./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 e04fb08f 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_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/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_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0 --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-e04fb08 [2022-11-16 15:54:56,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:54:56,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:54:56,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:54:56,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:54:56,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:54:56,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:54:56,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:54:56,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:54:56,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:54:56,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:54:56,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:54:56,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:54:56,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:54:56,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:54:56,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:54:56,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:54:56,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:54:56,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:54:56,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:54:56,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:54:56,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:54:56,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:54:56,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:54:56,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:54:56,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:54:56,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:54:56,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:54:56,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:54:56,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:54:56,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:54:56,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:54:56,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:54:56,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:54:56,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:54:56,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:54:56,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:54:56,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:54:56,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:54:56,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:54:56,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:54:56,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 15:54:56,460 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:54:56,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:54:56,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:54:56,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:54:56,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:54:56,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:54:56,463 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:54:56,463 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:54:56,463 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:54:56,463 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:54:56,464 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:54:56,464 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:54:56,464 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:54:56,464 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:54:56,465 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:54:56,465 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:54:56,465 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:54:56,465 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:54:56,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:54:56,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:54:56,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:54:56,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:54:56,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:54:56,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:54:56,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:54:56,468 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:54:56,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:54:56,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:54:56,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:54:56,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:54:56,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:54:56,470 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:54:56,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:54:56,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:54:56,471 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:54:56,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:54:56,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:54:56,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:54:56,471 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_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2022-11-16 15:54:56,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:54:56,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:54:56,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:54:56,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:54:56,812 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:54:56,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2022-11-16 15:54:56,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/data/ed0801575/e253ca15adaa43338beea4b7ac318c40/FLAGabfcc5ee5 [2022-11-16 15:54:57,944 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:54:57,945 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2022-11-16 15:54:57,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/data/ed0801575/e253ca15adaa43338beea4b7ac318c40/FLAGabfcc5ee5 [2022-11-16 15:54:58,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/data/ed0801575/e253ca15adaa43338beea4b7ac318c40 [2022-11-16 15:54:58,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:54:58,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:54:58,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:54:58,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:54:58,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:54:58,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:54:58" (1/1) ... [2022-11-16 15:54:58,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f77907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:58, skipping insertion in model container [2022-11-16 15:54:58,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:54:58" (1/1) ... [2022-11-16 15:54:58,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:54:58,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:54:58,849 WARN L229 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_4a630e37-97e2-46b7-9b5b-ee3878378c18/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2022-11-16 15:54:58,858 WARN L229 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_4a630e37-97e2-46b7-9b5b-ee3878378c18/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2022-11-16 15:54:59,762 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 15:54:59,832 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,833 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,833 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,834 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,836 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,851 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,852 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,854 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,855 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,857 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,858 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,859 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:54:59,859 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,290 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 15:55:00,292 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 15:55:00,293 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 15:55:00,295 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 15:55:00,297 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 15:55:00,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 15:55:00,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 15:55:00,299 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 15:55:00,300 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 15:55:00,301 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 15:55:00,448 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,457 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:55:00,616 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:55:00,645 WARN L229 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_4a630e37-97e2-46b7-9b5b-ee3878378c18/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2022-11-16 15:55:00,653 WARN L229 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_4a630e37-97e2-46b7-9b5b-ee3878378c18/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2022-11-16 15:55:00,718 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 15:55:00,734 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,734 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,735 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,735 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,736 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,743 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,744 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,745 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,745 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,747 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,747 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,748 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,748 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,783 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 15:55:00,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 15:55:00,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 15:55:00,786 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 15:55:00,788 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 15:55:00,788 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 15:55:00,789 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 15:55:00,790 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 15:55:00,790 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 15:55:00,795 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 15:55:00,843 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,857 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 15:55:00,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:55:01,163 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:55:01,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01 WrapperNode [2022-11-16 15:55:01,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:55:01,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:55:01,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:55:01,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:55:01,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2022-11-16 15:55:01,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2022-11-16 15:55:01,317 INFO L138 Inliner]: procedures = 691, calls = 1684, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 684 [2022-11-16 15:55:01,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:55:01,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:55:01,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:55:01,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:55:01,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2022-11-16 15:55:01,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2022-11-16 15:55:01,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2022-11-16 15:55:01,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2022-11-16 15:55:01,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2022-11-16 15:55:01,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2022-11-16 15:55:01,378 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2022-11-16 15:55:01,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2022-11-16 15:55:01,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:55:01,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:55:01,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:55:01,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:55:01,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2022-11-16 15:55:01,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:55:01,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:55:01,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:55:01,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:55:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2022-11-16 15:55:01,515 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2022-11-16 15:55:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 15:55:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-16 15:55:01,516 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-16 15:55:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-16 15:55:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-16 15:55:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 15:55:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 15:55:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 15:55:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-16 15:55:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-16 15:55:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 15:55:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 15:55:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 15:55:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:55:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 15:55:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:55:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:55:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 15:55:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 15:55:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-16 15:55:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-16 15:55:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-16 15:55:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-16 15:55:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-16 15:55:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-16 15:55:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 15:55:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 15:55:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 15:55:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 15:55:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 15:55:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 15:55:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 15:55:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-16 15:55:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-16 15:55:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 15:55:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2022-11-16 15:55:01,526 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2022-11-16 15:55:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2022-11-16 15:55:01,527 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2022-11-16 15:55:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-16 15:55:01,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-16 15:55:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 15:55:01,954 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:55:01,957 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:55:03,475 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:55:03,698 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:55:03,699 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 15:55:03,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:55:03 BoogieIcfgContainer [2022-11-16 15:55:03,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:55:03,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:55:03,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:55:03,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:55:03,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:54:58" (1/3) ... [2022-11-16 15:55:03,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609de269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:55:03, skipping insertion in model container [2022-11-16 15:55:03,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (2/3) ... [2022-11-16 15:55:03,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609de269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:55:03, skipping insertion in model container [2022-11-16 15:55:03,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:55:03" (3/3) ... [2022-11-16 15:55:03,726 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2022-11-16 15:55:03,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:55:03,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:55:03,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:55:03,858 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;@3a20fffd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:55:03,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:55:03,862 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) [2022-11-16 15:55:03,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 15:55:03,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:55:03,880 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] [2022-11-16 15:55:03,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:55:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:55:03,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1395494391, now seen corresponding path program 1 times [2022-11-16 15:55:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:55:03,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088269597] [2022-11-16 15:55:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:03,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:55:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:55:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-16 15:55:05,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:55:05,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088269597] [2022-11-16 15:55:05,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088269597] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:55:05,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525163323] [2022-11-16 15:55:05,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:05,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:55:05,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:55:05,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:55:05,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 15:55:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:55:05,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 2120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 15:55:05,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:55:06,019 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-16 15:55:06,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:55:06,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525163323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:55:06,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 15:55:06,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-16 15:55:06,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368646024] [2022-11-16 15:55:06,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:55:06,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 15:55:06,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:55:06,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 15:55:06,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 15:55:06,088 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) [2022-11-16 15:55:06,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:55:06,838 INFO L93 Difference]: Finished difference Result 281 states and 414 transitions. [2022-11-16 15:55:06,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 15:55:06,842 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 [2022-11-16 15:55:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:55:06,861 INFO L225 Difference]: With dead ends: 281 [2022-11-16 15:55:06,861 INFO L226 Difference]: Without dead ends: 155 [2022-11-16 15:55:06,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 15:55:06,881 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 29 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 15:55:06,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 593 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 15:55:06,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-16 15:55:06,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-11-16 15:55:06,975 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) [2022-11-16 15:55:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 216 transitions. [2022-11-16 15:55:06,983 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 216 transitions. Word has length 67 [2022-11-16 15:55:06,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:55:06,984 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 216 transitions. [2022-11-16 15:55:06,984 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) [2022-11-16 15:55:06,984 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 216 transitions. [2022-11-16 15:55:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 15:55:06,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:55:06,992 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] [2022-11-16 15:55:07,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 15:55:07,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 15:55:07,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:55:07,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:55:07,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2016367126, now seen corresponding path program 1 times [2022-11-16 15:55:07,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:55:07,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587478198] [2022-11-16 15:55:07,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:07,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:55:07,335 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:55:07,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795887161] [2022-11-16 15:55:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:07,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:55:07,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:55:07,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:55:07,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 15:55:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:55:07,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 2252 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 15:55:07,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:55:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-16 15:55:08,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:55:08,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:55:08,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587478198] [2022-11-16 15:55:08,110 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:55:08,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795887161] [2022-11-16 15:55:08,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795887161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:55:08,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:55:08,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 15:55:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296669622] [2022-11-16 15:55:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:55:08,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 15:55:08,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:55:08,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 15:55:08,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:55:08,116 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) [2022-11-16 15:55:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:55:08,947 INFO L93 Difference]: Finished difference Result 270 states and 380 transitions. [2022-11-16 15:55:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 15:55:08,948 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 [2022-11-16 15:55:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:55:08,950 INFO L225 Difference]: With dead ends: 270 [2022-11-16 15:55:08,950 INFO L226 Difference]: Without dead ends: 155 [2022-11-16 15:55:08,951 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 [2022-11-16 15:55:08,953 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 65 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 15:55:08,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 823 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 15:55:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-16 15:55:08,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-11-16 15:55:08,970 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) [2022-11-16 15:55:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 213 transitions. [2022-11-16 15:55:08,972 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 213 transitions. Word has length 76 [2022-11-16 15:55:08,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:55:08,973 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 213 transitions. [2022-11-16 15:55:08,973 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) [2022-11-16 15:55:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 213 transitions. [2022-11-16 15:55:08,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 15:55:08,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:55:08,976 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] [2022-11-16 15:55:08,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 15:55:09,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 15:55:09,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:55:09,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:55:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash 214627117, now seen corresponding path program 2 times [2022-11-16 15:55:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:55:09,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345649672] [2022-11-16 15:55:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:55:09,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:55:09,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284415363] [2022-11-16 15:55:09,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 15:55:09,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:55:09,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:55:09,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:55:09,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 15:55:09,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 15:55:09,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:55:09,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1843 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 15:55:09,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:55:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 15:55:09,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:55:09,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:55:09,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345649672] [2022-11-16 15:55:09,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:55:09,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284415363] [2022-11-16 15:55:09,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284415363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:55:09,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:55:09,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:55:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754144088] [2022-11-16 15:55:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:55:09,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 15:55:09,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:55:09,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 15:55:09,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:55:09,924 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) [2022-11-16 15:55:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:55:10,343 INFO L93 Difference]: Finished difference Result 268 states and 375 transitions. [2022-11-16 15:55:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 15:55:10,344 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 [2022-11-16 15:55:10,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:55:10,353 INFO L225 Difference]: With dead ends: 268 [2022-11-16 15:55:10,353 INFO L226 Difference]: Without dead ends: 155 [2022-11-16 15:55:10,354 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 [2022-11-16 15:55:10,359 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 15:55:10,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 687 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 15:55:10,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-16 15:55:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-11-16 15:55:10,399 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) [2022-11-16 15:55:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 212 transitions. [2022-11-16 15:55:10,402 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 212 transitions. Word has length 85 [2022-11-16 15:55:10,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:55:10,404 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 212 transitions. [2022-11-16 15:55:10,404 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) [2022-11-16 15:55:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 212 transitions. [2022-11-16 15:55:10,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 15:55:10,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:55:10,409 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] [2022-11-16 15:55:10,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 15:55:10,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:55:10,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:55:10,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:55:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1757082170, now seen corresponding path program 3 times [2022-11-16 15:55:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:55:10,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326247006] [2022-11-16 15:55:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:10,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:55:10,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:55:10,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870919292] [2022-11-16 15:55:10,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 15:55:10,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:55:10,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:55:10,710 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:55:10,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 15:55:11,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 15:55:11,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:55:11,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 2516 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 15:55:11,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:55:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 15:55:11,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:55:11,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:55:11,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326247006] [2022-11-16 15:55:11,516 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:55:11,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870919292] [2022-11-16 15:55:11,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870919292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:55:11,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:55:11,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 15:55:11,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996079541] [2022-11-16 15:55:11,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:55:11,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 15:55:11,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:55:11,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 15:55:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 15:55:11,521 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) [2022-11-16 15:55:12,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:55:12,447 INFO L93 Difference]: Finished difference Result 277 states and 384 transitions. [2022-11-16 15:55:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 15:55:12,448 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 [2022-11-16 15:55:12,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:55:12,450 INFO L225 Difference]: With dead ends: 277 [2022-11-16 15:55:12,450 INFO L226 Difference]: Without dead ends: 165 [2022-11-16 15:55:12,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-16 15:55:12,452 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 69 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 15:55:12,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1124 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 15:55:12,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-16 15:55:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-11-16 15:55:12,467 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) [2022-11-16 15:55:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 226 transitions. [2022-11-16 15:55:12,469 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 226 transitions. Word has length 94 [2022-11-16 15:55:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:55:12,470 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 226 transitions. [2022-11-16 15:55:12,470 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) [2022-11-16 15:55:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 226 transitions. [2022-11-16 15:55:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 15:55:12,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:55:12,472 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] [2022-11-16 15:55:12,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 15:55:12,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:55:12,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:55:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:55:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -434979561, now seen corresponding path program 1 times [2022-11-16 15:55:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:55:12,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473751478] [2022-11-16 15:55:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:12,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:55:12,775 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:55:12,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106930690] [2022-11-16 15:55:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:12,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:55:12,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:55:12,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:55:12,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a630e37-97e2-46b7-9b5b-ee3878378c18/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 15:55:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:55:14,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 2648 conjuncts, 318 conjunts are in the unsatisfiable core [2022-11-16 15:55:14,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:55:14,605 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 [2022-11-16 15:55:15,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 15:55:15,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 15:55:15,737 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 [2022-11-16 15:55:15,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 15:55:15,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 15:55:16,751 INFO L321 Elim1Store]: treesize reduction 57, result has 27.8 percent of original size [2022-11-16 15:55:16,751 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 [2022-11-16 15:55:16,765 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 [2022-11-16 15:55:17,077 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 15:55:17,078 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 [2022-11-16 15:55:18,644 INFO L321 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-11-16 15:55:18,644 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 [2022-11-16 15:55:18,678 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 [2022-11-16 15:55:23,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:23,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:55:23,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:23,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:55:23,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:23,568 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 15:55:23,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 155 treesize of output 200 [2022-11-16 15:56:49,889 WARN L233 SmtUtils]: Spent 1.44m on a formula simplification. DAG size of input: 47 DAG size of output: 39 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 15:56:49,890 INFO L321 Elim1Store]: treesize reduction 16, result has 78.1 percent of original size [2022-11-16 15:56:49,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 80 treesize of output 126 [2022-11-16 16:03:29,515 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-16 16:03:29,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 97 [2022-11-16 16:03:31,639 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 17 [2022-11-16 16:03:31,783 INFO L321 Elim1Store]: treesize reduction 32, result has 52.2 percent of original size [2022-11-16 16:03:31,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 116 treesize of output 121 [2022-11-16 16:03:31,980 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 17 [2022-11-16 16:03:32,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:32,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:32,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:32,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:32,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 48 [2022-11-16 16:03:32,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 37 [2022-11-16 16:03:32,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:32,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:32,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:32,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:03:32,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:32,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:32,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 62 [2022-11-16 16:06:09,562 WARN L233 SmtUtils]: Spent 24.34s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:08:06,213 WARN L833 $PredicateComparison]: unable to prove that (or (exists ((v_aws_array_list_length_~list.base_BEFORE_CALL_7 Int) (|v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6| Int) (|v_aws_array_list_is_valid_~#required_size~0.base_19| Int)) (let ((.cse5 (select |c_#memory_int| v_aws_array_list_length_~list.base_BEFORE_CALL_7))) (let ((.cse1 (mod (select .cse5 8) 18446744073709551616)) (.cse0 (select |c_#memory_int| |v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6|)) (.cse3 (select .cse5 24)) (.cse2 (select (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_19|) 0)) (.cse4 (select .cse5 16))) (and (= (mod (select .cse0 8) 18446744073709551616) 0) (= .cse1 0) (<= (mod .cse2 18446744073709551616) .cse1) (not (= v_aws_array_list_length_~list.base_BEFORE_CALL_7 |v_aws_array_list_is_valid_~#required_size~0.base_19|)) (not (= (mod .cse3 18446744073709551616) 0)) (not (= |v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6| |v_aws_array_list_is_valid_~#required_size~0.base_19|)) (= 0 (mod (select .cse0 16) 18446744073709551616)) (= (* .cse4 .cse3) .cse2) (= (mod .cse4 18446744073709551616) 0))))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int)) (v_aws_array_list_length_~list.base_BEFORE_CALL_7 Int) (v_prenex_1 Int) (|v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6| Int) (|v_aws_array_list_is_valid_~#required_size~0.base_19| Int)) (let ((.cse18 (store (store |c_#memory_int| v_prenex_1 v_DerPreprocessor_3) |v_aws_array_list_is_valid_~#required_size~0.base_19| v_DerPreprocessor_4))) (let ((.cse15 (select |c_#memory_int| v_aws_array_list_length_~list.base_BEFORE_CALL_7)) (.cse13 (select .cse18 v_aws_array_list_length_~list.base_BEFORE_CALL_7))) (let ((.cse16 (select .cse13 16)) (.cse12 (select .cse13 24)) (.cse11 (select .cse18 |v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6|)) (.cse14 (select .cse15 8)) (.cse7 (select |c_#memory_int| |v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6|))) (let ((.cse10 (select .cse7 8)) (.cse9 (mod .cse14 18446744073709551616)) (.cse6 (select .cse11 16)) (.cse8 (select (select |c_#memory_int| v_prenex_1) 0)) (.cse17 (* .cse16 .cse12))) (and (= .cse6 (select .cse7 16)) (not (<= (mod .cse8 18446744073709551616) .cse9)) (= (mod .cse10 18446744073709551616) 0) (not (= v_prenex_1 |v_aws_array_list_is_valid_~#required_size~0.base_19|)) (= .cse10 (select .cse11 8)) (= .cse9 0) (= (mod .cse6 18446744073709551616) 0) (not (= v_aws_array_list_length_~list.base_BEFORE_CALL_7 v_prenex_1)) (not (= |v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6| v_prenex_1)) (not (= (mod .cse12 18446744073709551616) 0)) (= (select .cse13 8) .cse14) (= (select .cse15 24) .cse12) (= (mod .cse16 18446744073709551616) 0) (= (select v_DerPreprocessor_4 0) .cse17) (= .cse16 (select .cse15 16)) (= .cse8 .cse17))))))) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int)) (v_aws_array_list_length_~list.base_BEFORE_CALL_7 Int) (v_prenex_1 Int) (|v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6| Int) (|v_aws_array_list_is_valid_~#required_size~0.base_19| Int)) (let ((.cse19 (store (store |c_#memory_int| v_prenex_1 v_DerPreprocessor_1) |v_aws_array_list_is_valid_~#required_size~0.base_19| v_DerPreprocessor_2))) (let ((.cse27 (select |c_#memory_int| v_aws_array_list_length_~list.base_BEFORE_CALL_7)) (.cse24 (select .cse19 v_aws_array_list_length_~list.base_BEFORE_CALL_7))) (let ((.cse23 (select .cse24 24)) (.cse22 (select .cse24 16)) (.cse25 (select .cse27 8))) (let ((.cse21 (mod .cse25 18446744073709551616)) (.cse20 (select (select |c_#memory_int| v_prenex_1) 0)) (.cse26 (* .cse23 .cse22))) (and (= (mod (select (select .cse19 |v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6|) 16) 18446744073709551616) 0) (not (<= (mod .cse20 18446744073709551616) .cse21)) (= (mod (select (select |c_#memory_int| |v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6|) 8) 18446744073709551616) 0) (= .cse21 0) (= (mod .cse22 18446744073709551616) 0) (not (= v_aws_array_list_length_~list.base_BEFORE_CALL_7 v_prenex_1)) (not (= |v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6| v_prenex_1)) (not (= (mod .cse23 18446744073709551616) 0)) (not (= |v_aws_array_list_pop_front_~list#1.base_BEFORE_CALL_6| |v_aws_array_list_is_valid_~#required_size~0.base_19|)) (= (select .cse19 v_prenex_1) v_DerPreprocessor_1) (= (select .cse24 8) .cse25) (= (select v_DerPreprocessor_2 0) .cse26) (= .cse20 .cse26) (= (select .cse27 16) .cse22) (= (select .cse27 24) .cse23)))))))) is different from false