40:56,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:40:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 18:40:56,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:40:56,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:40:56,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129496160] [2021-12-06 18:40:56,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129496160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:56,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:56,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:40:56,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669764089] [2021-12-06 18:40:56,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:56,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:40:56,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:40:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:40:56,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:40:56,627 INFO L87 Difference]: Start difference. First operand 125 states and 152 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 18:40:56,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:56,804 INFO L93 Difference]: Finished difference Result 177 states and 214 transitions. [2021-12-06 18:40:56,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:40:56,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 92 [2021-12-06 18:40:56,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:56,806 INFO L225 Difference]: With dead ends: 177 [2021-12-06 18:40:56,806 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 18:40:56,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:40:56,807 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 46 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:56,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 515 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:40:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 18:40:56,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-12-06 18:40:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 87 states have internal predecessors, (104), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-06 18:40:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 149 transitions. [2021-12-06 18:40:56,815 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 149 transitions. Word has length 92 [2021-12-06 18:40:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:56,815 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 149 transitions. [2021-12-06 18:40:56,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 18:40:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 149 transitions. [2021-12-06 18:40:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 18:40:56,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:56,817 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:40:56,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 18:40:57,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:40:57,019 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash -778390853, now seen corresponding path program 1 times [2021-12-06 18:40:57,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:40:57,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370619213] [2021-12-06 18:40:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:57,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:40:57,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:40:57,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:40:57,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 18:40:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:57,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:40:57,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:40:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 18:40:57,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:40:57,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:40:57,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370619213] [2021-12-06 18:40:57,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370619213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:57,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:57,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:40:57,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22388701] [2021-12-06 18:40:57,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:57,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:40:57,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:40:57,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:40:57,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:40:57,965 INFO L87 Difference]: Start difference. First operand 123 states and 149 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:40:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:57,995 INFO L93 Difference]: Finished difference Result 154 states and 185 transitions. [2021-12-06 18:40:57,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:40:57,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2021-12-06 18:40:57,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:57,998 INFO L225 Difference]: With dead ends: 154 [2021-12-06 18:40:57,998 INFO L226 Difference]: Without dead ends: 124 [2021-12-06 18:40:57,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 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 18:40:57,999 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 2 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:57,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 379 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:40:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-06 18:40:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-12-06 18:40:58,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 88 states have internal predecessors, (105), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-06 18:40:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2021-12-06 18:40:58,008 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 107 [2021-12-06 18:40:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:58,009 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2021-12-06 18:40:58,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:40:58,009 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2021-12-06 18:40:58,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 18:40:58,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:58,011 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:40:58,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-06 18:40:58,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:40:58,212 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:40:58,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:58,214 INFO L85 PathProgramCache]: Analyzing trace with hash 99295452, now seen corresponding path program 1 times [2021-12-06 18:40:58,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:40:58,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383521182] [2021-12-06 18:40:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:58,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:40:58,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:40:58,222 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:40:58,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea102094-bbde-4a91-b327-1231945098a3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 18:40:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat