./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:39:46,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:39:46,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:39:46,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:39:46,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:39:46,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:39:46,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:39:46,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:39:46,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:39:46,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:39:46,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:39:46,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:39:46,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:39:46,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:39:46,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:39:46,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:39:46,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:39:46,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:39:46,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:39:46,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:39:46,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:39:46,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:39:46,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:39:46,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:39:46,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:39:46,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:39:46,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:39:46,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:39:46,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:39:46,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:39:46,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:39:46,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:39:46,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:39:46,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:39:46,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:39:46,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:39:46,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:39:46,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:39:46,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:39:46,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:39:46,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:39:46,705 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:39:46,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:39:46,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:39:46,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:39:46,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:39:46,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:39:46,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:39:46,767 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:39:46,767 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:39:46,767 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:39:46,768 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:39:46,769 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:39:46,770 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:39:46,770 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:39:46,770 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:39:46,770 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:39:46,771 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:39:46,771 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:39:46,771 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:39:46,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:39:46,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:39:46,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:39:46,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:39:46,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:39:46,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:39:46,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:39:46,776 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:39:46,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:39:46,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:39:46,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:39:46,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:46,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:39:46,778 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:39:46,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:39:46,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:39:46,779 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:39:46,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:39:46,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:39:46,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:39:46,781 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_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 [2022-10-17 17:39:47,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:39:47,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:39:47,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:39:47,220 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:39:47,221 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:39:47,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2022-10-17 17:39:47,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/data/ef119d6e6/9449df144f534922842cdf7a8785d5d4/FLAG92f0826ed [2022-10-17 17:39:48,360 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:39:48,361 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2022-10-17 17:39:48,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/data/ef119d6e6/9449df144f534922842cdf7a8785d5d4/FLAG92f0826ed [2022-10-17 17:39:48,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/data/ef119d6e6/9449df144f534922842cdf7a8785d5d4 [2022-10-17 17:39:48,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:39:48,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:39:48,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:48,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:39:48,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:39:48,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:48" (1/1) ... [2022-10-17 17:39:48,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411ab3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:48, skipping insertion in model container [2022-10-17 17:39:48,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:48" (1/1) ... [2022-10-17 17:39:48,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:39:48,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:39:49,486 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_e9390f3d-0d1d-46ae-acad-09c980035901/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2022-10-17 17:39:49,495 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_e9390f3d-0d1d-46ae-acad-09c980035901/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2022-10-17 17:39:50,884 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,885 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,886 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,887 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,889 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,908 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,909 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,911 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,912 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,915 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,917 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,918 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:50,918 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:51,608 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:39:51,609 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:39:51,611 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:39:51,612 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:39:51,614 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:39:51,615 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:39:51,616 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:39:51,617 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:39:51,617 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:39:51,618 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:39:51,892 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:39:52,503 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,505 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,539 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,539 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,546 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,547 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,571 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,575 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,576 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,576 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,577 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,578 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,578 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:52,699 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:39:52,729 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_e9390f3d-0d1d-46ae-acad-09c980035901/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2022-10-17 17:39:52,737 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_e9390f3d-0d1d-46ae-acad-09c980035901/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2022-10-17 17:39:52,798 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,799 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,800 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,800 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,801 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,813 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,815 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,816 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,817 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,819 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:52,911 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:39:52,912 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:39:52,913 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:39:52,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:39:52,915 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:39:52,917 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:39:52,918 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:39:52,919 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:39:52,919 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:39:52,920 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:39:52,967 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:39:53,121 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,121 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,131 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,133 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,137 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,138 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,157 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,158 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,159 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,159 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,160 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,160 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,161 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:39:53,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:53,652 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:39:53,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53 WrapperNode [2022-10-17 17:39:53,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:53,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:53,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:39:53,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:39:53,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (1/1) ... [2022-10-17 17:39:53,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (1/1) ... [2022-10-17 17:39:54,020 INFO L138 Inliner]: procedures = 775, calls = 2429, calls flagged for inlining = 66, calls inlined = 11, statements flattened = 779 [2022-10-17 17:39:54,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:54,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:39:54,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:39:54,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:39:54,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (1/1) ... [2022-10-17 17:39:54,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (1/1) ... [2022-10-17 17:39:54,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (1/1) ... [2022-10-17 17:39:54,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (1/1) ... [2022-10-17 17:39:54,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (1/1) ... [2022-10-17 17:39:54,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (1/1) ... [2022-10-17 17:39:54,149 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (1/1) ... [2022-10-17 17:39:54,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (1/1) ... [2022-10-17 17:39:54,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:39:54,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:39:54,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:39:54,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:39:54,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (1/1) ... [2022-10-17 17:39:54,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:54,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:54,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:39:54,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:39:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 17:39:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-10-17 17:39:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-10-17 17:39:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:39:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-10-17 17:39:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-10-17 17:39:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:39:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:39:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-10-17 17:39:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-10-17 17:39:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:39:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:39:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:39:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:39:54,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:39:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-10-17 17:39:54,326 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-10-17 17:39:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:39:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-10-17 17:39:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-10-17 17:39:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:39:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:39:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-10-17 17:39:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-10-17 17:39:54,328 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2022-10-17 17:39:54,328 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2022-10-17 17:39:54,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:39:54,329 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-10-17 17:39:54,329 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-10-17 17:39:54,329 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2022-10-17 17:39:54,329 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2022-10-17 17:39:54,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 17:39:54,329 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-10-17 17:39:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-10-17 17:39:54,331 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:39:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:39:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-10-17 17:39:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-10-17 17:39:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:39:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-10-17 17:39:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-10-17 17:39:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-10-17 17:39:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-10-17 17:39:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-10-17 17:39:54,344 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-10-17 17:39:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2022-10-17 17:39:54,345 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2022-10-17 17:39:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:39:54,883 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:39:54,886 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:39:56,899 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2022-10-17 17:39:56,927 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:39:57,177 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:39:57,177 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 17:39:57,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:57 BoogieIcfgContainer [2022-10-17 17:39:57,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:39:57,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:39:57,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:39:57,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:39:57,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:39:48" (1/3) ... [2022-10-17 17:39:57,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111b8170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:57, skipping insertion in model container [2022-10-17 17:39:57,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:53" (2/3) ... [2022-10-17 17:39:57,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111b8170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:57, skipping insertion in model container [2022-10-17 17:39:57,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:57" (3/3) ... [2022-10-17 17:39:57,193 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_unbounded_harness.i [2022-10-17 17:39:57,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:39:57,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:39:57,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:39:57,318 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@43ac7dfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:39:57,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:39:57,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 73 states have internal predecessors, (89), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-10-17 17:39:57,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 17:39:57,338 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:57,339 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:57,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:57,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:57,349 INFO L85 PathProgramCache]: Analyzing trace with hash 721841224, now seen corresponding path program 1 times [2022-10-17 17:39:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:57,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974676250] [2022-10-17 17:39:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:57,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 17:39:58,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:58,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974676250] [2022-10-17 17:39:58,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974676250] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:58,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:58,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:39:58,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77507638] [2022-10-17 17:39:58,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:58,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:39:58,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:58,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:39:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:39:58,619 INFO L87 Difference]: Start difference. First operand has 125 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 73 states have internal predecessors, (89), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 17:39:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:59,940 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2022-10-17 17:39:59,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:39:59,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 44 [2022-10-17 17:39:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:59,964 INFO L225 Difference]: With dead ends: 157 [2022-10-17 17:39:59,964 INFO L226 Difference]: Without dead ends: 122 [2022-10-17 17:39:59,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:59,981 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 5 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:59,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 395 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 17:40:00,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-10-17 17:40:00,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-10-17 17:40:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 71 states have internal predecessors, (82), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-10-17 17:40:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 149 transitions. [2022-10-17 17:40:00,061 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 149 transitions. Word has length 44 [2022-10-17 17:40:00,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:00,062 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 149 transitions. [2022-10-17 17:40:00,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 17:40:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 149 transitions. [2022-10-17 17:40:00,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-17 17:40:00,068 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:00,069 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:00,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:40:00,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash -492610549, now seen corresponding path program 1 times [2022-10-17 17:40:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:00,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888148216] [2022-10-17 17:40:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:00,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:00,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:40:00,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065242367] [2022-10-17 17:40:00,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:00,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:00,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:00,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:00,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:40:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:01,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:40:01,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 17:40:01,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:40:01,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:01,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888148216] [2022-10-17 17:40:01,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:40:01,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065242367] [2022-10-17 17:40:01,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065242367] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:01,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:01,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:40:01,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100590875] [2022-10-17 17:40:01,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:01,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:40:01,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:01,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:40:01,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:40:01,193 INFO L87 Difference]: Start difference. First operand 122 states and 149 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:40:02,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:02,724 INFO L93 Difference]: Finished difference Result 208 states and 251 transitions. [2022-10-17 17:40:02,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:40:02,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2022-10-17 17:40:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:02,729 INFO L225 Difference]: With dead ends: 208 [2022-10-17 17:40:02,730 INFO L226 Difference]: Without dead ends: 126 [2022-10-17 17:40:02,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:40:02,733 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:02,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 505 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 17:40:02,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-10-17 17:40:02,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-10-17 17:40:02,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 74 states have internal predecessors, (85), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (36), 34 states have call predecessors, (36), 33 states have call successors, (36) [2022-10-17 17:40:02,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2022-10-17 17:40:02,757 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 64 [2022-10-17 17:40:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:02,758 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2022-10-17 17:40:02,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:40:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2022-10-17 17:40:02,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-17 17:40:02,762 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:02,763 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:02,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:02,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:02,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1773700383, now seen corresponding path program 1 times [2022-10-17 17:40:02,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:02,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685385498] [2022-10-17 17:40:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 17:40:05,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:05,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685385498] [2022-10-17 17:40:05,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685385498] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:05,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:05,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:40:05,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788967269] [2022-10-17 17:40:05,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:05,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:40:05,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:05,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:40:05,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:40:05,298 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 17:40:07,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:07,244 INFO L93 Difference]: Finished difference Result 154 states and 186 transitions. [2022-10-17 17:40:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:40:07,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 68 [2022-10-17 17:40:07,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:07,247 INFO L225 Difference]: With dead ends: 154 [2022-10-17 17:40:07,247 INFO L226 Difference]: Without dead ends: 128 [2022-10-17 17:40:07,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:40:07,249 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 10 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:07,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 457 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-17 17:40:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-10-17 17:40:07,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-10-17 17:40:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 74 states have (on average 1.162162162162162) internal successors, (86), 76 states have internal predecessors, (86), 34 states have call successors, (34), 17 states have call predecessors, (34), 19 states have return successors, (37), 34 states have call predecessors, (37), 33 states have call successors, (37) [2022-10-17 17:40:07,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 157 transitions. [2022-10-17 17:40:07,270 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 157 transitions. Word has length 68 [2022-10-17 17:40:07,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:07,271 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 157 transitions. [2022-10-17 17:40:07,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 17:40:07,272 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 157 transitions. [2022-10-17 17:40:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-17 17:40:07,274 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:07,274 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:07,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:40:07,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:07,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:07,276 INFO L85 PathProgramCache]: Analyzing trace with hash -225829148, now seen corresponding path program 1 times [2022-10-17 17:40:07,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:07,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622447217] [2022-10-17 17:40:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:07,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 17:40:08,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:08,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622447217] [2022-10-17 17:40:08,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622447217] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:08,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:08,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 17:40:08,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429406017] [2022-10-17 17:40:08,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:08,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:40:08,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:40:08,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:40:08,988 INFO L87 Difference]: Start difference. First operand 128 states and 157 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-10-17 17:40:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:11,457 INFO L93 Difference]: Finished difference Result 161 states and 193 transitions. [2022-10-17 17:40:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 17:40:11,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 74 [2022-10-17 17:40:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:11,460 INFO L225 Difference]: With dead ends: 161 [2022-10-17 17:40:11,460 INFO L226 Difference]: Without dead ends: 133 [2022-10-17 17:40:11,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-17 17:40:11,462 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 15 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:11,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 810 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 17:40:11,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-10-17 17:40:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2022-10-17 17:40:11,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 78 states have internal predecessors, (88), 34 states have call successors, (34), 17 states have call predecessors, (34), 20 states have return successors, (38), 35 states have call predecessors, (38), 33 states have call successors, (38) [2022-10-17 17:40:11,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2022-10-17 17:40:11,485 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 74 [2022-10-17 17:40:11,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:11,486 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2022-10-17 17:40:11,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-10-17 17:40:11,487 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2022-10-17 17:40:11,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-17 17:40:11,489 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:11,489 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:40:11,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:11,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:11,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1577890991, now seen corresponding path program 1 times [2022-10-17 17:40:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:11,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729465879] [2022-10-17 17:40:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 17:40:14,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:14,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729465879] [2022-10-17 17:40:14,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729465879] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:14,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:14,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 17:40:14,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020562740] [2022-10-17 17:40:14,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:14,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 17:40:14,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 17:40:14,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-17 17:40:14,151 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 5 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-10-17 17:40:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:17,596 INFO L93 Difference]: Finished difference Result 168 states and 200 transitions. [2022-10-17 17:40:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 17:40:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 5 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 78 [2022-10-17 17:40:17,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:17,599 INFO L225 Difference]: With dead ends: 168 [2022-10-17 17:40:17,600 INFO L226 Difference]: Without dead ends: 132 [2022-10-17 17:40:17,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-10-17 17:40:17,602 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 11 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:17,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1061 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-10-17 17:40:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-10-17 17:40:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2022-10-17 17:40:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 76 states have (on average 1.144736842105263) internal successors, (87), 78 states have internal predecessors, (87), 34 states have call successors, (34), 17 states have call predecessors, (34), 20 states have return successors, (38), 35 states have call predecessors, (38), 33 states have call successors, (38) [2022-10-17 17:40:17,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 159 transitions. [2022-10-17 17:40:17,630 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 159 transitions. Word has length 78 [2022-10-17 17:40:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:17,636 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 159 transitions. [2022-10-17 17:40:17,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 5 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-10-17 17:40:17,637 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 159 transitions. [2022-10-17 17:40:17,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-17 17:40:17,648 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:17,649 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:17,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:40:17,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:17,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:17,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1655179666, now seen corresponding path program 1 times [2022-10-17 17:40:17,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:17,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119264748] [2022-10-17 17:40:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:17,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:17,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:40:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184449794] [2022-10-17 17:40:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:17,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:17,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:17,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:17,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9390f3d-0d1d-46ae-acad-09c980035901/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process