./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_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_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/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_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/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_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/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 5b917a1c951859368fb2463a158063964361d86aeab261c924186dc34055576d --- 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 02:08:34,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:08:34,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:08:34,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:08:34,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:08:34,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:08:34,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:08:34,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:08:34,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:08:34,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:08:34,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:08:34,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:08:34,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:08:34,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:08:34,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:08:34,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:08:34,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:08:34,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:08:34,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:08:34,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:08:34,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:08:34,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:08:34,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:08:34,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:08:34,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:08:34,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:08:34,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:08:34,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:08:34,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:08:34,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:08:34,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:08:34,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:08:34,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:08:34,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:08:34,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:08:34,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:08:34,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:08:34,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:08:34,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:08:34,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:08:34,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:08:34,787 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:08:34,826 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:08:34,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:08:34,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:08:34,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:08:34,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:08:34,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:08:34,829 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:08:34,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:08:34,830 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:08:34,830 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:08:34,830 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:08:34,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:08:34,831 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:08:34,831 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:08:34,831 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:08:34,832 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:08:34,832 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:08:34,832 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:08:34,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:08:34,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:08:34,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:08:34,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:08:34,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:08:34,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:08:34,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:08:34,835 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:08:34,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:08:34,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:08:34,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:08:34,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:08:34,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:08:34,848 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:08:34,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:08:34,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:08:34,849 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:08:34,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:08:34,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:08:34,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:08:34,850 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_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b917a1c951859368fb2463a158063964361d86aeab261c924186dc34055576d [2022-11-03 02:08:35,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:08:35,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:08:35,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:08:35,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:08:35,116 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:08:35,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i [2022-11-03 02:08:35,178 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/data/a2dc5f34c/9b46d26dde3d45a195fc455c9d4f65a4/FLAG42e3e69ce [2022-11-03 02:08:35,957 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:08:35,959 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i [2022-11-03 02:08:36,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/data/a2dc5f34c/9b46d26dde3d45a195fc455c9d4f65a4/FLAG42e3e69ce [2022-11-03 02:08:36,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/data/a2dc5f34c/9b46d26dde3d45a195fc455c9d4f65a4 [2022-11-03 02:08:36,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:08:36,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:08:36,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:08:36,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:08:36,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:08:36,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:08:36" (1/1) ... [2022-11-03 02:08:36,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd8ccfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:36, skipping insertion in model container [2022-11-03 02:08:36,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:08:36" (1/1) ... [2022-11-03 02:08:36,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:08:36,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:08:36,515 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_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2022-11-03 02:08:36,523 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_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2022-11-03 02:08:37,328 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,331 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,332 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,333 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,334 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,353 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,354 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,360 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,361 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,365 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,366 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,367 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,368 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:37,748 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 02:08:37,749 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 02:08:37,750 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 02:08:37,752 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 02:08:37,753 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 02:08:37,754 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 02:08:37,754 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 02:08:37,755 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 02:08:37,756 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 02:08:37,756 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 02:08:37,932 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 02:08:37,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:08:38,051 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:08:38,066 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_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2022-11-03 02:08:38,083 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_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2022-11-03 02:08:38,136 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,137 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,137 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,138 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,139 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,145 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,146 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,147 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,148 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,149 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,149 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,150 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,150 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:08:38,183 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 02:08:38,184 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 02:08:38,185 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 02:08:38,186 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 02:08:38,187 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 02:08:38,188 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 02:08:38,189 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 02:08:38,189 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 02:08:38,190 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 02:08:38,190 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 02:08:38,212 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 02:08:38,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:08:38,408 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:08:38,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38 WrapperNode [2022-11-03 02:08:38,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:08:38,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:08:38,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:08:38,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:08:38,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (1/1) ... [2022-11-03 02:08:38,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (1/1) ... [2022-11-03 02:08:38,569 INFO L138 Inliner]: procedures = 679, calls = 1036, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 93 [2022-11-03 02:08:38,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:08:38,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:08:38,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:08:38,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:08:38,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (1/1) ... [2022-11-03 02:08:38,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (1/1) ... [2022-11-03 02:08:38,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (1/1) ... [2022-11-03 02:08:38,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (1/1) ... [2022-11-03 02:08:38,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (1/1) ... [2022-11-03 02:08:38,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (1/1) ... [2022-11-03 02:08:38,608 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (1/1) ... [2022-11-03 02:08:38,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (1/1) ... [2022-11-03 02:08:38,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:08:38,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:08:38,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:08:38,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:08:38,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (1/1) ... [2022-11-03 02:08:38,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:08:38,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:38,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:08:38,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:08:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2022-11-03 02:08:38,705 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2022-11-03 02:08:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:08:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:08:38,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:08:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-11-03 02:08:38,706 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-11-03 02:08:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-11-03 02:08:38,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-11-03 02:08:38,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:08:38,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:08:38,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:08:38,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:08:38,707 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-11-03 02:08:38,708 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-11-03 02:08:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:08:38,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:08:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:08:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:08:38,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:08:38,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:08:39,026 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:08:39,027 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:08:39,241 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:08:39,340 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:08:39,340 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:08:39,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:08:39 BoogieIcfgContainer [2022-11-03 02:08:39,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:08:39,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:08:39,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:08:39,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:08:39,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:08:36" (1/3) ... [2022-11-03 02:08:39,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2783026c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:08:39, skipping insertion in model container [2022-11-03 02:08:39,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:38" (2/3) ... [2022-11-03 02:08:39,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2783026c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:08:39, skipping insertion in model container [2022-11-03 02:08:39,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:08:39" (3/3) ... [2022-11-03 02:08:39,362 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_init_harness.i [2022-11-03 02:08:39,381 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:08:39,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:08:39,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:08:39,455 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;@6d1333e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:08:39,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:08:39,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 02:08:39,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:08:39,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:39,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:39,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:39,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:39,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2020375399, now seen corresponding path program 1 times [2022-11-03 02:08:39,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:39,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818454350] [2022-11-03 02:08:39,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:39,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:41,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:41,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:41,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818454350] [2022-11-03 02:08:41,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818454350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:41,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:41,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:08:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974191444] [2022-11-03 02:08:41,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:41,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:08:41,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:41,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:08:41,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:08:41,802 INFO L87 Difference]: Start difference. First operand has 41 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:08:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:42,123 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2022-11-03 02:08:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:08:42,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-03 02:08:42,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:42,141 INFO L225 Difference]: With dead ends: 78 [2022-11-03 02:08:42,142 INFO L226 Difference]: Without dead ends: 41 [2022-11-03 02:08:42,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:08:42,151 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:42,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 179 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:08:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-03 02:08:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-03 02:08:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-03 02:08:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-11-03 02:08:42,206 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 16 [2022-11-03 02:08:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:42,207 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-11-03 02:08:42,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:08:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-11-03 02:08:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:08:42,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:42,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:42,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:08:42,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:42,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:42,215 INFO L85 PathProgramCache]: Analyzing trace with hash 538116661, now seen corresponding path program 1 times [2022-11-03 02:08:42,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:42,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126675329] [2022-11-03 02:08:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:42,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:42,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:42,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126675329] [2022-11-03 02:08:42,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126675329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:42,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:42,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:08:42,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034398854] [2022-11-03 02:08:42,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:42,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:08:42,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:42,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:08:42,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:08:42,400 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:08:42,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:42,585 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2022-11-03 02:08:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:08:42,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-03 02:08:42,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:42,589 INFO L225 Difference]: With dead ends: 79 [2022-11-03 02:08:42,589 INFO L226 Difference]: Without dead ends: 41 [2022-11-03 02:08:42,591 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 02:08:42,592 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:42,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 160 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:08:42,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-03 02:08:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-03 02:08:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-03 02:08:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-03 02:08:42,612 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 18 [2022-11-03 02:08:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:42,613 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-03 02:08:42,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:08:42,613 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-03 02:08:42,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:08:42,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:42,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:42,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:08:42,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:42,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:42,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1170184183, now seen corresponding path program 1 times [2022-11-03 02:08:42,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:42,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019046054] [2022-11-03 02:08:42,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:42,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:42,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:42,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019046054] [2022-11-03 02:08:42,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019046054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:42,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:42,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:08:42,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155181162] [2022-11-03 02:08:42,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:42,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:08:42,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:08:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:08:42,843 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:08:43,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:43,087 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2022-11-03 02:08:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:08:43,088 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-03 02:08:43,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:43,089 INFO L225 Difference]: With dead ends: 88 [2022-11-03 02:08:43,089 INFO L226 Difference]: Without dead ends: 49 [2022-11-03 02:08:43,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:08:43,091 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:43,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 170 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:08:43,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-03 02:08:43,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-11-03 02:08:43,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-03 02:08:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-11-03 02:08:43,102 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 20 [2022-11-03 02:08:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:43,102 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-11-03 02:08:43,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:08:43,102 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-11-03 02:08:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 02:08:43,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:43,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:43,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:08:43,104 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:43,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:43,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1925302219, now seen corresponding path program 1 times [2022-11-03 02:08:43,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:43,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458818564] [2022-11-03 02:08:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:43,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:43,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:43,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458818564] [2022-11-03 02:08:43,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458818564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:43,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:43,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:08:43,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708079750] [2022-11-03 02:08:43,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:43,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:08:43,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:43,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:08:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:08:43,412 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:08:43,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:43,685 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2022-11-03 02:08:43,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:08:43,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-11-03 02:08:43,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:43,687 INFO L225 Difference]: With dead ends: 88 [2022-11-03 02:08:43,687 INFO L226 Difference]: Without dead ends: 48 [2022-11-03 02:08:43,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:08:43,689 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 52 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:43,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 170 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:08:43,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-03 02:08:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2022-11-03 02:08:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-03 02:08:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-11-03 02:08:43,699 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 21 [2022-11-03 02:08:43,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:43,699 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-11-03 02:08:43,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:08:43,699 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-11-03 02:08:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 02:08:43,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:43,700 INFO L195 NwaCegarLoop]: trace histogram [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 02:08:43,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:08:43,701 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:43,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:43,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1961749134, now seen corresponding path program 1 times [2022-11-03 02:08:43,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:43,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297213284] [2022-11-03 02:08:43,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:43,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:44,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:44,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297213284] [2022-11-03 02:08:44,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297213284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:44,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:44,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:08:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855377646] [2022-11-03 02:08:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:44,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:08:44,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:44,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:08:44,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:08:44,950 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:08:45,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:45,420 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2022-11-03 02:08:45,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:08:45,421 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2022-11-03 02:08:45,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:45,422 INFO L225 Difference]: With dead ends: 85 [2022-11-03 02:08:45,422 INFO L226 Difference]: Without dead ends: 48 [2022-11-03 02:08:45,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:08:45,424 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 40 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:45,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 199 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:08:45,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-03 02:08:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-11-03 02:08:45,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 29 states have internal predecessors, (33), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-03 02:08:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-11-03 02:08:45,434 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 24 [2022-11-03 02:08:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:45,435 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-11-03 02:08:45,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:08:45,435 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-11-03 02:08:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:08:45,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:45,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 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 02:08:45,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:08:45,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:45,437 INFO L85 PathProgramCache]: Analyzing trace with hash -314126348, now seen corresponding path program 1 times [2022-11-03 02:08:45,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:45,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200620099] [2022-11-03 02:08:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:45,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:45,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200620099] [2022-11-03 02:08:45,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200620099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:45,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628821195] [2022-11-03 02:08:45,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:45,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:45,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:45,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:45,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:08:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:46,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 02:08:46,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:58,072 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 02:08:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:59,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:09:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:00,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628821195] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:09:00,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1738261095] [2022-11-03 02:09:00,329 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-03 02:09:00,329 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:09:00,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:09:00,338 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:09:00,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:09:00,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:00,474 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 02:09:00,475 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 02:09:00,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:00,515 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 02:09:00,560 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 121 for LOIs [2022-11-03 02:09:00,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:00,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:00,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:00,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:00,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:09:00,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:09:00,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:00,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:00,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:00,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:00,961 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:09:00,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:00,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:09:01,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:09:01,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:09:01,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:09:01,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:09:01,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:09:01,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:09:01,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:09:01,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:09:01,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:09:01,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:09:01,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:09:01,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:01,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:09:02,017 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 139 for LOIs [2022-11-03 02:09:02,124 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 141 for LOIs [2022-11-03 02:09:03,271 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 115 for LOIs [2022-11-03 02:09:03,296 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-03 02:09:03,376 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:09:26,595 WARN L234 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 175 DAG size of output: 155 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:38,870 WARN L234 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 178 DAG size of output: 158 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:39,180 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1202#(and (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| Int)) (and (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 8) 0) (= 32 (select |#length| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 8) 0) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 24)) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 0) 16) (not (= (mod (ite (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 0) 0 1) 256) 0)) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 4)) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 16) 0) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 5)) (<= 0 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 24) 0) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 0)) (= (select |#valid| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 1) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 16) 0) (< |#StackHeapBarrier| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 2)) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 3)))) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (<= 0 |__VERIFIER_assert_#in~cond|) (= 0 (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32))) (= |~#s_can_fail_allocator_static~0.offset| 0) (= 31 (select |#length| 2)) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= 2 (select |#length| 1)) (= 78 (select |#length| 4)) (= (select |#valid| 3) 1) (= (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.offset|) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32)) 0) (<= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= 40 (select |#length| 5)) (= (select |#valid| 4) 1) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 1) 1) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 0) 0) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.base|) (= ~tl_last_error~0 0) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= 5 |~#s_can_fail_allocator_static~0.base|) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:09:39,181 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:09:39,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:09:39,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6] total 22 [2022-11-03 02:09:39,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617831661] [2022-11-03 02:09:39,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:09:39,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:09:39,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:39,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:09:39,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1545, Unknown=5, NotChecked=0, Total=1722 [2022-11-03 02:09:39,184 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 22 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 9 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-03 02:09:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:39,642 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2022-11-03 02:09:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:09:39,642 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 9 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 26 [2022-11-03 02:09:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:39,643 INFO L225 Difference]: With dead ends: 102 [2022-11-03 02:09:39,644 INFO L226 Difference]: Without dead ends: 62 [2022-11-03 02:09:39,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 47.7s TimeCoverageRelationStatistics Valid=204, Invalid=1771, Unknown=5, NotChecked=0, Total=1980 [2022-11-03 02:09:39,647 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 56 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:39,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 283 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 219 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2022-11-03 02:09:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-03 02:09:39,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 49. [2022-11-03 02:09:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-03 02:09:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-11-03 02:09:39,660 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 26 [2022-11-03 02:09:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:39,661 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-11-03 02:09:39,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 9 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-03 02:09:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-11-03 02:09:39,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 02:09:39,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:39,662 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:09:39,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:39,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:09:39,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:39,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:39,888 INFO L85 PathProgramCache]: Analyzing trace with hash -694288424, now seen corresponding path program 1 times [2022-11-03 02:09:39,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:39,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912248121] [2022-11-03 02:09:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:39,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:09:40,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:40,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912248121] [2022-11-03 02:09:40,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912248121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:40,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:40,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:09:40,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117415431] [2022-11-03 02:09:40,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:40,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:09:40,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:40,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:09:40,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:09:40,048 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:09:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:40,160 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2022-11-03 02:09:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:09:40,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-03 02:09:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:40,162 INFO L225 Difference]: With dead ends: 61 [2022-11-03 02:09:40,162 INFO L226 Difference]: Without dead ends: 59 [2022-11-03 02:09:40,163 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 02:09:40,163 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:40,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 244 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-03 02:09:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-11-03 02:09:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 38 states have internal predecessors, (41), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-03 02:09:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-11-03 02:09:40,177 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 27 [2022-11-03 02:09:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:40,177 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-11-03 02:09:40,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:09:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-11-03 02:09:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:09:40,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:40,179 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:09:40,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:09:40,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash 739444463, now seen corresponding path program 1 times [2022-11-03 02:09:40,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:40,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183837851] [2022-11-03 02:09:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:40,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:09:40,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:40,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183837851] [2022-11-03 02:09:40,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183837851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:40,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908980726] [2022-11-03 02:09:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:40,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:40,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:40,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:40,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:09:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:41,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-03 02:09:41,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:41,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:41,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:41,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-03 02:09:41,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:41,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:41,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:41,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-03 02:10:03,629 WARN L234 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:10:03,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:10:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:10:04,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908980726] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:10:04,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [939517624] [2022-11-03 02:10:04,266 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-03 02:10:04,267 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:10:04,267 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:10:04,267 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:10:04,267 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:10:04,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:04,356 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 02:10:04,356 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 02:10:04,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:04,378 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 02:10:04,405 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 121 for LOIs [2022-11-03 02:10:04,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:04,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:04,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:04,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:04,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:10:04,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:04,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:04,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:04,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:04,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:10:04,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:10:04,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:04,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:10:05,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:10:05,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:10:05,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:10:05,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:10:05,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:10:05,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:10:05,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:10:05,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:10:05,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:10:05,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:10:05,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:10:05,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:10:05,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:10:05,515 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 138 for LOIs [2022-11-03 02:10:05,616 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 141 for LOIs [2022-11-03 02:10:06,660 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 115 for LOIs [2022-11-03 02:10:06,685 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-03 02:10:06,764 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:10:17,594 WARN L234 SmtUtils]: Spent 8.67s on a formula simplification. DAG size of input: 175 DAG size of output: 155 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:29,487 WARN L234 SmtUtils]: Spent 8.67s on a formula simplification. DAG size of input: 177 DAG size of output: 157 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:29,810 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1830#(and (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= 0 (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32))) (= |~#s_can_fail_allocator_static~0.offset| 0) (= 31 (select |#length| 2)) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= 2 (select |#length| 1)) (= 78 (select |#length| 4)) (= (select |#valid| 3) 1) (= (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.offset|) (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| Int)) (and (= 16 (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 8) 0) (= (select |#valid| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 1) (= 32 (select |#length| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 24) |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| 4)) (not (= (mod (ite (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| 0) 0 1) 256) 0)) (not (= 5 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 0) |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (not (= 2 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|)) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 16) 0) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 8) 0) (< |#StackHeapBarrier| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| 0)) (not (= 3 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|)) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 24) 0) (<= 0 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 16) 0))) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32)) 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0) (= 40 (select |#length| 5)) (= (select |#valid| 4) 1) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 1) 1) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 0) 0) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.base|) (= ~tl_last_error~0 0) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= 5 |~#s_can_fail_allocator_static~0.base|) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:10:29,810 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:10:29,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:10:29,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 8] total 25 [2022-11-03 02:10:29,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303405342] [2022-11-03 02:10:29,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:10:29,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:10:29,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:29,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:10:29,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1699, Unknown=6, NotChecked=0, Total=1892 [2022-11-03 02:10:29,813 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-03 02:10:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:32,405 INFO L93 Difference]: Finished difference Result 134 states and 153 transitions. [2022-11-03 02:10:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 02:10:32,405 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) Word has length 30 [2022-11-03 02:10:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:32,407 INFO L225 Difference]: With dead ends: 134 [2022-11-03 02:10:32,407 INFO L226 Difference]: Without dead ends: 79 [2022-11-03 02:10:32,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 48.0s TimeCoverageRelationStatistics Valid=223, Invalid=2122, Unknown=7, NotChecked=0, Total=2352 [2022-11-03 02:10:32,409 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 67 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:32,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 374 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 271 Invalid, 0 Unknown, 81 Unchecked, 0.3s Time] [2022-11-03 02:10:32,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-03 02:10:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2022-11-03 02:10:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 14 states have call successors, (14), 11 states have call predecessors, (14), 12 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2022-11-03 02:10:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-11-03 02:10:32,427 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 30 [2022-11-03 02:10:32,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:32,428 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-11-03 02:10:32,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-03 02:10:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-11-03 02:10:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 02:10:32,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:32,429 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:10:32,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:10:32,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:10:32,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:32,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1372673585, now seen corresponding path program 2 times [2022-11-03 02:10:32,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:32,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625217983] [2022-11-03 02:10:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:32,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:10:33,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:33,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625217983] [2022-11-03 02:10:33,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625217983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:10:33,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559266507] [2022-11-03 02:10:33,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:10:33,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:10:33,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:10:33,719 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:10:33,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:10:33,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 02:10:33,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:10:33,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 02:10:33,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:10:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:10:34,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:10:34,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559266507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:34,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:10:34,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-11-03 02:10:34,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866704454] [2022-11-03 02:10:34,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:34,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:34,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:10:34,434 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:10:34,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:34,529 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2022-11-03 02:10:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:10:34,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2022-11-03 02:10:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:34,531 INFO L225 Difference]: With dead ends: 115 [2022-11-03 02:10:34,531 INFO L226 Difference]: Without dead ends: 68 [2022-11-03 02:10:34,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:10:34,534 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:34,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2022-11-03 02:10:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-03 02:10:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2022-11-03 02:10:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.125) internal successors, (45), 41 states have internal predecessors, (45), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-03 02:10:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2022-11-03 02:10:34,561 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 32 [2022-11-03 02:10:34,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:34,562 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2022-11-03 02:10:34,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:10:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2022-11-03 02:10:34,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 02:10:34,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:34,566 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:10:34,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:10:34,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:10:34,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:34,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1842443058, now seen corresponding path program 1 times [2022-11-03 02:10:34,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:34,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645418993] [2022-11-03 02:10:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:34,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:10:35,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:35,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645418993] [2022-11-03 02:10:35,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645418993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:10:35,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863808292] [2022-11-03 02:10:35,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:35,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:10:35,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:10:35,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:10:35,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:10:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:35,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-03 02:10:35,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:10:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:10:36,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:10:49,497 WARN L234 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:59,647 WARN L234 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:00,093 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:11:00,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2022-11-03 02:11:00,105 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:11:00,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-03 02:11:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:11:00,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863808292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:11:00,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2114984553] [2022-11-03 02:11:00,189 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2022-11-03 02:11:00,190 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:11:00,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:11:00,190 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:11:00,190 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:11:00,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,271 INFO L356 Elim1Store]: treesize reduction 40, result has 48.1 percent of original size [2022-11-03 02:11:00,271 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 02:11:00,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,348 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 02:11:00,349 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 02:11:00,386 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 121 for LOIs [2022-11-03 02:11:00,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:11:00,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:11:00,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:11:00,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:00,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:11:01,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:11:01,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:01,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:11:01,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:01,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:11:01,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:11:01,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:01,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:01,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:11:01,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:11:01,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:01,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:01,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:11:01,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:11:01,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:11:01,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:11:01,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:11:01,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:11:01,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:11:01,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:01,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:11:02,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:11:02,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:11:02,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:02,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:02,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:11:02,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:02,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:02,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:11:02,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:11:02,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:11:02,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:02,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:02,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:11:02,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:11:02,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:02,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:02,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:11:02,532 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 136 for LOIs [2022-11-03 02:11:02,734 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 204 for LOIs [2022-11-03 02:11:03,173 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 136 for LOIs [2022-11-03 02:11:04,104 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 172 for LOIs [2022-11-03 02:11:04,182 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-03 02:11:04,246 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:11:16,086 WARN L234 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 175 DAG size of output: 155 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:28,531 WARN L234 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 177 DAG size of output: 157 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:42,924 WARN L234 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 189 DAG size of output: 167 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:42,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2114984553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:42,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:11:42,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [16, 22, 18] total 65 [2022-11-03 02:11:42,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581334930] [2022-11-03 02:11:42,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:42,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 02:11:42,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 02:11:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=3863, Unknown=1, NotChecked=0, Total=4160 [2022-11-03 02:11:42,931 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 16 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 02:11:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:47,063 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2022-11-03 02:11:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 02:11:47,064 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 16 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 40 [2022-11-03 02:11:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:47,064 INFO L225 Difference]: With dead ends: 80 [2022-11-03 02:11:47,065 INFO L226 Difference]: Without dead ends: 73 [2022-11-03 02:11:47,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 62 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 65.9s TimeCoverageRelationStatistics Valid=404, Invalid=4565, Unknown=1, NotChecked=0, Total=4970 [2022-11-03 02:11:47,067 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 60 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:47,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 113 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 238 Invalid, 0 Unknown, 188 Unchecked, 0.6s Time] [2022-11-03 02:11:47,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-03 02:11:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2022-11-03 02:11:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 46 states have internal predecessors, (50), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 02:11:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-11-03 02:11:47,099 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 40 [2022-11-03 02:11:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:47,100 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-11-03 02:11:47,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 16 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 02:11:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-11-03 02:11:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 02:11:47,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:47,101 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-03 02:11:47,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:11:47,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:11:47,315 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:47,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1511104578, now seen corresponding path program 1 times [2022-11-03 02:11:47,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:47,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831893250] [2022-11-03 02:11:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:47,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 02:11:50,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:50,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831893250] [2022-11-03 02:11:50,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831893250] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:11:50,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412045830] [2022-11-03 02:11:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:50,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:11:50,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:11:50,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:11:50,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:11:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:50,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-03 02:11:50,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:11:50,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:50,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:50,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:50,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-03 02:11:50,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:50,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:50,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:50,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-03 02:12:16,098 WARN L234 SmtUtils]: Spent 8.34s 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 02:12:48,973 WARN L234 SmtUtils]: Spent 16.12s on a formula simplification. DAG size of input: 67 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:13:39,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:13:50,018 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:13:50,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 10940 treesize of output 10726 [2022-11-03 02:13:50,518 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:13:50,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 14437 treesize of output 14301 [2022-11-03 02:13:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 02:13:57,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412045830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:13:57,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [43614917] [2022-11-03 02:13:57,515 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2022-11-03 02:13:57,515 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:13:57,516 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:13:57,516 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:13:57,516 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:13:57,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,592 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 02:13:57,592 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 02:13:57,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,608 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 02:13:57,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:13:57,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:13:57,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-03 02:13:57,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:57,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-03 02:13:58,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-03 02:13:58,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-03 02:13:58,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-03 02:13:58,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-03 02:13:58,400 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 121 for LOIs [2022-11-03 02:13:58,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:13:58,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:13:58,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:13:58,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:13:58,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:13:58,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:13:58,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:13:58,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:13:58,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:58,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:13:59,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:13:59,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:13:59,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:13:59,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:13:59,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:13:59,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:13:59,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:13:59,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:13:59,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:13:59,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:13:59,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:13:59,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:13:59,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:13:59,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:13:59,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:13:59,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:13:59,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:13:59,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:13:59,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:13:59,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:13:59,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:13:59,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:59,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:14:00,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:14:00,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:14:00,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:14:00,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:14:00,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:14:00,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:14:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:14:00,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:14:00,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:14:00,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:14:00,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:14:00,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:14:00,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:14:00,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:14:00,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:14:00,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:14:00,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:00,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:14:00,748 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 136 for LOIs [2022-11-03 02:14:00,905 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 172 for LOIs [2022-11-03 02:14:00,983 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 186 for LOIs [2022-11-03 02:14:02,527 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 19 for LOIs [2022-11-03 02:14:02,534 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-03 02:14:02,598 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:14:38,776 WARN L234 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 175 DAG size of output: 155 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:14:50,692 WARN L234 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 178 DAG size of output: 158 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:00,479 WARN L234 SmtUtils]: Spent 8.74s on a formula simplification. DAG size of input: 181 DAG size of output: 162 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:11,780 WARN L234 SmtUtils]: Spent 8.87s on a formula simplification. DAG size of input: 189 DAG size of output: 167 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:13,507 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3393#(and (<= 0 |__VERIFIER_assert_#in~cond|) (= (mod __VERIFIER_assert_~cond 256) 0) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= ~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 02:15:13,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:15:13,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:15:13,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 13] total 39 [2022-11-03 02:15:13,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011487802] [2022-11-03 02:15:13,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:15:13,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-03 02:15:13,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:15:13,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-03 02:15:13,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=4167, Unknown=27, NotChecked=0, Total=4556 [2022-11-03 02:15:13,510 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 39 states, 32 states have (on average 2.1875) internal successors, (70), 34 states have internal predecessors, (70), 18 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 14 states have call predecessors, (25), 17 states have call successors, (25) [2022-11-03 02:15:27,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:15:27,006 INFO L93 Difference]: Finished difference Result 146 states and 163 transitions. [2022-11-03 02:15:27,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:15:27,007 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 32 states have (on average 2.1875) internal successors, (70), 34 states have internal predecessors, (70), 18 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 14 states have call predecessors, (25), 17 states have call successors, (25) Word has length 52 [2022-11-03 02:15:27,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:15:27,008 INFO L225 Difference]: With dead ends: 146 [2022-11-03 02:15:27,008 INFO L226 Difference]: Without dead ends: 137 [2022-11-03 02:15:27,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 96 SyntacticMatches, 10 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2570 ImplicationChecksByTransitivity, 192.0s TimeCoverageRelationStatistics Valid=519, Invalid=6091, Unknown=32, NotChecked=0, Total=6642 [2022-11-03 02:15:27,012 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 123 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:15:27,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 658 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 565 Invalid, 0 Unknown, 209 Unchecked, 0.9s Time] [2022-11-03 02:15:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-03 02:15:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 110. [2022-11-03 02:15:27,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 71 states have (on average 1.0845070422535212) internal successors, (77), 74 states have internal predecessors, (77), 20 states have call successors, (20), 17 states have call predecessors, (20), 18 states have return successors, (21), 18 states have call predecessors, (21), 19 states have call successors, (21) [2022-11-03 02:15:27,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2022-11-03 02:15:27,056 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 52 [2022-11-03 02:15:27,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:15:27,057 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2022-11-03 02:15:27,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 32 states have (on average 2.1875) internal successors, (70), 34 states have internal predecessors, (70), 18 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 14 states have call predecessors, (25), 17 states have call successors, (25) [2022-11-03 02:15:27,057 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2022-11-03 02:15:27,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 02:15:27,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:15:27,059 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-03 02:15:27,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:15:27,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 02:15:27,263 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:15:27,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:15:27,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2062891035, now seen corresponding path program 1 times [2022-11-03 02:15:27,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:15:27,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970608499] [2022-11-03 02:15:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:27,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:15:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:15:30,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:15:30,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970608499] [2022-11-03 02:15:30,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970608499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:15:30,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151322546] [2022-11-03 02:15:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:30,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:15:30,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:15:30,551 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:15:30,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebadd8f-a06e-4f43-86c9-4d1845aca39e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:15:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:30,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-03 02:15:30,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:04,176 WARN L234 SmtUtils]: Spent 9.03s on a formula simplification. DAG size of input: 43 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:17:11,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:18:25,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:18:26,311 INFO L356 Elim1Store]: treesize reduction 4, result has 95.1 percent of original size [2022-11-03 02:18:26,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 113 treesize of output 154 [2022-11-03 02:18:26,930 INFO L356 Elim1Store]: treesize reduction 22, result has 67.2 percent of original size [2022-11-03 02:18:26,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 145 treesize of output 149 [2022-11-03 02:18:44,715 INFO L356 Elim1Store]: treesize reduction 17, result has 80.5 percent of original size [2022-11-03 02:18:44,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 131 [2022-11-03 02:18:45,780 INFO L356 Elim1Store]: treesize reduction 15, result has 79.5 percent of original size [2022-11-03 02:18:45,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 131 treesize of output 150 [2022-11-03 02:19:00,454 WARN L234 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 50 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:00,620 INFO L356 Elim1Store]: treesize reduction 45, result has 2.2 percent of original size [2022-11-03 02:19:00,621 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 1 [2022-11-03 02:19:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 02:19:02,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151322546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:19:02,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2075629387] [2022-11-03 02:19:02,478 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2022-11-03 02:19:02,479 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:19:02,479 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:19:02,479 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:19:02,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:19:02,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,158 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-03 02:19:03,159 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 02:19:03,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,202 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 02:19:03,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:19:03,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:19:03,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-03 02:19:03,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:03,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-03 02:19:04,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-03 02:19:04,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-03 02:19:04,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-03 02:19:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:04,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-03 02:19:04,940 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 121 for LOIs [2022-11-03 02:19:05,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:19:05,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:19:05,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:19:05,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:19:05,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:19:05,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:19:05,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:05,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:19:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:19:06,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:06,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,599 INFO L356 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2022-11-03 02:19:06,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 701 treesize of output 737 [2022-11-03 02:19:06,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 643 treesize of output 674 [2022-11-03 02:19:06,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:06,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:06,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:06,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:06,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:06,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:07,306 INFO L356 Elim1Store]: treesize reduction 72, result has 32.7 percent of original size [2022-11-03 02:19:07,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 585 treesize of output 559 [2022-11-03 02:19:07,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:07,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:07,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:07,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:07,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:07,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:07,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:07,732 INFO L356 Elim1Store]: treesize reduction 70, result has 33.3 percent of original size [2022-11-03 02:19:07,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 535 treesize of output 511 [2022-11-03 02:19:07,974 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 24 treesize of output 13 [2022-11-03 02:19:08,004 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 02:19:08,142 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 02:19:08,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:08,517 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 38 treesize of output 29 [2022-11-03 02:19:08,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-03 02:19:08,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 701 treesize of output 732 [2022-11-03 02:19:08,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:08,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:08,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:09,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:09,222 INFO L356 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2022-11-03 02:19:09,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 643 treesize of output 679 [2022-11-03 02:19:09,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:09,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:09,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:09,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:09,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:09,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:09,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:09,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:09,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:09,907 INFO L356 Elim1Store]: treesize reduction 70, result has 33.3 percent of original size [2022-11-03 02:19:09,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 585 treesize of output 561 [2022-11-03 02:19:09,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:09,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:09,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:10,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:10,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:10,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:10,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:10,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:10,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:10,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:10,351 INFO L356 Elim1Store]: treesize reduction 72, result has 32.7 percent of original size [2022-11-03 02:19:10,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 539 treesize of output 513 [2022-11-03 02:19:10,598 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 02:19:10,750 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 24 treesize of output 13 [2022-11-03 02:19:10,781 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 02:19:11,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,083 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 38 treesize of output 29 [2022-11-03 02:19:11,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-03 02:19:11,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:19:11,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:19:11,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:19:11,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:11,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:19:12,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:19:12,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:19:12,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:19:12,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:19:12,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:19:12,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:19:12,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:19:12,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:12,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:13,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:19:13,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:13,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:19:13,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:19:13,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:13,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:13,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:13,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:13,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:19:13,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:13,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:13,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:13,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:13,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:19:14,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-03 02:19:14,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-03 02:19:14,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:19:14,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-03 02:19:14,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:19:14,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:14,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:19:15,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:19:15,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:19:15,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:15,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:15,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:15,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:15,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:15,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:15,915 INFO L356 Elim1Store]: treesize reduction 72, result has 32.7 percent of original size [2022-11-03 02:19:15,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 701 treesize of output 675 [2022-11-03 02:19:15,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 651 treesize of output 682 [2022-11-03 02:19:16,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:16,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:16,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:16,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:16,227 INFO L356 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2022-11-03 02:19:16,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 593 treesize of output 629 [2022-11-03 02:19:16,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:16,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:16,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:16,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:16,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:16,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:16,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:16,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:16,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:19:16,661 INFO L356 Elim1Store]: treesize reduction 70, result has 33.3 percent of original size [2022-11-03 02:19:16,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 535 treesize of output 511 [2022-11-03 02:19:16,992 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 02:19:17,049 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 24 treesize of output 13 [2022-11-03 02:19:17,081 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 02:19:17,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,323 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 45 treesize of output 34 [2022-11-03 02:19:17,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-03 02:19:17,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-03 02:19:17,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:19:17,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 02:19:17,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:19:17,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-03 02:19:17,815 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 141 for LOIs [2022-11-03 02:19:18,029 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 172 for LOIs [2022-11-03 02:19:18,137 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2022-11-03 02:19:18,185 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 186 for LOIs [2022-11-03 02:19:19,882 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-03 02:19:19,950 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:19:47,972 WARN L234 SmtUtils]: Spent 10.79s on a formula simplification. DAG size of input: 175 DAG size of output: 155 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:38,023 WARN L234 SmtUtils]: Spent 17.50s on a formula simplification. DAG size of input: 196 DAG size of output: 159 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:02,773 WARN L234 SmtUtils]: Spent 18.37s on a formula simplification. DAG size of input: 199 DAG size of output: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:27,587 WARN L234 SmtUtils]: Spent 11.70s on a formula simplification. DAG size of input: 189 DAG size of output: 167 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:41,727 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4232#(and (= (mod __VERIFIER_assert_~cond 256) 0) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= ~tl_last_error~0 0) (= |#NULL.offset| 0) (= 5 |~#s_can_fail_allocator_static~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:21:41,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:21:41,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:21:41,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 23] total 60 [2022-11-03 02:21:41,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451989191] [2022-11-03 02:21:41,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:21:41,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-03 02:21:41,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:41,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-03 02:21:41,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=7201, Unknown=28, NotChecked=0, Total=7656 [2022-11-03 02:21:41,732 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand has 60 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 48 states have internal predecessors, (93), 21 states have call successors, (28), 4 states have call predecessors, (28), 19 states have return successors, (28), 19 states have call predecessors, (28), 20 states have call successors, (28)