./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_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_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/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_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/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_c1d38c0f-faf8-48c8-8023-130ad70761f3/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 f57bc64edf303a057c8eafb48480d4e5b764bd411481261d53eb2a101eb82ae8 --- 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 03:33:42,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:33:42,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:33:42,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:33:42,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:33:42,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:33:42,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:33:42,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:33:42,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:33:42,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:33:42,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:33:42,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:33:42,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:33:42,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:33:42,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:33:42,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:33:42,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:33:42,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:33:42,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:33:42,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:33:42,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:33:42,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:33:42,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:33:42,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:33:42,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:33:42,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:33:42,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:33:42,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:33:42,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:33:42,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:33:42,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:33:42,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:33:42,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:33:42,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:33:42,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:33:42,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:33:42,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:33:42,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:33:42,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:33:42,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:33:42,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:33:42,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:33:42,804 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:33:42,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:33:42,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:33:42,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:33:42,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:33:42,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:33:42,808 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:33:42,808 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:33:42,809 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:33:42,809 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:33:42,810 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:33:42,811 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:33:42,811 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:33:42,812 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:33:42,812 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:33:42,812 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:33:42,813 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:33:42,813 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:33:42,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:33:42,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:33:42,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:33:42,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:33:42,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:33:42,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:33:42,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:33:42,819 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:33:42,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:33:42,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:33:42,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:33:42,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:33:42,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:33:42,821 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:33:42,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:33:42,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:33:42,822 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:33:42,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:33:42,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:33:42,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:33:42,823 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_c1d38c0f-faf8-48c8-8023-130ad70761f3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f57bc64edf303a057c8eafb48480d4e5b764bd411481261d53eb2a101eb82ae8 [2022-11-03 03:33:43,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:33:43,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:33:43,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:33:43,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:33:43,255 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:33:43,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i [2022-11-03 03:33:43,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/data/2f8f8b951/fa784d4e8e1b4b0799f74e2d95a56b5e/FLAG355c7bc39 [2022-11-03 03:33:44,500 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:33:44,501 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i [2022-11-03 03:33:44,542 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/data/2f8f8b951/fa784d4e8e1b4b0799f74e2d95a56b5e/FLAG355c7bc39 [2022-11-03 03:33:44,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/data/2f8f8b951/fa784d4e8e1b4b0799f74e2d95a56b5e [2022-11-03 03:33:44,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:33:44,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:33:44,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:33:44,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:33:44,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:33:44,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:33:44" (1/1) ... [2022-11-03 03:33:44,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dec2c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:44, skipping insertion in model container [2022-11-03 03:33:44,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:33:44" (1/1) ... [2022-11-03 03:33:44,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:33:44,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:33:45,423 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_c1d38c0f-faf8-48c8-8023-130ad70761f3/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2022-11-03 03:33:45,432 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_c1d38c0f-faf8-48c8-8023-130ad70761f3/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2022-11-03 03:33:46,778 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,779 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,780 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,781 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,782 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,797 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,798 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,800 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,801 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,803 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,805 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,806 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:46,806 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 03:33:47,300 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 03:33:47,301 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 03:33:47,302 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 03:33:47,304 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 03:33:47,305 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 03:33:47,306 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 03:33:47,307 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 03:33:47,308 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 03:33:47,309 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 03:33:47,487 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 03:33:47,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:33:47,534 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:33:47,549 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_c1d38c0f-faf8-48c8-8023-130ad70761f3/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2022-11-03 03:33:47,550 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_c1d38c0f-faf8-48c8-8023-130ad70761f3/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2022-11-03 03:33:47,645 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,656 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,656 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,657 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,660 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,680 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,683 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,685 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,686 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,692 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,693 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,694 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,694 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:33:47,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 03:33:47,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 03:33:47,775 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 03:33:47,777 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 03:33:47,778 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 03:33:47,779 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 03:33:47,780 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 03:33:47,781 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 03:33:47,782 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 03:33:47,782 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 03:33:47,811 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 03:33:47,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:33:48,096 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:33:48,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48 WrapperNode [2022-11-03 03:33:48,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:33:48,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:33:48,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:33:48,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:33:48,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (1/1) ... [2022-11-03 03:33:48,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (1/1) ... [2022-11-03 03:33:48,296 INFO L138 Inliner]: procedures = 679, calls = 1045, calls flagged for inlining = 50, calls inlined = 5, statements flattened = 134 [2022-11-03 03:33:48,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:33:48,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:33:48,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:33:48,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:33:48,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (1/1) ... [2022-11-03 03:33:48,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (1/1) ... [2022-11-03 03:33:48,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (1/1) ... [2022-11-03 03:33:48,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (1/1) ... [2022-11-03 03:33:48,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (1/1) ... [2022-11-03 03:33:48,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (1/1) ... [2022-11-03 03:33:48,398 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (1/1) ... [2022-11-03 03:33:48,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (1/1) ... [2022-11-03 03:33:48,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:33:48,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:33:48,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:33:48,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:33:48,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (1/1) ... [2022-11-03 03:33:48,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:33:48,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:48,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:33:48,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:33:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_back [2022-11-03 03:33:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_back [2022-11-03 03:33:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:33:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 03:33:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 03:33:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-11-03 03:33:48,548 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-11-03 03:33:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:33:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-11-03 03:33:48,549 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-11-03 03:33:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:33:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:33:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:33:48,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:33:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-11-03 03:33:48,551 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-11-03 03:33:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:33:48,551 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:33:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:33:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:33:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:33:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-03 03:33:48,554 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-03 03:33:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-11-03 03:33:48,555 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-11-03 03:33:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:33:48,954 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:33:48,957 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:33:49,306 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:33:49,515 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:33:49,515 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:33:49,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:33:49 BoogieIcfgContainer [2022-11-03 03:33:49,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:33:49,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:33:49,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:33:49,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:33:49,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:33:44" (1/3) ... [2022-11-03 03:33:49,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12edfc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:33:49, skipping insertion in model container [2022-11-03 03:33:49,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:48" (2/3) ... [2022-11-03 03:33:49,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12edfc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:33:49, skipping insertion in model container [2022-11-03 03:33:49,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:33:49" (3/3) ... [2022-11-03 03:33:49,534 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_back_harness.i [2022-11-03 03:33:49,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:33:49,565 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:33:49,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:33:49,639 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;@30697f94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:33:49,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:33:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-03 03:33:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 03:33:49,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:49,658 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-03 03:33:49,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash -208090152, now seen corresponding path program 1 times [2022-11-03 03:33:49,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:49,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535253039] [2022-11-03 03:33:49,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:49,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 03:33:50,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:50,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535253039] [2022-11-03 03:33:50,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535253039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:33:50,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631061884] [2022-11-03 03:33:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:50,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:50,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:50,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:33:50,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:33:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:51,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-03 03:33:51,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:33:51,546 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 18 treesize of output 19 [2022-11-03 03:33:51,565 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 18 treesize of output 19 [2022-11-03 03:33:51,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:51,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:51,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:51,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2022-11-03 03:33:51,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:51,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:51,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:51,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2022-11-03 03:33:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:33:54,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:33:54,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631061884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:54,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:33:54,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2022-11-03 03:33:54,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986564708] [2022-11-03 03:33:54,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:54,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:33:54,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:54,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:33:54,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:33:54,534 INFO L87 Difference]: Start difference. First operand has 69 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 03:33:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:54,992 INFO L93 Difference]: Finished difference Result 153 states and 216 transitions. [2022-11-03 03:33:54,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:33:54,996 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 52 [2022-11-03 03:33:54,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:55,008 INFO L225 Difference]: With dead ends: 153 [2022-11-03 03:33:55,009 INFO L226 Difference]: Without dead ends: 93 [2022-11-03 03:33:55,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:33:55,017 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 12 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:55,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 266 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 44 Unchecked, 0.2s Time] [2022-11-03 03:33:55,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-03 03:33:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82. [2022-11-03 03:33:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 43 states have internal predecessors, (50), 29 states have call successors, (29), 12 states have call predecessors, (29), 10 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-03 03:33:55,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions. [2022-11-03 03:33:55,084 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 52 [2022-11-03 03:33:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:55,086 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions. [2022-11-03 03:33:55,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 03:33:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions. [2022-11-03 03:33:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 03:33:55,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:55,090 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-03 03:33:55,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:33:55,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 03:33:55,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:55,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:55,306 INFO L85 PathProgramCache]: Analyzing trace with hash 575190234, now seen corresponding path program 1 times [2022-11-03 03:33:55,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:55,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610449954] [2022-11-03 03:33:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:55,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 03:33:55,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:55,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610449954] [2022-11-03 03:33:55,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610449954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:33:55,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170734966] [2022-11-03 03:33:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:55,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:55,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:55,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:33:55,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:33:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:56,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-03 03:33:56,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:33:56,106 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 03:33:56,308 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 18 treesize of output 19 [2022-11-03 03:33:56,347 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 18 treesize of output 19 [2022-11-03 03:33:56,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:56,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:56,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:33:56,461 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:33:56,462 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2022-11-03 03:33:56,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 03:33:56,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:56,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:56,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:33:56,552 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:33:56,552 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:33:56,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:56,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:56,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2022-11-03 03:33:56,605 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:33:56,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 03:33:56,764 INFO L356 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2022-11-03 03:33:56,766 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: |v_#memory_$Pointer$.base_73| input size 62 context size 62 output size 62 [2022-11-03 03:33:56,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [220562436] [2022-11-03 03:33:56,790 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2022-11-03 03:33:56,791 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:33:56,796 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:33:56,802 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:33:56,803 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:33:56,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:56,954 INFO L356 Elim1Store]: treesize reduction 40, result has 48.1 percent of original size [2022-11-03 03:33:56,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 62 [2022-11-03 03:33:56,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,083 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 03:33:57,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2022-11-03 03:33:57,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,571 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:33:57,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-03 03:33:57,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:33:57,712 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 24 treesize of output 9 [2022-11-03 03:33:57,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2022-11-03 03:33:57,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-03 03:33:57,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:33:57,944 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:33:57,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2022-11-03 03:33:57,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:57,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:33:58,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:33:58,038 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:33:58,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2022-11-03 03:33:58,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,191 INFO L356 Elim1Store]: treesize reduction 50, result has 47.9 percent of original size [2022-11-03 03:33:58,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 18 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 74 [2022-11-03 03:33:58,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,392 INFO L356 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-03 03:33:58,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2022-11-03 03:33:58,552 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 03:33:58,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:33:58,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 03:33:58,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2022-11-03 03:33:58,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2022-11-03 03:33:58,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2022-11-03 03:33:58,717 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 03:33:58,786 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 03:33:58,803 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 03:33:58,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:33:58,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 03:33:58,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2022-11-03 03:33:58,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2022-11-03 03:33:58,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2022-11-03 03:33:58,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:58,981 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 35 treesize of output 7 [2022-11-03 03:33:59,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:59,007 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 35 treesize of output 7 [2022-11-03 03:33:59,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:59,023 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 29 treesize of output 17 [2022-11-03 03:33:59,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:59,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:59,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-11-03 03:34:00,187 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_back with input of size 73 for LOIs [2022-11-03 03:34:00,629 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 44 for LOIs [2022-11-03 03:34:00,736 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 71 for LOIs [2022-11-03 03:34:01,084 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 62 for LOIs [2022-11-03 03:34:01,119 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 112 for LOIs [2022-11-03 03:34:01,151 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:34:07,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [220562436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:07,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:34:07,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [5] total 25 [2022-11-03 03:34:07,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844641411] [2022-11-03 03:34:07,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:07,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 03:34:07,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 03:34:07,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2022-11-03 03:34:07,504 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-03 03:34:07,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:07,982 INFO L93 Difference]: Finished difference Result 145 states and 186 transitions. [2022-11-03 03:34:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 03:34:07,985 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 53 [2022-11-03 03:34:07,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:07,987 INFO L225 Difference]: With dead ends: 145 [2022-11-03 03:34:07,987 INFO L226 Difference]: Without dead ends: 90 [2022-11-03 03:34:07,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2022-11-03 03:34:07,989 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 18 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:07,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 448 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 89 Invalid, 0 Unknown, 274 Unchecked, 0.4s Time] [2022-11-03 03:34:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-03 03:34:08,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2022-11-03 03:34:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 43 states have (on average 1.186046511627907) internal successors, (51), 44 states have internal predecessors, (51), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-03 03:34:08,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2022-11-03 03:34:08,053 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 53 [2022-11-03 03:34:08,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:08,054 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2022-11-03 03:34:08,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-03 03:34:08,055 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2022-11-03 03:34:08,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 03:34:08,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:08,061 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-03 03:34:08,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:34:08,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:08,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash -127929068, now seen corresponding path program 1 times [2022-11-03 03:34:08,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:08,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787116757] [2022-11-03 03:34:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:08,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 03:34:08,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:08,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787116757] [2022-11-03 03:34:08,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787116757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:08,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511399193] [2022-11-03 03:34:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:08,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:08,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:08,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:08,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:34:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:08,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:34:08,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:34:09,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:34:09,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511399193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:09,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:34:09,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-03 03:34:09,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137265383] [2022-11-03 03:34:09,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:09,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:34:09,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:34:09,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:34:09,030 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-03 03:34:09,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:09,357 INFO L93 Difference]: Finished difference Result 142 states and 183 transitions. [2022-11-03 03:34:09,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:34:09,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 54 [2022-11-03 03:34:09,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:09,361 INFO L225 Difference]: With dead ends: 142 [2022-11-03 03:34:09,361 INFO L226 Difference]: Without dead ends: 86 [2022-11-03 03:34:09,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:34:09,370 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 45 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:09,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 373 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:34:09,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-03 03:34:09,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-03 03:34:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 46 states have internal predecessors, (51), 28 states have call successors, (28), 13 states have call predecessors, (28), 13 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2022-11-03 03:34:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2022-11-03 03:34:09,418 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 54 [2022-11-03 03:34:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:09,419 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2022-11-03 03:34:09,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-03 03:34:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2022-11-03 03:34:09,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 03:34:09,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:09,423 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-03 03:34:09,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:34:09,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:09,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:09,635 INFO L85 PathProgramCache]: Analyzing trace with hash 655010460, now seen corresponding path program 1 times [2022-11-03 03:34:09,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:09,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376037683] [2022-11-03 03:34:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:09,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 03:34:09,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:09,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376037683] [2022-11-03 03:34:09,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376037683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:09,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952947255] [2022-11-03 03:34:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:09,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:09,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:09,964 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:09,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:34:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:10,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 03:34:10,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:34:10,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:34:10,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952947255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:10,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:34:10,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-11-03 03:34:10,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762254609] [2022-11-03 03:34:10,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:10,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:34:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:34:10,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:34:10,387 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-03 03:34:10,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:10,815 INFO L93 Difference]: Finished difference Result 153 states and 199 transitions. [2022-11-03 03:34:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:34:10,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 56 [2022-11-03 03:34:10,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:10,823 INFO L225 Difference]: With dead ends: 153 [2022-11-03 03:34:10,823 INFO L226 Difference]: Without dead ends: 94 [2022-11-03 03:34:10,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:34:10,829 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 72 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:10,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 417 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:34:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-03 03:34:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2022-11-03 03:34:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 28 states have call successors, (28), 13 states have call predecessors, (28), 13 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2022-11-03 03:34:10,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2022-11-03 03:34:10,877 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 56 [2022-11-03 03:34:10,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:10,878 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2022-11-03 03:34:10,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-03 03:34:10,878 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2022-11-03 03:34:10,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 03:34:10,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:10,883 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-03 03:34:10,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:34:11,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-03 03:34:11,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:11,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:11,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1658365247, now seen corresponding path program 1 times [2022-11-03 03:34:11,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:11,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849290905] [2022-11-03 03:34:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:11,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 03:34:11,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:11,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849290905] [2022-11-03 03:34:11,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849290905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:11,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579314921] [2022-11-03 03:34:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:11,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:11,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:11,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:11,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:34:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:11,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:34:11,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:34:11,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:34:11,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579314921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:11,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:34:11,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-03 03:34:11,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159712833] [2022-11-03 03:34:11,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:11,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:11,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:11,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:11,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:34:11,835 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:34:11,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:11,923 INFO L93 Difference]: Finished difference Result 149 states and 195 transitions. [2022-11-03 03:34:11,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:11,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 57 [2022-11-03 03:34:11,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:11,931 INFO L225 Difference]: With dead ends: 149 [2022-11-03 03:34:11,931 INFO L226 Difference]: Without dead ends: 93 [2022-11-03 03:34:11,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:34:11,933 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:11,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 147 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:34:11,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-03 03:34:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2022-11-03 03:34:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 28 states have call successors, (28), 13 states have call predecessors, (28), 13 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2022-11-03 03:34:11,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2022-11-03 03:34:11,987 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 57 [2022-11-03 03:34:11,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:11,988 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2022-11-03 03:34:11,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:34:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2022-11-03 03:34:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 03:34:11,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:11,990 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-03 03:34:12,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:34:12,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:12,218 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:12,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:12,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1568406847, now seen corresponding path program 1 times [2022-11-03 03:34:12,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:12,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165589363] [2022-11-03 03:34:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:12,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 03:34:12,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:12,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165589363] [2022-11-03 03:34:12,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165589363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:12,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44959550] [2022-11-03 03:34:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:12,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:12,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:12,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:12,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:34:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:12,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-03 03:34:12,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:13,030 INFO L356 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-11-03 03:34:13,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 78 [2022-11-03 03:34:13,054 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:34:13,054 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-03 03:34:13,064 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 10 treesize of output 9 [2022-11-03 03:34:13,075 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 16 treesize of output 15 [2022-11-03 03:34:13,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 21 [2022-11-03 03:34:13,140 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 21 treesize of output 13 [2022-11-03 03:34:44,208 WARN L234 SmtUtils]: Spent 23.84s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:34:51,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:34:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 03:34:56,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44959550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:34:56,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1961332756] [2022-11-03 03:34:56,153 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-11-03 03:34:56,153 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:34:56,154 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:34:56,154 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:34:56,154 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:34:56,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,274 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 03:34:56,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2022-11-03 03:34:56,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2022-11-03 03:34:56,681 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 24 treesize of output 9 [2022-11-03 03:34:56,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:34:56,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:34:56,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-03 03:34:56,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 99 [2022-11-03 03:34:56,931 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 35 treesize of output 7 [2022-11-03 03:34:56,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2022-11-03 03:34:56,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:56,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:57,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:57,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:57,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 101 [2022-11-03 03:34:57,804 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 134 for LOIs [2022-11-03 03:34:58,029 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 15 for LOIs [2022-11-03 03:34:58,032 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 112 for LOIs [2022-11-03 03:34:58,058 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:04,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1961332756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:04,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:35:04,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 15, 7] total 35 [2022-11-03 03:35:04,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140245209] [2022-11-03 03:35:04,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:04,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:35:04,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:04,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:35:04,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1032, Unknown=2, NotChecked=0, Total=1190 [2022-11-03 03:35:04,052 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand has 13 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 03:35:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:05,737 INFO L93 Difference]: Finished difference Result 152 states and 192 transitions. [2022-11-03 03:35:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:35:05,738 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 60 [2022-11-03 03:35:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:05,739 INFO L225 Difference]: With dead ends: 152 [2022-11-03 03:35:05,739 INFO L226 Difference]: Without dead ends: 81 [2022-11-03 03:35:05,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 136 SyntacticMatches, 15 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=156, Invalid=1032, Unknown=2, NotChecked=0, Total=1190 [2022-11-03 03:35:05,741 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 82 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:05,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 243 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 391 Invalid, 0 Unknown, 59 Unchecked, 1.6s Time] [2022-11-03 03:35:05,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-03 03:35:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2022-11-03 03:35:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 44 states have internal predecessors, (49), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2022-11-03 03:35:05,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2022-11-03 03:35:05,768 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 60 [2022-11-03 03:35:05,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:05,769 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2022-11-03 03:35:05,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 03:35:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2022-11-03 03:35:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 03:35:05,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:05,770 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-03 03:35:05,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:05,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:05,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:05,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:05,995 INFO L85 PathProgramCache]: Analyzing trace with hash 600033731, now seen corresponding path program 1 times [2022-11-03 03:35:05,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:05,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784382431] [2022-11-03 03:35:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:05,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 03:35:06,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:06,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784382431] [2022-11-03 03:35:06,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784382431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:06,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807477788] [2022-11-03 03:35:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:06,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:06,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:06,322 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:06,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:35:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:06,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-03 03:35:06,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:06,629 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 03:35:06,880 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 03:35:06,933 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:35:06,934 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 03:35:06,943 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 5 treesize of output 3 [2022-11-03 03:35:06,963 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:35:06,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 03:35:07,057 INFO L356 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2022-11-03 03:35:07,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: |v_#memory_$Pointer$.base_87| input size 50 context size 50 output size 50 [2022-11-03 03:35:07,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1527680798] [2022-11-03 03:35:07,061 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-11-03 03:35:07,061 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:07,061 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:07,061 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:07,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:07,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,185 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 03:35:07,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2022-11-03 03:35:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2022-11-03 03:35:07,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-03 03:35:07,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:35:07,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:35:07,667 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 24 treesize of output 9 [2022-11-03 03:35:07,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:07,778 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:35:07,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2022-11-03 03:35:07,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,914 INFO L356 Elim1Store]: treesize reduction 50, result has 47.9 percent of original size [2022-11-03 03:35:07,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 18 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 74 [2022-11-03 03:35:07,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:07,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:07,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:08,000 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:35:08,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2022-11-03 03:35:08,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,175 INFO L356 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-03 03:35:08,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2022-11-03 03:35:08,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2022-11-03 03:35:08,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-03 03:35:08,366 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 03:35:08,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:08,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 03:35:08,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2022-11-03 03:35:08,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2022-11-03 03:35:08,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2022-11-03 03:35:08,492 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 03:35:08,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-11-03 03:35:08,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,580 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 35 treesize of output 7 [2022-11-03 03:35:08,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,602 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 35 treesize of output 7 [2022-11-03 03:35:08,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:08,623 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 29 treesize of output 17 [2022-11-03 03:35:09,974 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_back with input of size 73 for LOIs [2022-11-03 03:35:10,615 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 44 for LOIs [2022-11-03 03:35:10,713 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 71 for LOIs [2022-11-03 03:35:11,355 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 62 for LOIs [2022-11-03 03:35:11,381 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 112 for LOIs [2022-11-03 03:35:11,412 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 25 for LOIs [2022-11-03 03:35:11,508 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:19,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1527680798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:19,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:35:19,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [6] total 33 [2022-11-03 03:35:19,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298496077] [2022-11-03 03:35:19,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:19,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 03:35:19,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:19,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 03:35:19,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 03:35:19,051 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 17 states have internal predecessors, (26), 9 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-03 03:35:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:20,767 INFO L93 Difference]: Finished difference Result 165 states and 199 transitions. [2022-11-03 03:35:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 03:35:20,768 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 20 states have (on average 1.3) internal successors, (26), 17 states have internal predecessors, (26), 9 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 61 [2022-11-03 03:35:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:20,769 INFO L225 Difference]: With dead ends: 165 [2022-11-03 03:35:20,770 INFO L226 Difference]: Without dead ends: 103 [2022-11-03 03:35:20,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=155, Invalid=1327, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 03:35:20,772 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 43 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:20,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 291 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 341 Invalid, 0 Unknown, 179 Unchecked, 1.0s Time] [2022-11-03 03:35:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-03 03:35:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2022-11-03 03:35:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 59 states have internal predecessors, (65), 26 states have call successors, (26), 15 states have call predecessors, (26), 16 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2022-11-03 03:35:20,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2022-11-03 03:35:20,804 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 61 [2022-11-03 03:35:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:20,804 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2022-11-03 03:35:20,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 20 states have (on average 1.3) internal successors, (26), 17 states have internal predecessors, (26), 9 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-03 03:35:20,805 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2022-11-03 03:35:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 03:35:20,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:20,806 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-03 03:35:20,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:21,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:21,011 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:21,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:21,011 INFO L85 PathProgramCache]: Analyzing trace with hash 147591051, now seen corresponding path program 1 times [2022-11-03 03:35:21,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:21,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539891336] [2022-11-03 03:35:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:21,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 03:35:22,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:22,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539891336] [2022-11-03 03:35:22,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539891336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:22,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500416394] [2022-11-03 03:35:22,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:22,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:22,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:22,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:22,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:35:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:22,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-03 03:35:22,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:22,704 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:35:22,705 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-03 03:35:22,725 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:35:22,726 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-03 03:35:37,161 WARN L234 SmtUtils]: Spent 8.40s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:35:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:38,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 03:35:43,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500416394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:35:43,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2125418731] [2022-11-03 03:35:43,344 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-03 03:35:43,344 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:43,345 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:43,345 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:43,345 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:43,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,466 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 03:35:43,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2022-11-03 03:35:43,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2022-11-03 03:35:43,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-03 03:35:43,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:35:43,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:35:43,918 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 24 treesize of output 9 [2022-11-03 03:35:43,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:43,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:44,021 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:35:44,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2022-11-03 03:35:44,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2022-11-03 03:35:44,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,258 INFO L356 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-03 03:35:44,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2022-11-03 03:35:44,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:44,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 99 [2022-11-03 03:35:44,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-03 03:35:44,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 23 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 54 [2022-11-03 03:35:44,449 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 03:35:44,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:44,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 03:35:44,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2022-11-03 03:35:44,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2022-11-03 03:35:44,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2022-11-03 03:35:44,596 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 03:35:44,642 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 03:35:44,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 03:35:44,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 13 [2022-11-03 03:35:44,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 23 [2022-11-03 03:35:44,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2022-11-03 03:35:44,753 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 03:35:44,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-11-03 03:35:44,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,820 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 35 treesize of output 7 [2022-11-03 03:35:44,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,856 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 35 treesize of output 7 [2022-11-03 03:35:44,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:44,875 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 29 treesize of output 17 [2022-11-03 03:35:45,598 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_back with input of size 73 for LOIs [2022-11-03 03:35:46,174 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 43 for LOIs [2022-11-03 03:35:46,260 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 71 for LOIs [2022-11-03 03:35:47,376 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 61 for LOIs [2022-11-03 03:35:47,400 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 112 for LOIs [2022-11-03 03:35:47,426 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-03 03:35:47,520 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:36:16,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2125418731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:16,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:36:16,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [10, 11, 6] total 50 [2022-11-03 03:36:16,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515246736] [2022-11-03 03:36:16,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:16,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 03:36:16,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:16,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 03:36:16,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2237, Unknown=11, NotChecked=0, Total=2450 [2022-11-03 03:36:16,385 INFO L87 Difference]: Start difference. First operand 100 states and 119 transitions. Second operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 18 states have internal predecessors, (28), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-03 03:36:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:20,151 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2022-11-03 03:36:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 03:36:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 18 states have internal predecessors, (28), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 63 [2022-11-03 03:36:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:20,153 INFO L225 Difference]: With dead ends: 180 [2022-11-03 03:36:20,153 INFO L226 Difference]: Without dead ends: 105 [2022-11-03 03:36:20,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=226, Invalid=2518, Unknown=12, NotChecked=0, Total=2756 [2022-11-03 03:36:20,155 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:20,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 661 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 338 Invalid, 0 Unknown, 318 Unchecked, 0.9s Time] [2022-11-03 03:36:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-03 03:36:20,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2022-11-03 03:36:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 59 states have (on average 1.152542372881356) internal successors, (68), 61 states have internal predecessors, (68), 27 states have call successors, (27), 16 states have call predecessors, (27), 17 states have return successors, (29), 26 states have call predecessors, (29), 26 states have call successors, (29) [2022-11-03 03:36:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2022-11-03 03:36:20,190 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 63 [2022-11-03 03:36:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:20,191 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2022-11-03 03:36:20,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 18 states have internal predecessors, (28), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-03 03:36:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2022-11-03 03:36:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 03:36:20,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:20,193 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-03 03:36:20,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:36:20,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:20,407 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:20,407 INFO L85 PathProgramCache]: Analyzing trace with hash -208497742, now seen corresponding path program 1 times [2022-11-03 03:36:20,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:20,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351980276] [2022-11-03 03:36:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:20,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 03:36:22,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:22,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351980276] [2022-11-03 03:36:22,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351980276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:22,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619975858] [2022-11-03 03:36:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:22,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:22,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:36:22,307 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:36:22,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 03:36:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:22,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-03 03:36:22,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:36:22,627 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 03:36:22,825 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:36:22,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 03:36:22,835 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 03:36:22,841 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:36:22,896 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 0 case distinctions, treesize of input 35 treesize of output 25 [2022-11-03 03:36:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:36:24,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:36:26,629 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_895 Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 16))))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24) v_ArrVal_895))) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|) (+ 16 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|)))) is different from false [2022-11-03 03:36:26,644 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:36:26,645 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 45 [2022-11-03 03:36:26,654 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:36:26,655 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-03 03:36:26,684 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:36:26,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 171 treesize of output 185 [2022-11-03 03:36:26,704 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:36:26,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 193 treesize of output 191 [2022-11-03 03:36:26,815 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 6 treesize of output 4 [2022-11-03 03:36:26,839 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:36:26,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 88 [2022-11-03 03:36:26,847 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 71 treesize of output 67 [2022-11-03 03:36:26,902 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:36:26,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 03:36:26,940 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:36:26,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 93 [2022-11-03 03:36:27,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619975858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:27,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [443181787] [2022-11-03 03:36:27,680 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-03 03:36:27,680 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:36:27,681 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:36:27,681 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:36:27,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:36:27,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:27,783 INFO L356 Elim1Store]: treesize reduction 40, result has 48.1 percent of original size [2022-11-03 03:36:27,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 62 [2022-11-03 03:36:27,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:27,888 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 03:36:27,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2022-11-03 03:36:28,238 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 24 treesize of output 9 [2022-11-03 03:36:28,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-03 03:36:28,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:36:28,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:36:28,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:28,455 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:36:28,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2022-11-03 03:36:28,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,601 INFO L356 Elim1Store]: treesize reduction 50, result has 47.9 percent of original size [2022-11-03 03:36:28,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 18 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 74 [2022-11-03 03:36:28,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-03 03:36:28,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2022-11-03 03:36:28,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:28,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:28,773 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:36:28,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2022-11-03 03:36:28,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,934 INFO L356 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-03 03:36:28,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2022-11-03 03:36:29,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:29,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:29,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 03:36:29,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:29,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2022-11-03 03:36:29,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:29,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2022-11-03 03:36:29,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:29,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2022-11-03 03:36:29,153 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 03:36:29,166 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 03:36:29,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:29,224 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 35 treesize of output 7 [2022-11-03 03:36:29,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:29,238 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 29 treesize of output 17 [2022-11-03 03:36:29,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:29,264 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 35 treesize of output 7 [2022-11-03 03:36:29,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:29,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:29,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-11-03 03:36:30,373 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_back with input of size 73 for LOIs [2022-11-03 03:36:31,386 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 107 for LOIs [2022-11-03 03:36:31,722 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 74 for LOIs [2022-11-03 03:36:31,762 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 111 for LOIs [2022-11-03 03:36:33,482 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 15 for LOIs [2022-11-03 03:36:33,484 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 112 for LOIs [2022-11-03 03:36:33,508 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-03 03:36:33,583 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:36:55,916 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5073#(and (<= 0 |__VERIFIER_assert_#in~cond|) (= (mod __VERIFIER_assert_~cond 256) 0) (exists ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_72| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_70| Int)) (and (= (+ 16 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_70|) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_72|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_70| 24))) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_72|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_70| 24)))) (<= 0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_70|) (<= 0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_72|) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_72|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_70| 24))) (<= |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_70| 0) (<= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_72|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_70| 24)) 0) (= |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_72| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_72|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_70| 24))) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_72|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_70| 24)))))) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (exists ((|v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29| Int)) (and (<= 0 (ite (= (ite (and (= 16 (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29|) 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29|) 0) |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29|)) 1 0) 0) 0 1)) (not (= (mod (ite (= |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29| 0) 0 1) 256) 0)) (not (= (mod (ite (= (ite (= 0 (mod (ite (= (ite (and (= 16 (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29|) 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29|) 0) |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29|)) 1 0) 0) 0 1) 256)) 1 0) 0) 0 1) 256) 0)) (<= 0 |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29|) (<= (ite (= (ite (and (= 16 (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29|) 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29|) 0) |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_29|)) 1 0) 0) 0 1) 1))) (= ~tl_last_error~0 0) (= |#NULL.offset| 0) (= 5 |~#s_can_fail_allocator_static~0.base|) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:36:55,917 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:36:55,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:36:55,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2022-11-03 03:36:55,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488479716] [2022-11-03 03:36:55,917 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:36:55,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 03:36:55,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:55,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 03:36:55,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=4434, Unknown=2, NotChecked=134, Total=4830 [2022-11-03 03:36:55,921 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 25 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 23 states have internal predecessors, (59), 10 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (23), 8 states have call predecessors, (23), 10 states have call successors, (23) [2022-11-03 03:36:56,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:56,817 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2022-11-03 03:36:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 03:36:56,817 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 23 states have internal predecessors, (59), 10 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (23), 8 states have call predecessors, (23), 10 states have call successors, (23) Word has length 64 [2022-11-03 03:36:56,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:56,819 INFO L225 Difference]: With dead ends: 192 [2022-11-03 03:36:56,819 INFO L226 Difference]: Without dead ends: 123 [2022-11-03 03:36:56,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 121 SyntacticMatches, 13 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=329, Invalid=5525, Unknown=2, NotChecked=150, Total=6006 [2022-11-03 03:36:56,823 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 15 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:56,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1170 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 207 Invalid, 0 Unknown, 268 Unchecked, 0.3s Time] [2022-11-03 03:36:56,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-03 03:36:56,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2022-11-03 03:36:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 69 states have internal predecessors, (79), 28 states have call successors, (28), 17 states have call predecessors, (28), 18 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-11-03 03:36:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2022-11-03 03:36:56,853 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 64 [2022-11-03 03:36:56,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:56,854 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2022-11-03 03:36:56,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 23 states have internal predecessors, (59), 10 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (23), 8 states have call predecessors, (23), 10 states have call successors, (23) [2022-11-03 03:36:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2022-11-03 03:36:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 03:36:56,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:56,855 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-03 03:36:56,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:36:57,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:57,057 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:57,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:57,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1243306032, now seen corresponding path program 1 times [2022-11-03 03:36:57,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:57,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046859200] [2022-11-03 03:36:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:57,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:57,365 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 03:36:57,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:57,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046859200] [2022-11-03 03:36:57,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046859200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:57,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678031882] [2022-11-03 03:36:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:57,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:57,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:36:57,371 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:36:57,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 03:36:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:57,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 03:36:57,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:36:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:36:57,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:36:57,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678031882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:57,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:36:57,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 13 [2022-11-03 03:36:57,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756430123] [2022-11-03 03:36:57,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:57,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:36:57,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:36:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:36:57,950 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 11 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-03 03:36:58,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:58,413 INFO L93 Difference]: Finished difference Result 193 states and 237 transitions. [2022-11-03 03:36:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:36:58,414 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 67 [2022-11-03 03:36:58,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:58,416 INFO L225 Difference]: With dead ends: 193 [2022-11-03 03:36:58,416 INFO L226 Difference]: Without dead ends: 119 [2022-11-03 03:36:58,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:36:58,418 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 17 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:58,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 493 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:36:58,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-03 03:36:58,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2022-11-03 03:36:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 66 states have internal predecessors, (76), 28 states have call successors, (28), 17 states have call predecessors, (28), 17 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2022-11-03 03:36:58,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 133 transitions. [2022-11-03 03:36:58,459 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 133 transitions. Word has length 67 [2022-11-03 03:36:58,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:58,460 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 133 transitions. [2022-11-03 03:36:58,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-03 03:36:58,461 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 133 transitions. [2022-11-03 03:36:58,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 03:36:58,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:58,466 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 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] [2022-11-03 03:36:58,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:36:58,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:58,686 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:58,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash -627453403, now seen corresponding path program 2 times [2022-11-03 03:36:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:58,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070950938] [2022-11-03 03:36:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:58,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-03 03:37:05,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:05,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070950938] [2022-11-03 03:37:05,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070950938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:37:05,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5654875] [2022-11-03 03:37:05,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:37:05,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:37:05,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:37:05,162 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:37:05,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 03:37:05,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-03 03:37:05,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:37:05,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-03 03:37:05,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:05,657 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-03 03:37:05,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-03 03:37:05,874 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 18 treesize of output 19 [2022-11-03 03:37:05,909 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 18 treesize of output 19 [2022-11-03 03:37:06,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,052 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 24 treesize of output 26 [2022-11-03 03:37:06,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,060 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 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-03 03:37:06,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,081 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-03 03:37:06,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,091 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 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-03 03:37:06,282 INFO L356 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2022-11-03 03:37:06,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: |v_#memory_$Pointer$.base_110| input size 61 context size 61 output size 61 [2022-11-03 03:37:06,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1169321796] [2022-11-03 03:37:06,287 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-03 03:37:06,294 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:37:06,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:37:06,295 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:37:06,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:37:06,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,396 INFO L356 Elim1Store]: treesize reduction 40, result has 48.1 percent of original size [2022-11-03 03:37:06,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 62 [2022-11-03 03:37:06,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,510 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 03:37:06,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2022-11-03 03:37:06,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-03 03:37:06,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:37:06,893 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 24 treesize of output 9 [2022-11-03 03:37:06,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:37:06,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:06,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,102 INFO L356 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-03 03:37:07,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2022-11-03 03:37:07,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-03 03:37:07,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 99 [2022-11-03 03:37:07,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2022-11-03 03:37:07,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 23 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 54 [2022-11-03 03:37:07,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:07,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 99 [2022-11-03 03:37:07,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:07,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:07,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:07,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:07,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:07,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:07,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:08,305 INFO L356 Elim1Store]: treesize reduction 227, result has 25.3 percent of original size [2022-11-03 03:37:08,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 698 treesize of output 707 [2022-11-03 03:37:08,861 INFO L356 Elim1Store]: treesize reduction 182, result has 18.0 percent of original size [2022-11-03 03:37:08,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 677 treesize of output 689 [2022-11-03 03:37:09,418 INFO L356 Elim1Store]: treesize reduction 246, result has 16.3 percent of original size [2022-11-03 03:37:09,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 16 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 680 treesize of output 699 [2022-11-03 03:37:09,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:09,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:09,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:09,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:09,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:09,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:09,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:09,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:09,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:10,000 INFO L356 Elim1Store]: treesize reduction 233, result has 26.3 percent of original size [2022-11-03 03:37:10,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 708 treesize of output 717 [2022-11-03 03:37:10,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:10,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2022-11-03 03:37:10,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:10,153 INFO L356 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-03 03:37:10,154 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 1 case distinctions, treesize of input 714 treesize of output 667 [2022-11-03 03:37:10,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:10,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:10,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 688 treesize of output 667 [2022-11-03 03:37:47,144 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 03:37:47,155 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 03:37:47,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:47,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:47,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 03:37:47,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:47,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2022-11-03 03:37:47,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:47,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2022-11-03 03:37:47,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:47,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2022-11-03 03:37:47,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:47,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:47,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-11-03 03:37:47,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:47,318 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 29 treesize of output 17 [2022-11-03 03:37:47,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:47,339 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 35 treesize of output 7 [2022-11-03 03:37:47,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:47,363 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 35 treesize of output 7 [2022-11-03 03:37:47,681 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_back with input of size 78 for LOIs [2022-11-03 03:37:48,661 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 101 for LOIs [2022-11-03 03:37:48,909 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 83 for LOIs [2022-11-03 03:37:48,973 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 78 for LOIs [2022-11-03 03:37:49,958 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2022-11-03 03:37:49,961 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 112 for LOIs [2022-11-03 03:37:49,988 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-03 03:37:50,062 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:38:10,871 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6300#(and (<= 0 |__VERIFIER_assert_#in~cond|) (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (= (mod __VERIFIER_assert_~cond 256) 0) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= ~tl_last_error~0 0) (exists ((|v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45| Int) (|v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45| Int)) (and (not (= (mod (ite (= 0 (+ |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45|)) 0 1) 256) 0)) (<= 0 |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45|) (<= (ite (= (ite (and (= (+ |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45| 16) (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45|)) (= |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45| (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45|))) 1 0) 0) 0 1) 1) (not (= (mod (ite (= (ite (= (mod (ite (= (ite (and (= (+ |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45| 16) (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45|)) (= |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45| (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45|))) 1 0) 0) 0 1) 256) 0) 1 0) 0) 0 1) 256) 0)) (<= 0 (ite (= (ite (and (= (+ |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45| 16) (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45|)) (= |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45| (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_45|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45|))) 1 0) 0) 0 1)) (<= 0 |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45|) (<= |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_45| 0))) (<= |#NULL.base| 0) (exists ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_39| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_39| Int)) (and (<= 0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_39|) (<= 0 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_39|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_39|)) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_39|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_39|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_39|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_39|) 8)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_39|) (<= 16 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_39|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_39|)) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_39|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_39|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_39|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_39|) 8)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_39|) (<= |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_39| 0) (<= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_39|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_39|) 16))) (<= 0 ~tl_last_error~0) (<= 0 |#NULL.offset|) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#StackHeapBarrier|) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2022-11-03 03:38:10,872 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:38:10,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:38:10,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-11-03 03:38:10,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862805553] [2022-11-03 03:38:10,872 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-03 03:38:10,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 03:38:10,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:10,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 03:38:10,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=3104, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 03:38:10,875 INFO L87 Difference]: Start difference. First operand 111 states and 133 transitions. Second operand has 20 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-03 03:38:14,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:14,378 INFO L93 Difference]: Finished difference Result 253 states and 359 transitions. [2022-11-03 03:38:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 03:38:14,378 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 70 [2022-11-03 03:38:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:14,382 INFO L225 Difference]: With dead ends: 253 [2022-11-03 03:38:14,382 INFO L226 Difference]: Without dead ends: 194 [2022-11-03 03:38:14,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=285, Invalid=4685, Unknown=0, NotChecked=0, Total=4970 [2022-11-03 03:38:14,386 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 140 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:14,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 950 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 03:38:14,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-03 03:38:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 155. [2022-11-03 03:38:14,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 91 states have internal predecessors, (103), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (59), 45 states have call predecessors, (59), 46 states have call successors, (59) [2022-11-03 03:38:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 209 transitions. [2022-11-03 03:38:14,457 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 209 transitions. Word has length 70 [2022-11-03 03:38:14,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:14,458 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 209 transitions. [2022-11-03 03:38:14,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-03 03:38:14,459 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 209 transitions. [2022-11-03 03:38:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 03:38:14,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:14,460 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 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] [2022-11-03 03:38:14,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:38:14,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:38:14,663 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:38:14,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:14,663 INFO L85 PathProgramCache]: Analyzing trace with hash 165035687, now seen corresponding path program 3 times [2022-11-03 03:38:14,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:14,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563895959] [2022-11-03 03:38:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-03 03:38:18,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:18,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563895959] [2022-11-03 03:38:18,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563895959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:38:18,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843752754] [2022-11-03 03:38:18,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 03:38:18,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:38:18,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:38:18,867 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:38:18,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 03:38:19,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 03:38:19,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:38:19,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-03 03:38:19,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:38:19,259 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 03:38:19,717 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 03:38:19,736 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:38:19,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 03:38:19,749 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 5 treesize of output 3 [2022-11-03 03:38:19,760 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 03:38:19,778 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:38:19,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 03:38:19,784 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 5 treesize of output 3 [2022-11-03 03:38:19,813 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 03:38:19,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 03:38:19,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:19,958 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:38:19,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 47 [2022-11-03 03:38:19,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:19,980 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 03:38:19,981 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 57 [2022-11-03 03:38:19,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:19,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,002 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 03:38:20,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-11-03 03:38:20,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,016 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-11-03 03:38:20,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-03 03:38:20,167 INFO L356 Elim1Store]: treesize reduction 116, result has 15.3 percent of original size [2022-11-03 03:38:20,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: |v_#memory_$Pointer$.base_118| input size 73 context size 73 output size 73 [2022-11-03 03:38:20,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [428483382] [2022-11-03 03:38:20,170 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-03 03:38:20,171 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:38:20,171 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:38:20,171 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:38:20,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:38:20,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,265 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 03:38:20,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2022-11-03 03:38:20,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2022-11-03 03:38:20,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:38:20,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-03 03:38:20,616 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 24 treesize of output 9 [2022-11-03 03:38:20,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:38:20,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,812 INFO L356 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-03 03:38:20,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2022-11-03 03:38:20,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-03 03:38:20,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 23 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 54 [2022-11-03 03:38:20,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2022-11-03 03:38:20,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 99 [2022-11-03 03:38:20,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:20,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 99 [2022-11-03 03:38:21,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:21,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:21,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:21,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:21,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:21,928 INFO L356 Elim1Store]: treesize reduction 227, result has 25.3 percent of original size [2022-11-03 03:38:21,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 694 treesize of output 703 [2022-11-03 03:38:21,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:22,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:22,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:22,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:22,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:22,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:22,530 INFO L356 Elim1Store]: treesize reduction 251, result has 26.2 percent of original size [2022-11-03 03:38:22,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 720 treesize of output 723 [2022-11-03 03:38:22,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2022-11-03 03:38:22,982 INFO L356 Elim1Store]: treesize reduction 182, result has 18.0 percent of original size [2022-11-03 03:38:22,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 675 treesize of output 687 [2022-11-03 03:38:23,452 INFO L356 Elim1Store]: treesize reduction 246, result has 16.3 percent of original size [2022-11-03 03:38:23,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 16 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 678 treesize of output 697 [2022-11-03 03:38:23,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:23,545 INFO L356 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-03 03:38:23,546 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 1 case distinctions, treesize of input 710 treesize of output 663 [2022-11-03 03:38:23,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:23,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:23,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 684 treesize of output 663 [2022-11-03 03:38:54,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:54,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:54,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 03:38:54,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:54,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2022-11-03 03:38:54,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:54,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2022-11-03 03:38:54,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:54,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2022-11-03 03:38:54,701 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 03:38:54,714 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 03:38:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:54,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:54,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-11-03 03:38:54,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:54,775 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 35 treesize of output 7 [2022-11-03 03:38:54,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:54,795 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 29 treesize of output 17 [2022-11-03 03:38:54,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:54,817 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 35 treesize of output 7 [2022-11-03 03:38:55,154 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_back with input of size 78 for LOIs [2022-11-03 03:38:56,179 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 101 for LOIs [2022-11-03 03:38:56,438 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 83 for LOIs [2022-11-03 03:38:56,494 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 78 for LOIs [2022-11-03 03:38:57,429 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2022-11-03 03:38:57,431 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 112 for LOIs [2022-11-03 03:38:57,450 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-03 03:38:57,526 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:39:19,054 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7028#(and (<= 0 |__VERIFIER_assert_#in~cond|) (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (= (mod __VERIFIER_assert_~cond 256) 0) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= ~tl_last_error~0 0) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (exists ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_46| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_46| Int)) (and (<= |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_46| 0) (<= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_46|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_46|) 16) (<= 0 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_46|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_46|)) (<= 16 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_46|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_46|)) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_46|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_46|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_46|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_46|) 8)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_46|) (<= 0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_46|) (= |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_46| (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_46|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_46|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_BEFORE_CALL_46|) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset_BEFORE_CALL_46|) 8))))) (<= 0 |#NULL.offset|) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#StackHeapBarrier|) (exists ((|v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61| Int) (v_aws_linked_list_back_~list.base_BEFORE_CALL_81 Int)) (and (not (= (mod (ite (= (+ v_aws_linked_list_back_~list.base_BEFORE_CALL_81 |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61|) 0) 0 1) 256) 0)) (<= |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61| 0) (<= 0 v_aws_linked_list_back_~list.base_BEFORE_CALL_81) (<= 0 |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61|) (not (= (mod (ite (= (ite (= (mod (ite (= (ite (and (= v_aws_linked_list_back_~list.base_BEFORE_CALL_81 (select (select |#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_81) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61|)) (= (select (select |#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_81) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61|) (+ |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61| 16))) 1 0) 0) 0 1) 256) 0) 1 0) 0) 0 1) 256) 0)) (<= (ite (= (ite (and (= v_aws_linked_list_back_~list.base_BEFORE_CALL_81 (select (select |#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_81) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61|)) (= (select (select |#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_81) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61|) (+ |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61| 16))) 1 0) 0) 0 1) 1) (<= 0 (ite (= (ite (and (= v_aws_linked_list_back_~list.base_BEFORE_CALL_81 (select (select |#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_81) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61|)) (= (select (select |#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_81) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61|) (+ |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_61| 16))) 1 0) 0) 0 1)))) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2022-11-03 03:39:19,054 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:39:19,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:39:19,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-03 03:39:19,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081746561] [2022-11-03 03:39:19,055 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-03 03:39:19,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:39:19,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:19,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:39:19,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2771, Unknown=0, NotChecked=0, Total=2970 [2022-11-03 03:39:19,056 INFO L87 Difference]: Start difference. First operand 155 states and 209 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 7 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-03 03:39:21,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:21,638 INFO L93 Difference]: Finished difference Result 298 states and 437 transitions. [2022-11-03 03:39:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:39:21,638 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 7 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) Word has length 71 [2022-11-03 03:39:21,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:21,641 INFO L225 Difference]: With dead ends: 298 [2022-11-03 03:39:21,641 INFO L226 Difference]: Without dead ends: 215 [2022-11-03 03:39:21,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=255, Invalid=3777, Unknown=0, NotChecked=0, Total=4032 [2022-11-03 03:39:21,644 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 111 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:21,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1079 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 03:39:21,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-03 03:39:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2022-11-03 03:39:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 101 states have internal predecessors, (113), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (77), 58 states have call predecessors, (77), 60 states have call successors, (77) [2022-11-03 03:39:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 251 transitions. [2022-11-03 03:39:21,722 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 251 transitions. Word has length 71 [2022-11-03 03:39:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:21,723 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 251 transitions. [2022-11-03 03:39:21,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 7 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-03 03:39:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 251 transitions. [2022-11-03 03:39:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 03:39:21,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:21,725 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 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] [2022-11-03 03:39:21,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:39:21,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:39:21,930 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:39:21,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:21,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1037606299, now seen corresponding path program 4 times [2022-11-03 03:39:21,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:21,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471857785] [2022-11-03 03:39:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:21,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-03 03:39:26,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:26,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471857785] [2022-11-03 03:39:26,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471857785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:39:26,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022322878] [2022-11-03 03:39:26,604 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 03:39:26,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:39:26,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:39:26,607 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:39:26,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 03:39:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:27,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-03 03:39:27,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:39:27,226 INFO L356 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-11-03 03:39:27,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 78 [2022-11-03 03:39:27,251 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:39:27,251 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 9 treesize of output 15 [2022-11-03 03:39:27,261 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 10 treesize of output 9 [2022-11-03 03:39:27,281 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 16 treesize of output 15 [2022-11-03 03:39:27,333 INFO L356 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-03 03:39:27,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 36 [2022-11-03 03:39:27,343 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 29 treesize of output 17 [2022-11-03 03:39:27,491 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) (= |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24)))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24))) (and (not (= .cse0 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse0) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse0 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse0)) (= (select v_DerPreprocessor_62 24) .cse0))) (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|))))) is different from true [2022-11-03 03:39:27,936 WARN L855 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) 24))) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) (not (= .cse0 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| v_DerPreprocessor_62) .cse0 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| v_DerPreprocessor_62) .cse0) (select |c_#memory_$Pointer$.base| .cse0)) (= .cse0 (select v_DerPreprocessor_62 24))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) 24) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) (= |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24)))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24))) (and (not (= .cse1 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse1) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse1 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse1)) (= (select v_DerPreprocessor_62 24) .cse1))) (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|)))))) is different from true [2022-11-03 03:39:29,348 WARN L855 $PredicateComparison]: unable to prove that (and (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_87 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_87) 24))) (and (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_87) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse0) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_87 v_DerPreprocessor_62) .cse0 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_87 v_DerPreprocessor_62) .cse0)) (= (select v_DerPreprocessor_62 24) .cse0))) (not (= .cse0 0))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_87 Int)) (and (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_87) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_87 (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_87) 24))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) 24))) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) (not (= .cse1 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| v_DerPreprocessor_62) .cse1 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| v_DerPreprocessor_62) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse1 (select v_DerPreprocessor_62 24))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) 24) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) (= |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24)))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24))) (and (not (= .cse2 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse2) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse2 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse2)) (= (select v_DerPreprocessor_62 24) .cse2))) (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|)))))) is different from true [2022-11-03 03:40:14,540 WARN L234 SmtUtils]: Spent 33.64s on a formula simplification that was a NOOP. DAG size: 137 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:18,599 WARN L855 $PredicateComparison]: unable to prove that (and (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_87 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_87) 24))) (and (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_87) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse0) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_87 v_DerPreprocessor_62) .cse0 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_87 v_DerPreprocessor_62) .cse0)) (= (select v_DerPreprocessor_62 24) .cse0))) (not (= .cse0 0))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_87 Int)) (and (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_87) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_87 (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_87) 24))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) 24))) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) (not (= .cse1 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| v_DerPreprocessor_62) .cse1 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| v_DerPreprocessor_62) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse1 (select v_DerPreprocessor_62 24))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) 24) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) (= |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24)))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24))) (and (not (= .cse2 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse2) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse2 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse2)) (= (select v_DerPreprocessor_62 24) .cse2))) (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|))))) (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| Int)) (and (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| Int)) (let ((.cse4 (+ 16 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse3 (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse6 (+ 8 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse5 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|))) (and (not (= (select .cse3 (+ |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 24)) 0)) (= (select .cse3 .cse4) 0) (= (select .cse5 .cse4) 0) (= (select .cse3 .cse6) 0) (= (select .cse5 .cse6) 0) (not (= (select .cse5 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|) 0))))) (not (= |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| 0)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| Int)) (and (not (= |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 0)) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| Int)) (let ((.cse8 (+ 16 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse7 (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse10 (+ 8 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse9 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|))) (and (not (= (select .cse7 (+ |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 24)) 0)) (= (select .cse7 .cse8) 0) (= (select .cse9 .cse8) 0) (= (select .cse7 .cse10) 0) (= (select .cse9 .cse10) 0) (not (= (select .cse9 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|) 0))))))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| Int)) (and (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| Int)) (let ((.cse13 (+ 16 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse11 (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse12 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse14 (+ 8 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|))) (and (not (= (select .cse11 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|) 0)) (not (= (select .cse12 (+ |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 24)) 0)) (= (select .cse11 .cse13) 0) (= (select .cse12 .cse13) 0) (= (select .cse11 .cse14) 0) (= (select .cse12 .cse14) 0)))) (not (= |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 0)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| Int)) (and (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| Int)) (let ((.cse17 (+ 16 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse16 (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse18 (+ 8 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse15 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|))) (and (not (= (select .cse15 (+ |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 24)) 0)) (= (select .cse16 .cse17) 0) (= (select .cse15 .cse17) 0) (= (select .cse16 .cse18) 0) (= (select .cse15 .cse18) 0) (not (= (select .cse15 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|) 0))))) (not (= |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| 0)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| Int)) (and (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| Int)) (let ((.cse20 (+ 16 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse19 (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse21 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse22 (+ 8 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|))) (and (not (= (select .cse19 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|) 0)) (not (= (select .cse19 (+ |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 24)) 0)) (= (select .cse19 .cse20) 0) (= (select .cse21 .cse20) 0) (= (select .cse19 .cse22) 0) (= (select .cse21 .cse22) 0)))) (not (= |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| 0)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| Int)) (and (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| Int)) (let ((.cse25 (+ 16 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse23 (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse24 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse26 (+ 8 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|))) (and (not (= (select .cse23 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|) 0)) (not (= (select .cse24 (+ |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 24)) 0)) (= (select .cse23 .cse25) 0) (= (select .cse24 .cse25) 0) (= (select .cse23 .cse26) 0) (= (select .cse24 .cse26) 0)))) (not (= |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| 0)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| Int)) (and (not (= |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 0)) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| Int)) (let ((.cse29 (+ 16 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse28 (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse30 (+ 8 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse27 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|))) (and (not (= (select .cse27 (+ |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 24)) 0)) (= (select .cse28 .cse29) 0) (= (select .cse27 .cse29) 0) (= (select .cse28 .cse30) 0) (= (select .cse27 .cse30) 0) (not (= (select .cse27 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|) 0))))))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| Int)) (and (not (= |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 0)) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38| Int)) (let ((.cse32 (+ 16 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|)) (.cse31 (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse33 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_38|)) (.cse34 (+ 8 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|))) (and (not (= (select .cse31 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38|) 0)) (not (= (select .cse31 (+ |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_38| 24)) 0)) (= (select .cse31 .cse32) 0) (= (select .cse33 .cse32) 0) (= (select .cse31 .cse34) 0) (= (select .cse33 .cse34) 0)))))))) is different from true [2022-11-03 03:40:28,158 WARN L855 $PredicateComparison]: unable to prove that (and (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_87 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_87) 24))) (and (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_87) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse0) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_87 v_DerPreprocessor_62) .cse0 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_87 v_DerPreprocessor_62) .cse0)) (= (select v_DerPreprocessor_62 24) .cse0))) (not (= .cse0 0))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_87 Int)) (and (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_87) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_87 (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_87) 24))))) (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_88 Int)) (let ((.cse2 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (let ((.cse3 (select .cse2 0)) (.cse1 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (and (= (select .cse1 8) 0) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_88 (select .cse2 24)) (= (select .cse2 16) 0) (= (select .cse2 8) 0) (not (= .cse3 0)) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_88) (= (select .cse1 16) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| .cse3) (select .cse1 0))))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_88 Int)) (let ((.cse4 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (let ((.cse6 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_88)) (.cse5 (select .cse4 0))) (and (= (select .cse4 8) 0) (not (= .cse5 0)) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_88 (select .cse6 24)) (= (select .cse6 16) 0) (= (select .cse6 8) 0) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_88) (= (select .cse4 16) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| (select .cse6 0)) .cse5)))))) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_aws_linked_list_back_~list.base_BEFORE_CALL_88 Int) (v_DerPreprocessor_61 (Array Int Int))) (let ((.cse9 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (let ((.cse8 (select .cse9 24)) (.cse10 (select .cse9 0)) (.cse7 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (and (= (select .cse7 8) 0) (= (select v_DerPreprocessor_62 24) .cse8) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse8 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_88 v_DerPreprocessor_62) .cse8 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_88 v_DerPreprocessor_62) .cse8) (select |c_#memory_$Pointer$.base| .cse8)) (= (select .cse9 16) 0) (= (select .cse9 8) 0) (not (= .cse10 0)) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_88) (= (select .cse7 16) 0) (not (= .cse8 0)) (= 16 (select (select |c_#memory_$Pointer$.offset| .cse10) (select .cse7 0))))))) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_aws_linked_list_back_~list.base_BEFORE_CALL_88 Int) (v_DerPreprocessor_61 (Array Int Int))) (let ((.cse11 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_88)) (.cse14 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (let ((.cse12 (select .cse14 24)) (.cse13 (select .cse11 0))) (and (= (select .cse11 8) 0) (= (select v_DerPreprocessor_62 24) .cse12) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse12 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_88 v_DerPreprocessor_62) .cse12 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_88 v_DerPreprocessor_62) .cse12) (select |c_#memory_$Pointer$.base| .cse12)) (not (= .cse13 0)) (= (select .cse14 16) 0) (= (select .cse14 8) 0) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_88) (= (select .cse11 16) 0) (not (= .cse12 0)) (= 16 (select (select |c_#memory_$Pointer$.offset| (select .cse14 0)) .cse13))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| Int)) (let ((.cse15 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) 24))) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) (not (= .cse15 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse15 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| v_DerPreprocessor_62) .cse15 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| v_DerPreprocessor_62) .cse15) (select |c_#memory_$Pointer$.base| .cse15)) (= .cse15 (select v_DerPreprocessor_62 24))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) 24) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) (= |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24)))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (let ((.cse16 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24))) (and (not (= .cse16 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse16) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse16 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse16 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse16)) (= (select v_DerPreprocessor_62 24) .cse16))) (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|))))) (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_89 Int)) (let ((.cse19 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_89))) (let ((.cse17 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_89)) (.cse18 (select .cse19 0))) (and (= (select .cse17 8) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| (select .cse17 0)) .cse18)) (= (select .cse19 16) 0) (= (select .cse19 8) 0) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_89 (select .cse17 24)) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_89) (= (select .cse17 16) 0) (not (= .cse18 0)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_89 Int)) (let ((.cse20 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_89))) (let ((.cse22 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_89)) (.cse21 (select .cse20 0))) (and (= (select .cse20 8) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| .cse21) (select .cse22 0))) (= (select .cse22 16) 0) (= (select .cse22 8) 0) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_89 (select .cse20 24)) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_89) (= (select .cse20 16) 0) (not (= .cse21 0)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_89 Int)) (let ((.cse23 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_89)) (.cse26 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_89))) (let ((.cse24 (select .cse26 0)) (.cse25 (select .cse23 24))) (and (= (select .cse23 8) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| (select .cse23 0)) .cse24)) (not (= .cse25 0)) (= (select .cse26 16) 0) (= (select .cse26 8) 0) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_89) (= (select .cse23 16) 0) (not (= .cse24 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse25) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse25 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_89 v_DerPreprocessor_62) .cse25 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_89 v_DerPreprocessor_62) .cse25)) (= (select v_DerPreprocessor_62 24) .cse25))))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_89 Int)) (let ((.cse27 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_89))) (let ((.cse29 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_89)) (.cse28 (select .cse27 0)) (.cse30 (select .cse27 24))) (and (= (select .cse27 8) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| .cse28) (select .cse29 0))) (not (= .cse30 0)) (= (select .cse29 16) 0) (= (select .cse29 8) 0) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_89) (= (select .cse27 16) 0) (not (= .cse28 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse30) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse30 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_89 v_DerPreprocessor_62) .cse30 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_89 v_DerPreprocessor_62) .cse30)) (= (select v_DerPreprocessor_62 24) .cse30))))))))) is different from true [2022-11-03 03:40:46,708 WARN L855 $PredicateComparison]: unable to prove that (and (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_87 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_87) 24))) (and (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_87) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse0) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_87 v_DerPreprocessor_62) .cse0 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_87 v_DerPreprocessor_62) .cse0)) (= (select v_DerPreprocessor_62 24) .cse0))) (not (= .cse0 0))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_87 Int)) (and (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_87) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_87 (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_87) 24))))) (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_90 Int)) (let ((.cse2 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_90))) (let ((.cse3 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_90)) (.cse1 (select .cse2 0))) (and (not (= .cse1 0)) (= (select .cse2 16) 0) (= (select .cse3 8) 0) (= (select .cse3 16) 0) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_90) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_90 (select .cse3 24)) (= 16 (select (select |c_#memory_$Pointer$.offset| (select .cse3 0)) .cse1)) (= (select .cse2 8) 0))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_90 Int)) (let ((.cse5 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_90)) (.cse6 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_90))) (let ((.cse7 (select .cse6 24)) (.cse4 (select .cse5 0))) (and (not (= .cse4 0)) (= (select .cse5 16) 0) (= (select .cse6 8) 0) (= (select .cse6 16) 0) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select v_DerPreprocessor_62 24) .cse7) (= (select |c_#memory_$Pointer$.base| .cse7) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse7 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_90 v_DerPreprocessor_62) .cse7 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_90 v_DerPreprocessor_62) .cse7)))) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_90) (not (= .cse7 0)) (= 16 (select (select |c_#memory_$Pointer$.offset| (select .cse6 0)) .cse4)) (= (select .cse5 8) 0))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_90 Int)) (let ((.cse9 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_90))) (let ((.cse10 (select .cse9 24)) (.cse8 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_90)) (.cse11 (select .cse9 0))) (and (= (select .cse8 16) 0) (= (select .cse9 8) 0) (= (select .cse9 16) 0) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select v_DerPreprocessor_62 24) .cse10) (= (select |c_#memory_$Pointer$.base| .cse10) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse10 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_90 v_DerPreprocessor_62) .cse10 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_90 v_DerPreprocessor_62) .cse10)))) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_90) (not (= .cse10 0)) (= 16 (select (select |c_#memory_$Pointer$.offset| .cse11) (select .cse8 0))) (= (select .cse8 8) 0) (not (= .cse11 0)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_90 Int)) (let ((.cse13 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_90))) (let ((.cse12 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_90)) (.cse14 (select .cse13 0))) (and (= (select .cse12 16) 0) (= (select .cse13 8) 0) (= (select .cse13 16) 0) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_90) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_90 (select .cse13 24)) (= 16 (select (select |c_#memory_$Pointer$.offset| .cse14) (select .cse12 0))) (= (select .cse12 8) 0) (not (= .cse14 0))))))) (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_88 Int)) (let ((.cse16 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (let ((.cse17 (select .cse16 0)) (.cse15 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (and (= (select .cse15 8) 0) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_88 (select .cse16 24)) (= (select .cse16 16) 0) (= (select .cse16 8) 0) (not (= .cse17 0)) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_88) (= (select .cse15 16) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| .cse17) (select .cse15 0))))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_88 Int)) (let ((.cse18 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (let ((.cse20 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_88)) (.cse19 (select .cse18 0))) (and (= (select .cse18 8) 0) (not (= .cse19 0)) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_88 (select .cse20 24)) (= (select .cse20 16) 0) (= (select .cse20 8) 0) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_88) (= (select .cse18 16) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| (select .cse20 0)) .cse19)))))) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_aws_linked_list_back_~list.base_BEFORE_CALL_88 Int) (v_DerPreprocessor_61 (Array Int Int))) (let ((.cse23 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (let ((.cse22 (select .cse23 24)) (.cse24 (select .cse23 0)) (.cse21 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (and (= (select .cse21 8) 0) (= (select v_DerPreprocessor_62 24) .cse22) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse22 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_88 v_DerPreprocessor_62) .cse22 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_88 v_DerPreprocessor_62) .cse22) (select |c_#memory_$Pointer$.base| .cse22)) (= (select .cse23 16) 0) (= (select .cse23 8) 0) (not (= .cse24 0)) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_88) (= (select .cse21 16) 0) (not (= .cse22 0)) (= 16 (select (select |c_#memory_$Pointer$.offset| .cse24) (select .cse21 0))))))) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_aws_linked_list_back_~list.base_BEFORE_CALL_88 Int) (v_DerPreprocessor_61 (Array Int Int))) (let ((.cse25 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_88)) (.cse28 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_88))) (let ((.cse26 (select .cse28 24)) (.cse27 (select .cse25 0))) (and (= (select .cse25 8) 0) (= (select v_DerPreprocessor_62 24) .cse26) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse26 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_88 v_DerPreprocessor_62) .cse26 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_88 v_DerPreprocessor_62) .cse26) (select |c_#memory_$Pointer$.base| .cse26)) (not (= .cse27 0)) (= (select .cse28 16) 0) (= (select .cse28 8) 0) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_88) (= (select .cse25 16) 0) (not (= .cse26 0)) (= 16 (select (select |c_#memory_$Pointer$.offset| (select .cse28 0)) .cse27))))))) (or (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int)) (v_aws_linked_list_back_~list.base_BEFORE_CALL_91 Int)) (let ((.cse32 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_91)) (.cse30 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_91))) (let ((.cse31 (select .cse30 0)) (.cse29 (select .cse32 24))) (and (= (select v_DerPreprocessor_62 24) .cse29) (= (select .cse30 8) 0) (not (= .cse31 0)) (= 0 (select .cse32 16)) (= (select .cse32 8) 0) (not (= 0 .cse29)) (= (select (select |c_#memory_$Pointer$.offset| (select .cse32 0)) .cse31) 16) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_91) (= (select .cse30 16) 0) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse29 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_91 v_DerPreprocessor_62) .cse29 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_91 v_DerPreprocessor_62) .cse29) (select |c_#memory_$Pointer$.base| .cse29)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_91 Int)) (let ((.cse33 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_91))) (let ((.cse34 (select .cse33 0)) (.cse35 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_91))) (and (= (select .cse33 8) 0) (not (= .cse34 0)) (= 0 (select .cse35 16)) (= (select .cse35 8) 0) (= (select (select |c_#memory_$Pointer$.offset| (select .cse35 0)) .cse34) 16) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_91 (select .cse35 24)) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_91) (= (select .cse33 16) 0))))) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int)) (v_aws_linked_list_back_~list.base_BEFORE_CALL_91 Int)) (let ((.cse38 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_91))) (let ((.cse39 (select .cse38 0)) (.cse37 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_91)) (.cse36 (select .cse38 24))) (and (= (select v_DerPreprocessor_62 24) .cse36) (= (select .cse37 8) 0) (= 0 (select .cse38 16)) (= (select .cse38 8) 0) (not (= 0 .cse36)) (= (select (select |c_#memory_$Pointer$.offset| .cse39) (select .cse37 0)) 16) (not (= .cse39 0)) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_91) (= (select .cse37 16) 0) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse36 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_91 v_DerPreprocessor_62) .cse36 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_91 v_DerPreprocessor_62) .cse36) (select |c_#memory_$Pointer$.base| .cse36)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_91 Int)) (let ((.cse41 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_91))) (let ((.cse42 (select .cse41 0)) (.cse40 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_91))) (and (= (select .cse40 8) 0) (= 0 (select .cse41 16)) (= (select .cse41 8) 0) (= (select (select |c_#memory_$Pointer$.offset| .cse42) (select .cse40 0)) 16) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_91 (select .cse41 24)) (not (= .cse42 0)) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_91) (= (select .cse40 16) 0)))))) (let ((.cse57 (= |c_aws_linked_list_is_valid_#in~list#1.offset| 0)) (.cse58 (= |c_aws_linked_list_is_valid_#in~list#1.base| 0)) (.cse46 (not |c_aws_linked_list_is_valid_#t~short305#1|))) (or (and (let ((.cse49 (select |c_#memory_$Pointer$.offset| |c_aws_linked_list_is_valid_#in~list#1.base|)) (.cse51 (select |c_#memory_$Pointer$.base| |c_aws_linked_list_is_valid_#in~list#1.base|)) (.cse56 (+ |c_aws_linked_list_is_valid_#in~list#1.offset| 8))) (let ((.cse53 (= (select .cse51 .cse56) 0)) (.cse43 (= (select .cse49 .cse56) 0)) (.cse54 (= (select .cse51 |c_aws_linked_list_is_valid_#in~list#1.offset|) 0)) (.cse55 (= (select .cse49 |c_aws_linked_list_is_valid_#in~list#1.offset|) 0))) (or (and .cse43 (let ((.cse52 (+ |c_aws_linked_list_is_valid_#in~list#1.offset| 24))) (let ((.cse45 (= (select .cse51 .cse52) 0)) (.cse44 (= (select .cse49 .cse52) 0))) (or (and .cse44 .cse45 .cse46) (and (let ((.cse50 (+ 16 |c_aws_linked_list_is_valid_#in~list#1.offset|))) (let ((.cse47 (= (select .cse51 .cse50) 0)) (.cse48 (= (select .cse49 .cse50) 0))) (or (and .cse47 .cse48 |c_aws_linked_list_is_valid_#t~short305#1|) (and (or (not .cse47) (not .cse48)) .cse46)))) (or (not .cse45) (not .cse44)))))) .cse53 (or (not .cse54) (not .cse55))) (and (or (not .cse53) (not .cse43) (and .cse54 .cse55)) .cse46)))) (or (not .cse57) (not .cse58))) (and .cse57 .cse58 .cse46))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| Int)) (let ((.cse59 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) 24))) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) (not (= .cse59 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse59 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| v_DerPreprocessor_62) .cse59 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| v_DerPreprocessor_62) .cse59) (select |c_#memory_$Pointer$.base| .cse59)) (= .cse59 (select v_DerPreprocessor_62 24))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|) 24) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_139|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) (= |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24)))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| Int)) (let ((.cse60 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|) 24))) (and (not (= .cse60 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse60) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse60 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse60 v_DerPreprocessor_61) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138| v_DerPreprocessor_62) .cse60)) (= (select v_DerPreprocessor_62 24) .cse60))) (<= 2 |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_138|))))) (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_89 Int)) (let ((.cse63 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_89))) (let ((.cse61 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_89)) (.cse62 (select .cse63 0))) (and (= (select .cse61 8) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| (select .cse61 0)) .cse62)) (= (select .cse63 16) 0) (= (select .cse63 8) 0) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_89 (select .cse61 24)) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_89) (= (select .cse61 16) 0) (not (= .cse62 0)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_89 Int)) (let ((.cse64 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_89))) (let ((.cse66 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_89)) (.cse65 (select .cse64 0))) (and (= (select .cse64 8) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| .cse65) (select .cse66 0))) (= (select .cse66 16) 0) (= (select .cse66 8) 0) (= v_aws_linked_list_back_~list.base_BEFORE_CALL_89 (select .cse64 24)) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_89) (= (select .cse64 16) 0) (not (= .cse65 0)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_89 Int)) (let ((.cse67 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_89)) (.cse70 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_89))) (let ((.cse68 (select .cse70 0)) (.cse69 (select .cse67 24))) (and (= (select .cse67 8) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| (select .cse67 0)) .cse68)) (not (= .cse69 0)) (= (select .cse70 16) 0) (= (select .cse70 8) 0) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_89) (= (select .cse67 16) 0) (not (= .cse68 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse69) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse69 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_89 v_DerPreprocessor_62) .cse69 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_89 v_DerPreprocessor_62) .cse69)) (= (select v_DerPreprocessor_62 24) .cse69))))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_89 Int)) (let ((.cse71 (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_89))) (let ((.cse73 (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_89)) (.cse72 (select .cse71 0)) (.cse74 (select .cse71 24))) (and (= (select .cse71 8) 0) (= 16 (select (select |c_#memory_$Pointer$.offset| .cse72) (select .cse73 0))) (not (= .cse74 0)) (= (select .cse73 16) 0) (= (select .cse73 8) 0) (<= 2 v_aws_linked_list_back_~list.base_BEFORE_CALL_89) (= (select .cse71 16) 0) (not (= .cse72 0)) (exists ((v_DerPreprocessor_62 (Array Int Int)) (v_DerPreprocessor_61 (Array Int Int))) (and (= (select |c_#memory_$Pointer$.base| .cse74) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse74 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_89 v_DerPreprocessor_62) .cse74 v_DerPreprocessor_61) v_aws_linked_list_back_~list.base_BEFORE_CALL_89 v_DerPreprocessor_62) .cse74)) (= (select v_DerPreprocessor_62 24) .cse74))))))))) is different from true [2022-11-03 03:40:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 26 not checked. [2022-11-03 03:40:52,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:41:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 03:41:01,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022322878] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:41:01,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1275876429] [2022-11-03 03:41:01,394 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-03 03:41:01,394 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:41:01,395 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:41:01,395 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:41:01,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:41:01,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,512 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 03:41:01,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2022-11-03 03:41:01,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2022-11-03 03:41:01,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-03 03:41:01,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:41:01,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:41:01,916 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 24 treesize of output 9 [2022-11-03 03:41:01,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:01,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,086 INFO L356 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-03 03:41:02,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2022-11-03 03:41:02,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 99 [2022-11-03 03:41:02,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 23 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 54 [2022-11-03 03:41:02,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-03 03:41:02,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2022-11-03 03:41:02,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:02,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 99 [2022-11-03 03:41:02,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:02,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:02,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:02,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:02,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:02,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:02,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:03,153 INFO L356 Elim1Store]: treesize reduction 227, result has 25.3 percent of original size [2022-11-03 03:41:03,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 698 treesize of output 707 [2022-11-03 03:41:03,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:03,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:03,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:03,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:03,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:03,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:03,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:03,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:03,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:03,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:03,819 INFO L356 Elim1Store]: treesize reduction 233, result has 26.3 percent of original size [2022-11-03 03:41:03,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 712 treesize of output 721 [2022-11-03 03:41:04,249 INFO L356 Elim1Store]: treesize reduction 182, result has 18.0 percent of original size [2022-11-03 03:41:04,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 679 treesize of output 691 [2022-11-03 03:41:04,792 INFO L356 Elim1Store]: treesize reduction 246, result has 16.3 percent of original size [2022-11-03 03:41:04,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 16 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 682 treesize of output 701 [2022-11-03 03:41:04,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:04,897 INFO L356 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-03 03:41:04,898 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 1 case distinctions, treesize of input 714 treesize of output 667 [2022-11-03 03:41:04,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:04,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:04,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 688 treesize of output 667 [2022-11-03 03:41:28,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:28,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2022-11-03 03:41:29,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:29,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 03:41:29,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:29,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 13 [2022-11-03 03:41:29,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:41:29,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:29,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 23 [2022-11-03 03:41:29,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:29,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2022-11-03 03:41:29,889 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 03:41:29,903 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 03:41:29,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:29,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:29,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-11-03 03:41:29,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:29,972 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 35 treesize of output 7 [2022-11-03 03:41:29,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:29,994 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 29 treesize of output 17 [2022-11-03 03:41:30,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:41:30,019 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 35 treesize of output 7 [2022-11-03 03:41:30,364 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_back with input of size 79 for LOIs [2022-11-03 03:41:31,373 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 103 for LOIs [2022-11-03 03:41:31,640 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 84 for LOIs [2022-11-03 03:41:31,698 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 79 for LOIs [2022-11-03 03:41:32,677 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2022-11-03 03:41:32,685 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 112 for LOIs [2022-11-03 03:41:32,708 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-03 03:41:32,773 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:42:09,930 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8289#(and (<= 0 |__VERIFIER_assert_#in~cond|) (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (= (mod __VERIFIER_assert_~cond 256) 0) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= ~tl_last_error~0 0) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (exists ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_115| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_117| Int)) (and (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_117|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_115| 24))) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_117|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_115| 24))) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_117|) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_117|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_115| 24))) (<= 0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_117|) (<= 0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_115|) (= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_115| 16) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_117|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_115| 24))) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_117|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_115| 24)))) (<= |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_115| 0) (<= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_117|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_115| 24)) 0))) (<= 0 |#NULL.offset|) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#StackHeapBarrier|) (exists ((|v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77| Int) (|v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77| Int)) (and (<= 0 (ite (= (ite (and (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77|) (+ |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77| 16)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77|) |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77|)) 1 0) 0) 0 1)) (<= 0 |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77|) (not (= (mod (ite (= (ite (= (mod (ite (= (ite (and (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77|) (+ |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77| 16)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77|) |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77|)) 1 0) 0) 0 1) 256) 0) 1 0) 0) 0 1) 256) 0)) (<= (ite (= (ite (and (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77|) (+ |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77| 16)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77|) |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77|) |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77|)) 1 0) 0) 0 1) 1) (<= 0 |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77|) (not (= (mod (ite (= (+ |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_77|) 0) 0 1) 256) 0)) (<= |v_aws_linked_list_back_#in~list.offset_BEFORE_CALL_77| 0))) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2022-11-03 03:42:09,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:42:09,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:42:09,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 30, 11] total 54 [2022-11-03 03:42:09,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126721503] [2022-11-03 03:42:09,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:42:09,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-03 03:42:09,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:09,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-03 03:42:09,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=6142, Unknown=177, NotChecked=990, Total=7656 [2022-11-03 03:42:09,935 INFO L87 Difference]: Start difference. First operand 179 states and 251 transitions. Second operand has 54 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 46 states have internal predecessors, (100), 23 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (36), 20 states have call predecessors, (36), 22 states have call successors, (36) [2022-11-03 03:42:23,418 WARN L234 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 322 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:42:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:36,900 INFO L93 Difference]: Finished difference Result 383 states and 550 transitions. [2022-11-03 03:42:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-03 03:42:36,901 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 46 states have internal predecessors, (100), 23 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (36), 20 states have call predecessors, (36), 22 states have call successors, (36) Word has length 72 [2022-11-03 03:42:36,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:36,905 INFO L225 Difference]: With dead ends: 383 [2022-11-03 03:42:36,905 INFO L226 Difference]: Without dead ends: 278 [2022-11-03 03:42:36,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 160 SyntacticMatches, 6 SemanticMatches, 110 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 134.0s TimeCoverageRelationStatistics Valid=560, Invalid=10383, Unknown=211, NotChecked=1278, Total=12432 [2022-11-03 03:42:36,911 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 78 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1401 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:36,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1959 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 617 Invalid, 0 Unknown, 1401 Unchecked, 1.3s Time] [2022-11-03 03:42:36,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-03 03:42:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 258. [2022-11-03 03:42:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 144 states have (on average 1.2152777777777777) internal successors, (175), 152 states have internal predecessors, (175), 80 states have call successors, (80), 28 states have call predecessors, (80), 33 states have return successors, (113), 77 states have call predecessors, (113), 79 states have call successors, (113) [2022-11-03 03:42:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 368 transitions. [2022-11-03 03:42:37,026 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 368 transitions. Word has length 72 [2022-11-03 03:42:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:37,027 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 368 transitions. [2022-11-03 03:42:37,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 46 states have internal predecessors, (100), 23 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (36), 20 states have call predecessors, (36), 22 states have call successors, (36) [2022-11-03 03:42:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 368 transitions. [2022-11-03 03:42:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 03:42:37,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:37,030 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 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] [2022-11-03 03:42:37,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:37,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 03:42:37,238 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:37,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:37,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1129456014, now seen corresponding path program 1 times [2022-11-03 03:42:37,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:37,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931632450] [2022-11-03 03:42:37,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:37,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-03 03:42:41,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:41,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931632450] [2022-11-03 03:42:41,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931632450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:42:41,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999277909] [2022-11-03 03:42:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:41,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:42:41,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:42:41,955 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:42:41,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 03:42:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:42,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 148 conjunts are in the unsatisfiable core [2022-11-03 03:42:42,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:42,430 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 03:42:42,997 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 03:42:43,020 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:42:43,021 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 03:42:43,034 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 5 treesize of output 3 [2022-11-03 03:42:43,041 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 03:42:43,064 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:42:43,065 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 03:42:43,073 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 5 treesize of output 3 [2022-11-03 03:42:43,089 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:42:43,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 03:42:43,249 INFO L356 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2022-11-03 03:42:43,249 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: |v_#memory_$Pointer$.base_135| input size 57 context size 57 output size 57 [2022-11-03 03:42:43,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [973418550] [2022-11-03 03:42:43,252 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-03 03:42:43,252 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:42:43,252 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:42:43,253 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:42:43,253 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:42:43,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,386 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 03:42:43,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2022-11-03 03:42:43,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2022-11-03 03:42:43,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-03 03:42:43,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:42:43,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2022-11-03 03:42:43,795 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 24 treesize of output 9 [2022-11-03 03:42:43,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:42:43,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:42:43,890 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:42:43,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2022-11-03 03:42:43,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-03 03:42:43,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:43,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:42:44,015 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:42:44,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2022-11-03 03:42:44,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,226 INFO L356 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-03 03:42:44,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2022-11-03 03:42:44,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 23 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 54 [2022-11-03 03:42:44,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2022-11-03 03:42:44,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:42:44,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 03:42:44,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2022-11-03 03:42:44,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2022-11-03 03:42:44,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2022-11-03 03:42:44,525 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 03:42:44,539 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 03:42:44,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,613 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 35 treesize of output 7 [2022-11-03 03:42:44,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,633 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 35 treesize of output 7 [2022-11-03 03:42:44,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,648 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 29 treesize of output 17 [2022-11-03 03:42:44,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:42:44,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-11-03 03:42:45,651 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_back with input of size 73 for LOIs [2022-11-03 03:42:47,172 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 107 for LOIs [2022-11-03 03:42:47,495 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 89 for LOIs [2022-11-03 03:42:47,612 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 111 for LOIs [2022-11-03 03:42:48,998 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 15 for LOIs [2022-11-03 03:42:49,001 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 112 for LOIs [2022-11-03 03:42:49,022 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-03 03:42:49,094 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:42:57,582 WARN L234 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 93 DAG size of output: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:27,408 WARN L234 SmtUtils]: Spent 12.50s on a formula simplification. DAG size of input: 89 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:40,258 WARN L234 SmtUtils]: Spent 12.50s on a formula simplification. DAG size of input: 91 DAG size of output: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:43:40,260 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9409#(and (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0) (= ~tl_last_error~0 0) (= |#NULL.offset| 0) (= 5 |~#s_can_fail_allocator_static~0.base|) (exists ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_132| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_130| Int)) (and (<= |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_130| 0) (<= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_132|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_130| 24)) 0) (<= 0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_132|) (<= 0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_130|) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_132|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_130| 24))) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_132|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_130| 24))) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_130| 16)) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_132|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_130| 24))) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_132|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_130| 24))) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_132|) (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_BEFORE_CALL_130| 24))) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_BEFORE_CALL_132|))) (<= 0 |#StackHeapBarrier|) (exists ((|v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93| Int)) (and (not (= (mod (ite (= (ite (= (mod (ite (= (ite (and (= 16 (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93|) 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93|) 0) |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93|)) 1 0) 0) 0 1) 256) 0) 1 0) 0) 0 1) 256) 0)) (<= 0 (ite (= (ite (and (= 16 (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93|) 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93|) 0) |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93|)) 1 0) 0) 0 1)) (not (= (mod (ite (= |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93| 0) 0 1) 256) 0)) (<= 0 |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93|) (<= (ite (= (ite (and (= 16 (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93|) 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93|) 0) |v_aws_linked_list_back_#in~list.base_BEFORE_CALL_93|)) 1 0) 0) 0 1) 1))) (= |#NULL.base| 0))' at error location [2022-11-03 03:43:40,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:43:40,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:40,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-11-03 03:43:40,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415167616] [2022-11-03 03:43:40,261 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-03 03:43:40,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 03:43:40,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:40,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 03:43:40,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2983, Unknown=0, NotChecked=0, Total=3192 [2022-11-03 03:43:40,263 INFO L87 Difference]: Start difference. First operand 258 states and 368 transitions. Second operand has 19 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 8 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-03 03:43:43,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:43,578 INFO L93 Difference]: Finished difference Result 381 states and 546 transitions. [2022-11-03 03:43:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:43:43,579 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 8 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) Word has length 78 [2022-11-03 03:43:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:43,585 INFO L225 Difference]: With dead ends: 381 [2022-11-03 03:43:43,585 INFO L226 Difference]: Without dead ends: 282 [2022-11-03 03:43:43,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 45 SyntacticMatches, 10 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 53.8s TimeCoverageRelationStatistics Valid=340, Invalid=5062, Unknown=0, NotChecked=0, Total=5402 [2022-11-03 03:43:43,593 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 99 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:43,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 651 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 03:43:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-03 03:43:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 270. [2022-11-03 03:43:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 154 states have (on average 1.1948051948051948) internal successors, (184), 162 states have internal predecessors, (184), 81 states have call successors, (81), 29 states have call predecessors, (81), 34 states have return successors, (114), 78 states have call predecessors, (114), 80 states have call successors, (114) [2022-11-03 03:43:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 379 transitions. [2022-11-03 03:43:43,736 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 379 transitions. Word has length 78 [2022-11-03 03:43:43,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:43,737 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 379 transitions. [2022-11-03 03:43:43,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 8 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-03 03:43:43,737 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 379 transitions. [2022-11-03 03:43:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 03:43:43,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:43,739 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 3, 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] [2022-11-03 03:43:43,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-03 03:43:43,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 03:43:43,956 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:43,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:43,956 INFO L85 PathProgramCache]: Analyzing trace with hash -566871083, now seen corresponding path program 1 times [2022-11-03 03:43:43,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:43,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386709503] [2022-11-03 03:43:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:43,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 03:43:44,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:44,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386709503] [2022-11-03 03:43:44,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386709503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:44,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:44,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:43:44,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087241573] [2022-11-03 03:43:44,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:44,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:43:44,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:44,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:43:44,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:43:44,309 INFO L87 Difference]: Start difference. First operand 270 states and 379 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 03:43:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:44,716 INFO L93 Difference]: Finished difference Result 292 states and 418 transitions. [2022-11-03 03:43:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:43:44,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 81 [2022-11-03 03:43:44,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:44,719 INFO L225 Difference]: With dead ends: 292 [2022-11-03 03:43:44,719 INFO L226 Difference]: Without dead ends: 290 [2022-11-03 03:43:44,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:43:44,721 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 10 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:44,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 490 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-03 03:43:44,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 283. [2022-11-03 03:43:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 161 states have (on average 1.186335403726708) internal successors, (191), 171 states have internal predecessors, (191), 84 states have call successors, (84), 30 states have call predecessors, (84), 37 states have return successors, (126), 81 states have call predecessors, (126), 83 states have call successors, (126) [2022-11-03 03:43:44,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 401 transitions. [2022-11-03 03:43:44,835 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 401 transitions. Word has length 81 [2022-11-03 03:43:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:44,836 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 401 transitions. [2022-11-03 03:43:44,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 03:43:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 401 transitions. [2022-11-03 03:43:44,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 03:43:44,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:44,839 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 3, 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] [2022-11-03 03:43:44,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:43:44,839 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:44,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1192253819, now seen corresponding path program 2 times [2022-11-03 03:43:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:44,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244750320] [2022-11-03 03:43:44,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:44,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:51,033 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 03:43:51,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:51,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244750320] [2022-11-03 03:43:51,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244750320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:51,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968623878] [2022-11-03 03:43:51,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:43:51,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:51,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:51,040 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:51,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d38c0f-faf8-48c8-8023-130ad70761f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 03:43:51,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-03 03:43:51,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:43:51,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-03 03:43:51,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:51,697 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 03:43:52,356 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 03:43:52,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:43:52,363 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:43:52,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:43:52,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:43:52,382 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 03:43:52,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:43:52,395 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:43:52,525 INFO L356 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-03 03:43:52,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 98 [2022-11-03 03:43:52,551 INFO L356 Elim1Store]: treesize reduction 56, result has 8.2 percent of original size [2022-11-03 03:43:52,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 108 [2022-11-03 03:43:52,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:43:52,560 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 94 treesize of output 82 [2022-11-03 03:43:52,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:43:52,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:43:52,572 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2022-11-03 03:43:52,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:43:52,582 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 37 treesize of output 35 [2022-11-03 03:43:52,591 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 16 treesize of output 15 [2022-11-03 03:43:52,600 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 16 treesize of output 15 [2022-11-03 03:43:52,609 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 14 treesize of output 13 [2022-11-03 03:43:52,620 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 13 treesize of output 9 [2022-11-03 03:43:52,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:43:52,645 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 16 treesize of output 20 [2022-11-03 03:44:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 7 proven. 40 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 03:44:00,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:44:20,712 WARN L234 SmtUtils]: Spent 12.23s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:44:21,543 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 16)))) (.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|))) (.cse5 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24))) (and (forall ((v_ArrVal_1868 (Array Int Int))) (let ((.cse0 (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1868) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (or (forall ((v_ArrVal_1876 (Array Int Int))) (= (let ((.cse3 (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1876) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|)))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (+ 8 (select (select .cse3 .cse1) .cse2))))) .cse1)) (= 0 .cse1))))) (forall ((v_ArrVal_1876 (Array Int Int))) (let ((.cse8 (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1876) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|)))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (or (= .cse7 0) (forall ((v_ArrVal_1868 (Array Int Int))) (= (let ((.cse9 (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1868) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)))) (let ((.cse10 (select (select .cse9 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (select (select .cse8 (select (select .cse9 .cse10) .cse7)) (+ 8 (select (select .cse8 .cse10) .cse7))))) .cse7)))))) (forall ((v_ArrVal_1868 (Array Int Int))) (let ((.cse14 (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1868) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)))) (let ((.cse11 (select (select .cse14 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (or (= 0 .cse11) (forall ((v_ArrVal_1876 (Array Int Int))) (let ((.cse12 (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1876) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|)))) (let ((.cse13 (select (select .cse12 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (or (not (= (select (select .cse12 .cse11) .cse13) 0)) (not (= (select (select .cse14 .cse11) .cse13) 0)))))))))) (forall ((v_ArrVal_1876 (Array Int Int))) (let ((.cse18 (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1876) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|)))) (let ((.cse17 (select (select .cse18 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (or (forall ((v_ArrVal_1868 (Array Int Int))) (let ((.cse15 (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1868) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)))) (let ((.cse16 (select (select .cse15 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (= (select (select .cse15 (select (select .cse15 .cse16) .cse17)) (+ 8 (select (select .cse18 .cse16) .cse17))) .cse16)))) (= .cse17 0))))) (forall ((v_ArrVal_1876 (Array Int Int))) (let ((.cse19 (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1876) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|)))) (let ((.cse21 (select (select .cse19 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (or (forall ((v_ArrVal_1868 (Array Int Int))) (let ((.cse22 (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1868) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)))) (let ((.cse20 (select (select .cse22 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (or (not (= (select (select .cse19 .cse20) .cse21) 0)) (not (= (select (select .cse22 .cse20) .cse21) 0)))))) (= .cse21 0))))) (forall ((v_ArrVal_1868 (Array Int Int))) (let ((.cse24 (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1868) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)))) (let ((.cse25 (select (select .cse24 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (or (forall ((v_ArrVal_1876 (Array Int Int))) (let ((.cse23 (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1876) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|)))) (let ((.cse26 (select (select .cse23 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (= (select (select .cse23 (select (select .cse24 .cse25) .cse26)) (+ 8 (select (select .cse23 .cse25) .cse26))) .cse26)))) (= 0 .cse25))))))) is different from false [2022-11-03 03:44:21,768 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:44:21,769 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 2061 treesize of output 1670 [2022-11-03 03:45:11,717 WARN L234 SmtUtils]: Spent 49.56s on a formula simplification. DAG size of input: 1357 DAG size of output: 1125 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 03:45:11,723 INFO L356 Elim1Store]: treesize reduction 474, result has 82.6 percent of original size [2022-11-03 03:45:11,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 26 select indices, 26 select index equivalence classes, 0 disjoint index pairs (out of 325 index pairs), introduced 48 new quantified variables, introduced 325 case distinctions, treesize of input 262127 treesize of output 215920 [2022-11-03 03:45:16,746 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:45:16,751 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 228657 treesize of output 172809 [2022-11-03 03:45:27,306 INFO L244 Elim1Store]: Index analysis took 210 ms