./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI --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 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 --- 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-5e519f3 [2022-11-03 03:52:50,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:52:50,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:52:50,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:52:50,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:52:50,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:52:50,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:52:50,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:52:50,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:52:50,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:52:50,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:52:50,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:52:50,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:52:50,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:52:50,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:52:50,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:52:50,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:52:50,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:52:50,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:52:50,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:52:50,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:52:50,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:52:50,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:52:50,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:52:50,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:52:50,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:52:50,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:52:50,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:52:50,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:52:50,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:52:50,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:52:50,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:52:50,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:52:50,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:52:50,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:52:50,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:52:50,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:52:50,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:52:50,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:52:50,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:52:50,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:52:50,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:52:50,697 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:52:50,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:52:50,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:52:50,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:52:50,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:52:50,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:52:50,700 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:52:50,701 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:52:50,701 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:52:50,701 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:52:50,702 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:52:50,702 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:52:50,702 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:52:50,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:52:50,703 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:52:50,703 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:52:50,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:52:50,704 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:52:50,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:52:50,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:52:50,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:52:50,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:52:50,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:52:50,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:52:50,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:52:50,706 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:52:50,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:52:50,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:52:50,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:52:50,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:52:50,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:52:50,708 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:52:50,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:52:50,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:52:50,709 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:52:50,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:52:50,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:52:50,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:52:50,710 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_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 [2022-11-03 03:52:51,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:52:51,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:52:51,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:52:51,117 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:52:51,118 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:52:51,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2022-11-03 03:52:51,226 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/data/51c2981a3/5f3a480efef14ea4bccdb8634bd7769a/FLAGfa323e614 [2022-11-03 03:52:52,174 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:52:52,176 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2022-11-03 03:52:52,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/data/51c2981a3/5f3a480efef14ea4bccdb8634bd7769a/FLAGfa323e614 [2022-11-03 03:52:52,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/data/51c2981a3/5f3a480efef14ea4bccdb8634bd7769a [2022-11-03 03:52:52,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:52:52,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:52:52,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:52:52,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:52:52,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:52:52,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:52" (1/1) ... [2022-11-03 03:52:52,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2004ac61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:52, skipping insertion in model container [2022-11-03 03:52:52,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:52" (1/1) ... [2022-11-03 03:52:52,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:52:52,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:52:53,234 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_2de7f513-c28b-43f7-abb2-a29626ec9bf8/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2022-11-03 03:52:53,241 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_2de7f513-c28b-43f7-abb2-a29626ec9bf8/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2022-11-03 03:52:54,474 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,482 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,483 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,486 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,487 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,509 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,510 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,512 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,513 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,515 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,517 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,518 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:54,519 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,087 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 03:52:55,089 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 03:52:55,091 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 03:52:55,093 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 03:52:55,095 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 03:52:55,096 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 03:52:55,097 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 03:52:55,098 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 03:52:55,099 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 03:52:55,100 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 03:52:55,361 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 03:52:55,874 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,875 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,897 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,899 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,905 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,906 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,922 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,923 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,923 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,924 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,924 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,925 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,925 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:55,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:52:55,999 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:52:56,036 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_2de7f513-c28b-43f7-abb2-a29626ec9bf8/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2022-11-03 03:52:56,037 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_2de7f513-c28b-43f7-abb2-a29626ec9bf8/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2022-11-03 03:52:56,107 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,108 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,108 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,109 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,109 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,124 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,126 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,127 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,128 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,132 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,133 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,134 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,134 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,180 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 03:52:56,181 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 03:52:56,182 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 03:52:56,183 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 03:52:56,185 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 03:52:56,185 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 03:52:56,186 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 03:52:56,186 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 03:52:56,187 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 03:52:56,187 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 03:52:56,221 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 03:52:56,372 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,373 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,424 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,425 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,429 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,430 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,447 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,448 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,449 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,449 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,450 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,450 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,451 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:52:56,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:52:56,767 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:52:56,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56 WrapperNode [2022-11-03 03:52:56,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:52:56,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:52:56,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:52:56,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:52:56,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:56,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:57,064 INFO L138 Inliner]: procedures = 774, calls = 2441, calls flagged for inlining = 66, calls inlined = 9, statements flattened = 599 [2022-11-03 03:52:57,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:52:57,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:52:57,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:52:57,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:52:57,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:57,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:57,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:57,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:57,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:57,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:57,180 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:57,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:57,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:52:57,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:52:57,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:52:57,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:52:57,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:57,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:52:57,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:57,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:52:57,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:52:57,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-03 03:52:57,340 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2022-11-03 03:52:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2022-11-03 03:52:57,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:52:57,342 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-03 03:52:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-03 03:52:57,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 03:52:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 03:52:57,342 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-11-03 03:52:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-11-03 03:52:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:52:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:52:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:52:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:52:57,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:52:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 03:52:57,345 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 03:52:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-03 03:52:57,346 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-03 03:52:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:52:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-03 03:52:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-03 03:52:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:52:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-03 03:52:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-03 03:52:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:52:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-11-03 03:52:57,348 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-11-03 03:52:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:52:57,349 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-11-03 03:52:57,349 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-11-03 03:52:57,349 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:52:57,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:52:57,350 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-11-03 03:52:57,351 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-11-03 03:52:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:52:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2022-11-03 03:52:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2022-11-03 03:52:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-03 03:52:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-03 03:52:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-03 03:52:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-03 03:52:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2022-11-03 03:52:57,357 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2022-11-03 03:52:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:52:57,919 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:52:57,922 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:52:59,252 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:52:59,439 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:52:59,440 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:52:59,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:52:59 BoogieIcfgContainer [2022-11-03 03:52:59,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:52:59,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:52:59,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:52:59,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:52:59,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:52:52" (1/3) ... [2022-11-03 03:52:59,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a949a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:52:59, skipping insertion in model container [2022-11-03 03:52:59,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56" (2/3) ... [2022-11-03 03:52:59,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a949a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:52:59, skipping insertion in model container [2022-11-03 03:52:59,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:52:59" (3/3) ... [2022-11-03 03:52:59,454 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness.i [2022-11-03 03:52:59,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:52:59,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:52:59,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:52:59,612 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;@198c0e3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:52:59,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:52:59,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 64 states have internal predecessors, (71), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-03 03:52:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:52:59,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:59,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:59,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:59,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:59,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2033396556, now seen corresponding path program 1 times [2022-11-03 03:52:59,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:59,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240496164] [2022-11-03 03:52:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:59,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:00,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:00,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240496164] [2022-11-03 03:53:00,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240496164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:00,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:00,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103332817] [2022-11-03 03:53:00,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:00,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:00,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:00,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:00,503 INFO L87 Difference]: Start difference. First operand has 112 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 64 states have internal predecessors, (71), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:53:01,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:01,259 INFO L93 Difference]: Finished difference Result 164 states and 217 transitions. [2022-11-03 03:53:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:01,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-03 03:53:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:01,282 INFO L225 Difference]: With dead ends: 164 [2022-11-03 03:53:01,282 INFO L226 Difference]: Without dead ends: 125 [2022-11-03 03:53:01,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:01,295 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 7 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:01,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 245 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:53:01,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-03 03:53:01,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 120. [2022-11-03 03:53:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 67 states have internal predecessors, (74), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-03 03:53:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 153 transitions. [2022-11-03 03:53:01,365 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 153 transitions. Word has length 18 [2022-11-03 03:53:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:01,366 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 153 transitions. [2022-11-03 03:53:01,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:53:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 153 transitions. [2022-11-03 03:53:01,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 03:53:01,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:01,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:01,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:53:01,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:01,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1073144067, now seen corresponding path program 1 times [2022-11-03 03:53:01,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:01,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526455631] [2022-11-03 03:53:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:01,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:01,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:01,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526455631] [2022-11-03 03:53:01,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526455631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:01,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:01,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:01,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241291578] [2022-11-03 03:53:01,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:01,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:01,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:01,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:01,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:01,760 INFO L87 Difference]: Start difference. First operand 120 states and 153 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:53:02,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:02,063 INFO L93 Difference]: Finished difference Result 161 states and 202 transitions. [2022-11-03 03:53:02,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:02,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-11-03 03:53:02,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:02,068 INFO L225 Difference]: With dead ends: 161 [2022-11-03 03:53:02,068 INFO L226 Difference]: Without dead ends: 128 [2022-11-03 03:53:02,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:02,070 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 2 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:02,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 239 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:02,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-03 03:53:02,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-11-03 03:53:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 70 states have internal predecessors, (77), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 03:53:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 163 transitions. [2022-11-03 03:53:02,110 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 163 transitions. Word has length 19 [2022-11-03 03:53:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:02,110 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 163 transitions. [2022-11-03 03:53:02,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:53:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 163 transitions. [2022-11-03 03:53:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 03:53:02,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:02,117 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2022-11-03 03:53:02,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:53:02,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:02,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:02,119 INFO L85 PathProgramCache]: Analyzing trace with hash -19964286, now seen corresponding path program 1 times [2022-11-03 03:53:02,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:02,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064272175] [2022-11-03 03:53:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:02,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:02,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:53:02,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88916130] [2022-11-03 03:53:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:02,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:02,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:02,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:02,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:53:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:03,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:53:03,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 03:53:03,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:03,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:03,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064272175] [2022-11-03 03:53:03,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:53:03,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88916130] [2022-11-03 03:53:03,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88916130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:03,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:03,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:53:03,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528098290] [2022-11-03 03:53:03,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:03,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:03,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:03,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:03,167 INFO L87 Difference]: Start difference. First operand 128 states and 163 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:53:04,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:05,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:07,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:08,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:09,236 INFO L93 Difference]: Finished difference Result 255 states and 331 transitions. [2022-11-03 03:53:09,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:53:09,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 96 [2022-11-03 03:53:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:09,242 INFO L225 Difference]: With dead ends: 255 [2022-11-03 03:53:09,247 INFO L226 Difference]: Without dead ends: 132 [2022-11-03 03:53:09,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:09,255 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 1 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:09,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 463 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-03 03:53:09,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-03 03:53:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-03 03:53:09,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 73 states have internal predecessors, (80), 44 states have call successors, (44), 16 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-11-03 03:53:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 167 transitions. [2022-11-03 03:53:09,277 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 167 transitions. Word has length 96 [2022-11-03 03:53:09,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:09,277 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 167 transitions. [2022-11-03 03:53:09,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:53:09,278 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 167 transitions. [2022-11-03 03:53:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 03:53:09,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:09,286 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2022-11-03 03:53:09,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:09,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:09,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:09,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:09,487 INFO L85 PathProgramCache]: Analyzing trace with hash -882981322, now seen corresponding path program 1 times [2022-11-03 03:53:09,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:09,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910264584] [2022-11-03 03:53:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:09,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 03:53:12,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:12,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910264584] [2022-11-03 03:53:12,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910264584] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:12,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890746122] [2022-11-03 03:53:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:12,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:12,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:12,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:12,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:53:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:13,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-03 03:53:13,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:13,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:53:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:53:13,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:13,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890746122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:13,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:53:13,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2022-11-03 03:53:13,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067945038] [2022-11-03 03:53:13,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:13,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:53:13,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:53:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:53:13,999 INFO L87 Difference]: Start difference. First operand 132 states and 167 transitions. Second operand has 11 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-03 03:53:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:15,481 INFO L93 Difference]: Finished difference Result 254 states and 317 transitions. [2022-11-03 03:53:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:53:15,483 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 103 [2022-11-03 03:53:15,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:15,488 INFO L225 Difference]: With dead ends: 254 [2022-11-03 03:53:15,489 INFO L226 Difference]: Without dead ends: 134 [2022-11-03 03:53:15,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:53:15,494 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 13 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:15,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 899 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 173 Invalid, 0 Unknown, 105 Unchecked, 1.4s Time] [2022-11-03 03:53:15,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-03 03:53:15,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-03 03:53:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 74 states have internal predecessors, (82), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-11-03 03:53:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 169 transitions. [2022-11-03 03:53:15,545 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 169 transitions. Word has length 103 [2022-11-03 03:53:15,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:15,546 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 169 transitions. [2022-11-03 03:53:15,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-03 03:53:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 169 transitions. [2022-11-03 03:53:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:53:15,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:15,557 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:15,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:15,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:15,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:15,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1169025982, now seen corresponding path program 1 times [2022-11-03 03:53:15,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:15,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353781790] [2022-11-03 03:53:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:15,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 03:53:17,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:17,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353781790] [2022-11-03 03:53:17,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353781790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:17,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191993468] [2022-11-03 03:53:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:17,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:17,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:17,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:17,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:53:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:18,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 03:53:18,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:18,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:53:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:53:19,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:19,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191993468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:19,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:53:19,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 20 [2022-11-03 03:53:19,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20085229] [2022-11-03 03:53:19,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:19,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:53:19,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:19,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:53:19,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:53:19,005 INFO L87 Difference]: Start difference. First operand 134 states and 169 transitions. Second operand has 14 states, 10 states have (on average 5.7) internal successors, (57), 11 states have internal predecessors, (57), 6 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-03 03:53:23,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:23,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:23,830 INFO L93 Difference]: Finished difference Result 260 states and 324 transitions. [2022-11-03 03:53:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:53:23,831 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 5.7) internal successors, (57), 11 states have internal predecessors, (57), 6 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 109 [2022-11-03 03:53:23,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:23,834 INFO L225 Difference]: With dead ends: 260 [2022-11-03 03:53:23,834 INFO L226 Difference]: Without dead ends: 137 [2022-11-03 03:53:23,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:53:23,836 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 16 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:23,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 905 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 1 Unknown, 123 Unchecked, 4.8s Time] [2022-11-03 03:53:23,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-03 03:53:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-11-03 03:53:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 74 states have (on average 1.135135135135135) internal successors, (84), 76 states have internal predecessors, (84), 45 states have call successors, (45), 18 states have call predecessors, (45), 17 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-11-03 03:53:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 173 transitions. [2022-11-03 03:53:23,857 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 173 transitions. Word has length 109 [2022-11-03 03:53:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:23,858 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 173 transitions. [2022-11-03 03:53:23,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 5.7) internal successors, (57), 11 states have internal predecessors, (57), 6 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-03 03:53:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 173 transitions. [2022-11-03 03:53:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 03:53:23,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:23,862 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2022-11-03 03:53:23,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:24,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:24,083 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:24,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:24,083 INFO L85 PathProgramCache]: Analyzing trace with hash 448761474, now seen corresponding path program 1 times [2022-11-03 03:53:24,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:24,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722625998] [2022-11-03 03:53:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:24,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 03:53:26,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:26,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722625998] [2022-11-03 03:53:26,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722625998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:26,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740653132] [2022-11-03 03:53:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:26,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:26,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:26,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:26,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:53:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:26,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 2453 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-03 03:53:26,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:26,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:53:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:53:27,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:27,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740653132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:27,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:53:27,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2022-11-03 03:53:27,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919022172] [2022-11-03 03:53:27,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:27,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:53:27,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:53:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:53:27,572 INFO L87 Difference]: Start difference. First operand 137 states and 173 transitions. Second operand has 11 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-03 03:53:29,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:30,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:30,416 INFO L93 Difference]: Finished difference Result 232 states and 287 transitions. [2022-11-03 03:53:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:53:30,417 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 104 [2022-11-03 03:53:30,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:30,419 INFO L225 Difference]: With dead ends: 232 [2022-11-03 03:53:30,419 INFO L226 Difference]: Without dead ends: 139 [2022-11-03 03:53:30,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:53:30,421 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 11 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:30,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 693 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 58 Unchecked, 2.8s Time] [2022-11-03 03:53:30,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-03 03:53:30,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-11-03 03:53:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 76 states have (on average 1.131578947368421) internal successors, (86), 77 states have internal predecessors, (86), 45 states have call successors, (45), 19 states have call predecessors, (45), 17 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-11-03 03:53:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 175 transitions. [2022-11-03 03:53:30,441 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 175 transitions. Word has length 104 [2022-11-03 03:53:30,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:30,442 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 175 transitions. [2022-11-03 03:53:30,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-03 03:53:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 175 transitions. [2022-11-03 03:53:30,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 03:53:30,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:30,445 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:30,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:30,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:30,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:30,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:30,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1568364534, now seen corresponding path program 1 times [2022-11-03 03:53:30,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:30,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222963789] [2022-11-03 03:53:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:30,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 03:53:32,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:32,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222963789] [2022-11-03 03:53:32,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222963789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:32,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748308829] [2022-11-03 03:53:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:32,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:32,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:32,062 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:32,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:53:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:32,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 03:53:32,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:33,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:53:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:53:33,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:33,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748308829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:33,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:53:33,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 20 [2022-11-03 03:53:33,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955940197] [2022-11-03 03:53:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:33,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:53:33,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:53:33,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:53:33,467 INFO L87 Difference]: Start difference. First operand 139 states and 175 transitions. Second operand has 14 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 6 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-03 03:53:35,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:37,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:40,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:42,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:42,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:42,759 INFO L93 Difference]: Finished difference Result 242 states and 298 transitions. [2022-11-03 03:53:42,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:53:42,760 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 6 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 110 [2022-11-03 03:53:42,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:42,761 INFO L225 Difference]: With dead ends: 242 [2022-11-03 03:53:42,761 INFO L226 Difference]: Without dead ends: 146 [2022-11-03 03:53:42,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:53:42,763 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 18 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:42,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1053 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 3 Unknown, 200 Unchecked, 9.2s Time] [2022-11-03 03:53:42,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-03 03:53:42,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-11-03 03:53:42,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 80 states have (on average 1.125) internal successors, (90), 82 states have internal predecessors, (90), 47 states have call successors, (47), 20 states have call predecessors, (47), 18 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) [2022-11-03 03:53:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 183 transitions. [2022-11-03 03:53:42,782 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 183 transitions. Word has length 110 [2022-11-03 03:53:42,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:42,783 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 183 transitions. [2022-11-03 03:53:42,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 6 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-03 03:53:42,783 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 183 transitions. [2022-11-03 03:53:42,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 03:53:42,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:42,786 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:42,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:43,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:43,011 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:43,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:43,011 INFO L85 PathProgramCache]: Analyzing trace with hash -481514599, now seen corresponding path program 1 times [2022-11-03 03:53:43,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:43,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229740278] [2022-11-03 03:53:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:43,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 03:54:02,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:02,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229740278] [2022-11-03 03:54:02,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229740278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:02,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277634743] [2022-11-03 03:54:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:02,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:02,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:02,575 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:02,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:54:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:03,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:54:03,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:54:03,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:03,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277634743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:03,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:54:03,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [33] total 36 [2022-11-03 03:54:03,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064299101] [2022-11-03 03:54:03,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:03,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:54:03,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:03,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:54:03,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1143, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:54:03,492 INFO L87 Difference]: Start difference. First operand 146 states and 183 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 03:54:05,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:05,681 INFO L93 Difference]: Finished difference Result 291 states and 367 transitions. [2022-11-03 03:54:05,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:54:05,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 113 [2022-11-03 03:54:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:05,684 INFO L225 Difference]: With dead ends: 291 [2022-11-03 03:54:05,684 INFO L226 Difference]: Without dead ends: 148 [2022-11-03 03:54:05,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=117, Invalid=1143, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:54:05,686 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:05,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 421 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 03:54:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-03 03:54:05,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-11-03 03:54:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 81 states have (on average 1.123456790123457) internal successors, (91), 84 states have internal predecessors, (91), 47 states have call successors, (47), 20 states have call predecessors, (47), 19 states have return successors, (47), 44 states have call predecessors, (47), 45 states have call successors, (47) [2022-11-03 03:54:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2022-11-03 03:54:05,703 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 113 [2022-11-03 03:54:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:05,704 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2022-11-03 03:54:05,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 03:54:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2022-11-03 03:54:05,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 03:54:05,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:05,706 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:05,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:05,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:05,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:05,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:05,919 INFO L85 PathProgramCache]: Analyzing trace with hash 233793495, now seen corresponding path program 1 times [2022-11-03 03:54:05,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:05,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903350254] [2022-11-03 03:54:05,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:05,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:06,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:54:06,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159693139] [2022-11-03 03:54:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:06,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:06,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:06,049 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:06,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de7f513-c28b-43f7-abb2-a29626ec9bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:54:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:06,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 2606 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-03 03:54:06,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:06,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-03 03:54:07,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:54:07,620 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2022-11-03 03:54:07,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-03 03:54:07,633 INFO L390 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 9 treesize of output 7 [2022-11-03 03:54:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:54:08,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:08,699 INFO L390 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 10 treesize of output 6 [2022-11-03 03:54:08,929 INFO L390 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 34 [2022-11-03 03:54:12,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:12,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903350254] [2022-11-03 03:54:12,200 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:54:12,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159693139] [2022-11-03 03:54:12,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159693139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:12,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1152518518] [2022-11-03 03:54:12,244 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2022-11-03 03:54:12,245 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:54:12,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:54:12,278 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:54:12,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:54:15,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:15,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:15,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:15,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:17,090 INFO L244 Elim1Store]: Index analysis took 1729 ms [2022-11-03 03:57:53,737 WARN L234 SmtUtils]: Spent 3.61m on a formula simplification. DAG size of input: 3759 DAG size of output: 1780 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 03:57:53,748 INFO L356 Elim1Store]: treesize reduction 11453, result has 23.7 percent of original size [2022-11-03 03:57:53,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19314 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 199 case distinctions, treesize of input 1001 treesize of output 4153 [2022-11-03 03:57:59,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:05,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:10,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:10,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:19,798 INFO L244 Elim1Store]: Index analysis took 21227 ms [2022-11-03 04:05:25,862 WARN L234 SmtUtils]: Spent 7.10m on a formula simplification. DAG size of input: 5146 DAG size of output: 2365 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 04:05:25,868 INFO L356 Elim1Store]: treesize reduction 17193, result has 19.4 percent of original size [2022-11-03 04:05:25,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 202 select indices, 202 select index equivalence classes, 19511 disjoint index pairs (out of 20301 index pairs), introduced 202 new quantified variables, introduced 992 case distinctions, treesize of input 1050 treesize of output 4777 [2022-11-03 04:06:24,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:06:24,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 04:06:24,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:06:24,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 04:06:25,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 04:06:25,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:06:25,053 INFO L390 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 15 treesize of output 1 [2022-11-03 04:06:25,058 INFO L390 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 15 treesize of output 1 [2022-11-03 04:06:25,065 INFO L390 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 15 treesize of output 1 [2022-11-03 04:06:25,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:06:25,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:06:25,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:06:25,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:06:25,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:06:25,306 INFO L390 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 [2022-11-03 04:06:25,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 04:06:25,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:06:25,366 INFO L390 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 15 treesize of output 1 [2022-11-03 04:06:25,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:06:25,380 INFO L390 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 15 treesize of output 1 [2022-11-03 04:06:25,388 INFO L390 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 15 treesize of output 1 [2022-11-03 04:06:25,406 INFO L390 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 7 treesize of output 3 [2022-11-03 04:06:25,424 INFO L390 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 7 treesize of output 3 [2022-11-03 04:06:25,445 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:06:25,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 04:06:25,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:06:25,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:06:25,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:06:25,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:06:25,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 04:06:25,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 04:06:25,626 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 04:06:25,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2022-11-03 04:06:25,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:06:25,701 INFO L356 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2022-11-03 04:06:25,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 60 [2022-11-03 04:06:25,733 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:06:25,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-03 04:06:25,792 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 04:06:25,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2022-11-03 04:06:25,836 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-03 04:06:25,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19