./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh --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 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- 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-2329fc7 [2022-12-14 10:15:33,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:15:33,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:15:33,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:15:33,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:15:33,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:15:33,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:15:33,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:15:33,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:15:33,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:15:33,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:15:33,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:15:33,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:15:33,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:15:33,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:15:33,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:15:33,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:15:33,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:15:33,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:15:33,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:15:33,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:15:33,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:15:33,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:15:33,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:15:33,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:15:33,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:15:33,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:15:33,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:15:33,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:15:33,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:15:33,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:15:33,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:15:33,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:15:33,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:15:33,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:15:33,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:15:33,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:15:33,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:15:33,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:15:33,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:15:33,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:15:33,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 10:15:33,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:15:33,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:15:33,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:15:33,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:15:33,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:15:33,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:15:33,143 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:15:33,143 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:15:33,143 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:15:33,143 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:15:33,143 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:15:33,144 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:15:33,144 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:15:33,144 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:15:33,144 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:15:33,144 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:15:33,145 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:15:33,145 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:15:33,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:15:33,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:15:33,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:15:33,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:15:33,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:15:33,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:15:33,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:15:33,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:15:33,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:15:33,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:15:33,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:15:33,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:15:33,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:15:33,148 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:15:33,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:15:33,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:15:33,149 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:15:33,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:15:33,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:15:33,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:15:33,149 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_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2022-12-14 10:15:33,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:15:33,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:15:33,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:15:33,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:15:33,352 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:15:33,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2022-12-14 10:15:35,855 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:15:36,207 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:15:36,208 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2022-12-14 10:15:36,232 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/data/d3d11f35e/a0762ca1c572404dac7164998fca6c01/FLAG897b355cc [2022-12-14 10:15:36,425 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/data/d3d11f35e/a0762ca1c572404dac7164998fca6c01 [2022-12-14 10:15:36,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:15:36,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:15:36,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:15:36,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:15:36,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:15:36,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:15:36" (1/1) ... [2022-12-14 10:15:36,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1adc05e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:36, skipping insertion in model container [2022-12-14 10:15:36,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:15:36" (1/1) ... [2022-12-14 10:15:36,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:15:36,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:15:36,728 WARN L237 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_418f1a07-bb8f-414d-adf0-fdc581920fbc/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2022-12-14 10:15:36,733 WARN L237 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_418f1a07-bb8f-414d-adf0-fdc581920fbc/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2022-12-14 10:15:37,281 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 10:15:37,351 WARN L623 FunctionHandler]: Unknown extern function my_memmove [2022-12-14 10:15:37,353 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,354 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,354 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,355 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,356 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,357 WARN L623 FunctionHandler]: Unknown extern function my_memmove [2022-12-14 10:15:37,368 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,369 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,371 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,371 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,373 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,374 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,375 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,375 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,434 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:15:37,434 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:15:37,435 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:15:37,438 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 10:15:37,439 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 10:15:37,439 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 10:15:37,639 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 10:15:37,640 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 10:15:37,640 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 10:15:37,641 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 10:15:37,642 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 10:15:37,643 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 10:15:37,643 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 10:15:37,644 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 10:15:37,644 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 10:15:37,644 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 10:15:37,645 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 10:15:37,761 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,766 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,797 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:15:37,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:15:37,820 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:15:37,829 WARN L237 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_418f1a07-bb8f-414d-adf0-fdc581920fbc/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2022-12-14 10:15:37,830 WARN L237 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_418f1a07-bb8f-414d-adf0-fdc581920fbc/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2022-12-14 10:15:37,851 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 10:15:37,860 WARN L623 FunctionHandler]: Unknown extern function my_memmove [2022-12-14 10:15:37,860 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,861 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,861 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,861 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,862 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,862 WARN L623 FunctionHandler]: Unknown extern function my_memmove [2022-12-14 10:15:37,866 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,866 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,867 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,867 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,868 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,869 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,869 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,869 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,873 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:15:37,874 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:15:37,874 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:15:37,876 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 10:15:37,877 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 10:15:37,877 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 10:15:37,890 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 10:15:37,891 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 10:15:37,891 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 10:15:37,892 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 10:15:37,892 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 10:15:37,893 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 10:15:37,893 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 10:15:37,894 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 10:15:37,894 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 10:15:37,894 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 10:15:37,894 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 10:15:37,923 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,926 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:15:37,939 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:15:37,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:15:38,064 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:15:38,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38 WrapperNode [2022-12-14 10:15:38,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:15:38,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:15:38,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:15:38,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:15:38,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (1/1) ... [2022-12-14 10:15:38,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (1/1) ... [2022-12-14 10:15:38,146 INFO L138 Inliner]: procedures = 691, calls = 1683, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 683 [2022-12-14 10:15:38,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:15:38,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:15:38,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:15:38,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:15:38,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (1/1) ... [2022-12-14 10:15:38,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (1/1) ... [2022-12-14 10:15:38,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (1/1) ... [2022-12-14 10:15:38,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (1/1) ... [2022-12-14 10:15:38,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (1/1) ... [2022-12-14 10:15:38,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (1/1) ... [2022-12-14 10:15:38,184 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (1/1) ... [2022-12-14 10:15:38,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (1/1) ... [2022-12-14 10:15:38,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:15:38,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:15:38,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:15:38,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:15:38,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (1/1) ... [2022-12-14 10:15:38,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:15:38,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:38,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:15:38,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:15:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2022-12-14 10:15:38,251 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2022-12-14 10:15:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:15:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-12-14 10:15:38,251 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-12-14 10:15:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-12-14 10:15:38,251 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-12-14 10:15:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 10:15:38,251 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 10:15:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:15:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-14 10:15:38,252 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-14 10:15:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:15:38,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:15:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:15:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:15:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:15:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:15:38,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:15:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 10:15:38,252 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 10:15:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-14 10:15:38,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-14 10:15:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-12-14 10:15:38,253 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-12-14 10:15:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-12-14 10:15:38,253 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-12-14 10:15:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 10:15:38,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 10:15:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:15:38,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:15:38,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:15:38,254 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 10:15:38,254 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 10:15:38,254 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-12-14 10:15:38,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-12-14 10:15:38,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:15:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2022-12-14 10:15:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2022-12-14 10:15:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2022-12-14 10:15:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2022-12-14 10:15:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-12-14 10:15:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-12-14 10:15:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:15:38,471 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:15:38,473 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:15:39,171 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:15:39,302 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:15:39,302 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:15:39,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:15:39 BoogieIcfgContainer [2022-12-14 10:15:39,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:15:39,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:15:39,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:15:39,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:15:39,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:15:36" (1/3) ... [2022-12-14 10:15:39,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e1c05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:15:39, skipping insertion in model container [2022-12-14 10:15:39,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:38" (2/3) ... [2022-12-14 10:15:39,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e1c05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:15:39, skipping insertion in model container [2022-12-14 10:15:39,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:15:39" (3/3) ... [2022-12-14 10:15:39,312 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2022-12-14 10:15:39,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:15:39,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:15:39,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:15:39,366 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;@3518af10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:15:39,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:15:39,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 80 states have (on average 1.175) internal successors, (94), 81 states have internal predecessors, (94), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-12-14 10:15:39,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 10:15:39,376 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:39,377 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:39,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:39,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:39,381 INFO L85 PathProgramCache]: Analyzing trace with hash 898762310, now seen corresponding path program 1 times [2022-12-14 10:15:39,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:39,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477192141] [2022-12-14 10:15:39,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:39,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 10:15:39,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:39,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477192141] [2022-12-14 10:15:39,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477192141] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:15:39,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615790068] [2022-12-14 10:15:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:39,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:39,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:39,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:39,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:15:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:40,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:15:40,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 10:15:40,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:15:40,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615790068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:15:40,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:15:40,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 10:15:40,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257755497] [2022-12-14 10:15:40,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:15:40,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:15:40,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:40,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:15:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:15:40,387 INFO L87 Difference]: Start difference. First operand has 155 states, 80 states have (on average 1.175) internal successors, (94), 81 states have internal predecessors, (94), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:15:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:40,852 INFO L93 Difference]: Finished difference Result 281 states and 414 transitions. [2022-12-14 10:15:40,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:15:40,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 67 [2022-12-14 10:15:40,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:40,861 INFO L225 Difference]: With dead ends: 281 [2022-12-14 10:15:40,861 INFO L226 Difference]: Without dead ends: 155 [2022-12-14 10:15:40,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:15:40,867 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 29 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:40,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 593 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:15:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-14 10:15:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-12-14 10:15:40,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 80 states have (on average 1.1625) internal successors, (93), 82 states have internal predecessors, (93), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (66), 56 states have call predecessors, (66), 56 states have call successors, (66) [2022-12-14 10:15:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 216 transitions. [2022-12-14 10:15:40,909 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 216 transitions. Word has length 67 [2022-12-14 10:15:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:40,909 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 216 transitions. [2022-12-14 10:15:40,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:15:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 216 transitions. [2022-12-14 10:15:40,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 10:15:40,912 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:40,912 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:40,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:15:41,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 10:15:41,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:41,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:41,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1465909422, now seen corresponding path program 1 times [2022-12-14 10:15:41,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:41,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392457092] [2022-12-14 10:15:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:41,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:41,179 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:15:41,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858272531] [2022-12-14 10:15:41,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:41,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:41,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:41,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:41,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:15:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:41,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 2248 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:15:41,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-14 10:15:41,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:15:41,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392457092] [2022-12-14 10:15:41,575 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:15:41,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858272531] [2022-12-14 10:15:41,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858272531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:15:41,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:15:41,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:15:41,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787062305] [2022-12-14 10:15:41,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:15:41,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:15:41,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:41,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:15:41,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:15:41,577 INFO L87 Difference]: Start difference. First operand 155 states and 216 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-14 10:15:41,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:41,999 INFO L93 Difference]: Finished difference Result 270 states and 380 transitions. [2022-12-14 10:15:41,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:15:41,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 76 [2022-12-14 10:15:42,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:42,001 INFO L225 Difference]: With dead ends: 270 [2022-12-14 10:15:42,001 INFO L226 Difference]: Without dead ends: 155 [2022-12-14 10:15:42,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:15:42,003 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 65 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:42,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 823 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:15:42,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-14 10:15:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-12-14 10:15:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 80 states have (on average 1.1625) internal successors, (93), 82 states have internal predecessors, (93), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2022-12-14 10:15:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 213 transitions. [2022-12-14 10:15:42,014 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 213 transitions. Word has length 76 [2022-12-14 10:15:42,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:42,015 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 213 transitions. [2022-12-14 10:15:42,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-14 10:15:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 213 transitions. [2022-12-14 10:15:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 10:15:42,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:42,017 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:42,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:15:42,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:42,219 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:42,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:42,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1589297384, now seen corresponding path program 2 times [2022-12-14 10:15:42,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:42,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405262258] [2022-12-14 10:15:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:42,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:42,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:15:42,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017787705] [2022-12-14 10:15:42,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:15:42,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:42,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:42,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:42,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:15:42,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 10:15:42,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:15:42,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:15:42,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 10:15:42,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:15:42,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:42,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405262258] [2022-12-14 10:15:42,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:15:42,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017787705] [2022-12-14 10:15:42,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017787705] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:15:42,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:15:42,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:15:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685806630] [2022-12-14 10:15:42,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:15:42,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:15:42,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:42,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:15:42,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:15:42,759 INFO L87 Difference]: Start difference. First operand 155 states and 213 transitions. Second operand has 5 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 10:15:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:43,076 INFO L93 Difference]: Finished difference Result 268 states and 375 transitions. [2022-12-14 10:15:43,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:15:43,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 85 [2022-12-14 10:15:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:43,079 INFO L225 Difference]: With dead ends: 268 [2022-12-14 10:15:43,079 INFO L226 Difference]: Without dead ends: 155 [2022-12-14 10:15:43,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:15:43,081 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:43,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 687 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:15:43,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-14 10:15:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-12-14 10:15:43,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 80 states have (on average 1.1625) internal successors, (93), 82 states have internal predecessors, (93), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2022-12-14 10:15:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 212 transitions. [2022-12-14 10:15:43,091 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 212 transitions. Word has length 85 [2022-12-14 10:15:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:43,091 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 212 transitions. [2022-12-14 10:15:43,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 10:15:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 212 transitions. [2022-12-14 10:15:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 10:15:43,092 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:43,092 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:43,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:15:43,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:43,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:43,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:43,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1347781824, now seen corresponding path program 3 times [2022-12-14 10:15:43,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:43,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274246633] [2022-12-14 10:15:43,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:43,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:43,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:15:43,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605587153] [2022-12-14 10:15:43,358 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 10:15:43,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:43,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:43,360 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:43,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:15:43,714 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 10:15:43,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:15:43,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:15:43,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 10:15:43,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:15:43,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:43,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274246633] [2022-12-14 10:15:43,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:15:43,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605587153] [2022-12-14 10:15:43,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605587153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:15:43,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:15:43,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:15:43,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809660411] [2022-12-14 10:15:43,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:15:43,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:15:43,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:43,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:15:43,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:15:43,793 INFO L87 Difference]: Start difference. First operand 155 states and 212 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-14 10:15:44,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:44,286 INFO L93 Difference]: Finished difference Result 277 states and 384 transitions. [2022-12-14 10:15:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:15:44,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 94 [2022-12-14 10:15:44,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:44,289 INFO L225 Difference]: With dead ends: 277 [2022-12-14 10:15:44,289 INFO L226 Difference]: Without dead ends: 165 [2022-12-14 10:15:44,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:15:44,291 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 69 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:44,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1124 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:15:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-12-14 10:15:44,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-12-14 10:15:44,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 84 states have (on average 1.1547619047619047) internal successors, (97), 86 states have internal predecessors, (97), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2022-12-14 10:15:44,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 226 transitions. [2022-12-14 10:15:44,301 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 226 transitions. Word has length 94 [2022-12-14 10:15:44,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:44,302 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 226 transitions. [2022-12-14 10:15:44,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-14 10:15:44,302 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 226 transitions. [2022-12-14 10:15:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 10:15:44,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:44,303 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:44,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:15:44,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:44,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:44,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:44,506 INFO L85 PathProgramCache]: Analyzing trace with hash 409547344, now seen corresponding path program 1 times [2022-12-14 10:15:44,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:44,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230020355] [2022-12-14 10:15:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:44,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:44,615 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:15:44,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704147517] [2022-12-14 10:15:44,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:44,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:44,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:44,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:44,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_418f1a07-bb8f-414d-adf0-fdc581920fbc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:15:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:45,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 373 conjunts are in the unsatisfiable core [2022-12-14 10:15:45,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:45,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:15:46,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-12-14 10:15:46,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:46,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 10:15:46,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:46,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 10:15:47,571 INFO L321 Elim1Store]: treesize reduction 57, result has 27.8 percent of original size [2022-12-14 10:15:47,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 49 [2022-12-14 10:15:47,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-12-14 10:15:47,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 10:15:47,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 10:15:47,870 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-12-14 10:15:47,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-12-14 10:15:48,502 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_428 Int) (|v___CPROVER_overflow_mult_~#c~1.base_29| Int)) (and (= 0 (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_29|)) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_29| v_ArrVal_428)))) (exists ((v_ArrVal_429 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_429)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_431 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_431) |c_#memory_int|)) (exists ((v_ArrVal_430 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_430)) |c_#memory_$Pointer$.offset|))) is different from true [2022-12-14 10:15:49,069 INFO L321 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-12-14 10:15:49,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 69 [2022-12-14 10:15:49,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 10:15:49,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 10:15:49,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 10:16:01,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:16:01,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:16:01,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:16:01,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:16:01,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:16:01,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 394 treesize of output 576 [2022-12-14 10:16:01,791 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:16:01,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 276 treesize of output 422 [2022-12-14 10:16:01,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 419 [2022-12-14 10:16:02,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 379