./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_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_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8 --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --- 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 12:52:24,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:52:24,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:52:24,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:52:24,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:52:24,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:52:24,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:52:24,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:52:24,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:52:24,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:52:24,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:52:24,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:52:24,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:52:24,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:52:24,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:52:24,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:52:24,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:52:24,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:52:24,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:52:24,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:52:24,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:52:24,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:52:24,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:52:24,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:52:24,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:52:24,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:52:24,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:52:24,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:52:24,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:52:24,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:52:24,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:52:24,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:52:24,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:52:24,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:52:24,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:52:24,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:52:24,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:52:24,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:52:24,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:52:24,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:52:24,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:52:24,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:52:24,781 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:52:24,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:52:24,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:52:24,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:52:24,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:52:24,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:52:24,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:52:24,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:52:24,784 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:52:24,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:52:24,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:52:24,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:52:24,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:52:24,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:52:24,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:52:24,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:52:24,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:52:24,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:52:24,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:52:24,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:52:24,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:52:24,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:52:24,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:52:24,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:52:24,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:52:24,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:52:24,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:52:24,788 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:52:24,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:52:24,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:52:24,789 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_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 [2022-11-16 12:52:25,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:52:25,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:52:25,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:52:25,132 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:52:25,133 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:52:25,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2022-11-16 12:52:25,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/data/17ead4541/d1a54db1634b49a1a65d4cbfe8fd205b/FLAG40ef8703c [2022-11-16 12:52:26,071 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:52:26,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2022-11-16 12:52:26,119 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/data/17ead4541/d1a54db1634b49a1a65d4cbfe8fd205b/FLAG40ef8703c [2022-11-16 12:52:26,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/data/17ead4541/d1a54db1634b49a1a65d4cbfe8fd205b [2022-11-16 12:52:26,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:52:26,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:52:26,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:52:26,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:52:26,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:52:26,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:52:26" (1/1) ... [2022-11-16 12:52:26,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2112e4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:26, skipping insertion in model container [2022-11-16 12:52:26,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:52:26" (1/1) ... [2022-11-16 12:52:26,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:52:26,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:52:26,979 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_9b403e05-fa4e-46ad-875d-200692fcd312/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2022-11-16 12:52:26,985 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_9b403e05-fa4e-46ad-875d-200692fcd312/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2022-11-16 12:52:27,719 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:52:27,779 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,780 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,780 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,781 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,782 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,794 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,795 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,797 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,798 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,800 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,801 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,801 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:27,802 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,137 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:52:28,138 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:52:28,139 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:52:28,140 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:52:28,142 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:52:28,143 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:52:28,143 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:52:28,144 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:52:28,145 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:52:28,146 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:52:28,313 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,325 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:52:28,436 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:52:28,450 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_9b403e05-fa4e-46ad-875d-200692fcd312/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2022-11-16 12:52:28,451 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_9b403e05-fa4e-46ad-875d-200692fcd312/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2022-11-16 12:52:28,489 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:52:28,506 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,507 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,507 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,508 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,509 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,517 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,517 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,519 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,519 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,520 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,521 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,522 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,522 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,558 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:52:28,559 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:52:28,560 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:52:28,561 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:52:28,567 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:52:28,568 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:52:28,569 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:52:28,569 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:52:28,571 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:52:28,571 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:52:28,619 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,633 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:52:28,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:52:28,999 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:52:28,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28 WrapperNode [2022-11-16 12:52:28,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:52:29,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:52:29,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:52:29,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:52:29,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (1/1) ... [2022-11-16 12:52:29,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (1/1) ... [2022-11-16 12:52:29,191 INFO L138 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 591 [2022-11-16 12:52:29,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:52:29,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:52:29,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:52:29,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:52:29,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (1/1) ... [2022-11-16 12:52:29,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (1/1) ... [2022-11-16 12:52:29,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (1/1) ... [2022-11-16 12:52:29,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (1/1) ... [2022-11-16 12:52:29,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (1/1) ... [2022-11-16 12:52:29,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (1/1) ... [2022-11-16 12:52:29,303 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (1/1) ... [2022-11-16 12:52:29,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (1/1) ... [2022-11-16 12:52:29,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:52:29,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:52:29,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:52:29,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:52:29,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (1/1) ... [2022-11-16 12:52:29,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:52:29,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:52:29,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:52:29,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:52:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:52:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-16 12:52:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-16 12:52:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-16 12:52:29,425 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-16 12:52:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 12:52:29,426 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 12:52:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:52:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-16 12:52:29,426 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-16 12:52:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:52:29,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:52:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:52:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:52:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:52:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:52:29,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:52:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 12:52:29,429 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 12:52:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-16 12:52:29,429 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-16 12:52:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-16 12:52:29,429 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-16 12:52:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-16 12:52:29,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-16 12:52:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 12:52:29,431 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 12:52:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:52:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:52:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:52:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 12:52:29,432 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 12:52:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-16 12:52:29,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-16 12:52:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:52:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:52:29,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:52:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:52:29,810 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:52:29,812 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:52:30,836 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:52:30,852 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:52:30,853 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:52:30,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:52:30 BoogieIcfgContainer [2022-11-16 12:52:30,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:52:30,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:52:30,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:52:30,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:52:30,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:52:26" (1/3) ... [2022-11-16 12:52:30,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2233fc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:52:30, skipping insertion in model container [2022-11-16 12:52:30,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:28" (2/3) ... [2022-11-16 12:52:30,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2233fc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:52:30, skipping insertion in model container [2022-11-16 12:52:30,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:52:30" (3/3) ... [2022-11-16 12:52:30,867 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2022-11-16 12:52:30,885 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:52:30,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:52:30,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:52:30,973 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=PETRI_NET, 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;@2d2c0c81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:52:30,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:52:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-16 12:52:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 12:52:30,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:30,992 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-16 12:52:30,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:52:31,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:31,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1468528252, now seen corresponding path program 1 times [2022-11-16 12:52:31,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:31,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002506003] [2022-11-16 12:52:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:31,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:52:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:52:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:52:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:52:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:52:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:52:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:52:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:52:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 12:52:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:52:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 12:52:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 12:52:31,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:31,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002506003] [2022-11-16 12:52:31,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002506003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:31,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:31,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:52:31,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488339071] [2022-11-16 12:52:31,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:31,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:52:31,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:32,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:52:32,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:52:32,005 INFO L87 Difference]: Start difference. First operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:52:32,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:32,591 INFO L93 Difference]: Finished difference Result 248 states and 337 transitions. [2022-11-16 12:52:32,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:52:32,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2022-11-16 12:52:32,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:32,603 INFO L225 Difference]: With dead ends: 248 [2022-11-16 12:52:32,603 INFO L226 Difference]: Without dead ends: 123 [2022-11-16 12:52:32,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:52:32,614 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 41 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:32,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 163 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:52:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-16 12:52:32,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2022-11-16 12:52:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 72 states have internal predecessors, (82), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-16 12:52:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2022-11-16 12:52:32,706 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 71 [2022-11-16 12:52:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:32,709 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2022-11-16 12:52:32,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:52:32,710 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2022-11-16 12:52:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 12:52:32,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:32,716 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-16 12:52:32,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:52:32,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:52:32,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:32,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1288118090, now seen corresponding path program 1 times [2022-11-16 12:52:32,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:32,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742263097] [2022-11-16 12:52:32,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:32,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:52:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:52:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:52:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:52:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:52:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:52:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:52:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:52:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 12:52:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:52:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 12:52:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 12:52:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:33,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742263097] [2022-11-16 12:52:33,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742263097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:52:33,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429557993] [2022-11-16 12:52:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:33,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:52:33,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:52:33,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:52:33,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:52:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:52:33,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 12:52:34,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:34,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429557993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:34,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:52:34,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-16 12:52:34,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187573782] [2022-11-16 12:52:34,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:34,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:52:34,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:34,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:52:34,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:52:34,023 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:52:34,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:34,293 INFO L93 Difference]: Finished difference Result 193 states and 240 transitions. [2022-11-16 12:52:34,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:52:34,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 71 [2022-11-16 12:52:34,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:34,297 INFO L225 Difference]: With dead ends: 193 [2022-11-16 12:52:34,297 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 12:52:34,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:52:34,306 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 149 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:34,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 403 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:52:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 12:52:34,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-16 12:52:34,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 74 states have internal predecessors, (83), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 28 states have call predecessors, (30), 28 states have call successors, (30) [2022-11-16 12:52:34,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2022-11-16 12:52:34,334 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 71 [2022-11-16 12:52:34,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:34,334 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2022-11-16 12:52:34,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:52:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2022-11-16 12:52:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 12:52:34,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:34,343 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:34,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:52:34,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:52:34,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:52:34,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1724800482, now seen corresponding path program 1 times [2022-11-16 12:52:34,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:34,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811457055] [2022-11-16 12:52:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:34,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:34,621 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:52:34,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551077803] [2022-11-16 12:52:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:34,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:52:34,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:52:34,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:52:34,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:52:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:35,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:52:35,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 12:52:35,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:35,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:35,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811457055] [2022-11-16 12:52:35,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:52:35,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551077803] [2022-11-16 12:52:35,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551077803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:35,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:35,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:52:35,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63271204] [2022-11-16 12:52:35,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:35,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:52:35,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:35,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:52:35,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:52:35,258 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:52:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:35,725 INFO L93 Difference]: Finished difference Result 182 states and 221 transitions. [2022-11-16 12:52:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:52:35,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-11-16 12:52:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:35,730 INFO L225 Difference]: With dead ends: 182 [2022-11-16 12:52:35,730 INFO L226 Difference]: Without dead ends: 114 [2022-11-16 12:52:35,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:52:35,732 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 151 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:35,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 565 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:52:35,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-16 12:52:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-11-16 12:52:35,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 72 states have internal predecessors, (81), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-16 12:52:35,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2022-11-16 12:52:35,757 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 86 [2022-11-16 12:52:35,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:35,758 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2022-11-16 12:52:35,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:52:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2022-11-16 12:52:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 12:52:35,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:35,763 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 12:52:35,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:35,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:52:35,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:52:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:35,977 INFO L85 PathProgramCache]: Analyzing trace with hash -146566572, now seen corresponding path program 1 times [2022-11-16 12:52:35,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:35,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359417382] [2022-11-16 12:52:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:35,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:36,105 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:52:36,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657296716] [2022-11-16 12:52:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:36,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:52:36,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:52:36,110 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:52:36,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:52:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:36,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 212 conjunts are in the unsatisfiable core [2022-11-16 12:52:36,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:36,953 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 12:52:37,473 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:52:37,473 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 32 treesize of output 37 [2022-11-16 12:52:37,563 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:52:37,563 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 12:52:38,411 INFO L321 Elim1Store]: treesize reduction 44, result has 47.0 percent of original size [2022-11-16 12:52:38,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 48 [2022-11-16 12:52:57,745 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 81 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:52:59,731 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:52:59,732 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 191 treesize of output 253 [2022-11-16 12:53:38,883 WARN L233 SmtUtils]: Spent 8.44s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:53:46,943 INFO L321 Elim1Store]: treesize reduction 72, result has 28.7 percent of original size [2022-11-16 12:53:46,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 251 treesize of output 369 [2022-11-16 12:53:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 59 refuted. 3 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:53:48,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:53:57,341 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:54:03,920 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:54:10,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:54:10,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359417382] [2022-11-16 12:54:10,826 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:54:10,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657296716] [2022-11-16 12:54:10,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657296716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:54:10,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:54:10,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2022-11-16 12:54:10,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413212973] [2022-11-16 12:54:10,827 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:54:10,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-16 12:54:10,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:54:10,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-16 12:54:10,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1812, Unknown=45, NotChecked=0, Total=1980 [2022-11-16 12:54:10,831 INFO L87 Difference]: Start difference. First operand 114 states and 139 transitions. Second operand has 41 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 12 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-16 12:54:33,991 WARN L233 SmtUtils]: Spent 21.46s on a formula simplification. DAG size of input: 71 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:56:45,028 WARN L233 SmtUtils]: Spent 2.06m on a formula simplification. DAG size of input: 112 DAG size of output: 112 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:58:55,730 WARN L233 SmtUtils]: Spent 2.06m on a formula simplification. DAG size of input: 106 DAG size of output: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 13:01:15,652 WARN L233 SmtUtils]: Spent 2.08m on a formula simplification. DAG size of input: 107 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 13:04:24,983 WARN L233 SmtUtils]: Spent 2.93m on a formula simplification. DAG size of input: 113 DAG size of output: 110 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 13:04:56,685 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 13:04:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:04:58,530 INFO L93 Difference]: Finished difference Result 185 states and 234 transitions. [2022-11-16 13:04:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 13:04:58,531 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 12 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) Word has length 116 [2022-11-16 13:04:58,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:04:58,534 INFO L225 Difference]: With dead ends: 185 [2022-11-16 13:04:58,534 INFO L226 Difference]: Without dead ends: 183 [2022-11-16 13:04:58,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 74 SyntacticMatches, 7 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1346 ImplicationChecksByTransitivity, 683.5s TimeCoverageRelationStatistics Valid=329, Invalid=4870, Unknown=57, NotChecked=0, Total=5256 [2022-11-16 13:04:58,537 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 97 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1755 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 13:04:58,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1767 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 879 Invalid, 0 Unknown, 1755 Unchecked, 1.3s Time] [2022-11-16 13:04:58,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-16 13:04:58,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 177. [2022-11-16 13:04:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 118 states have internal predecessors, (133), 40 states have call successors, (40), 20 states have call predecessors, (40), 21 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2022-11-16 13:04:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 222 transitions. [2022-11-16 13:04:58,563 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 222 transitions. Word has length 116 [2022-11-16 13:04:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:04:58,564 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 222 transitions. [2022-11-16 13:04:58,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 12 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-16 13:04:58,564 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 222 transitions. [2022-11-16 13:04:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 13:04:58,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:04:58,566 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 13:04:58,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 13:04:58,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:04:58,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:04:58,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:04:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1114350678, now seen corresponding path program 1 times [2022-11-16 13:04:58,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:04:58,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110646961] [2022-11-16 13:04:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:04:58,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:04:58,908 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:04:58,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682964002] [2022-11-16 13:04:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:04:58,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:04:58,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:04:58,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:04:58,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 13:04:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:04:59,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-16 13:04:59,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:04:59,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:04:59,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2022-11-16 13:04:59,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:04:59,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 13:04:59,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2022-11-16 13:05:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 13:05:00,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:05:00,995 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 13:05:00,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-11-16 13:05:01,006 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-16 13:05:01,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 13:05:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-16 13:05:01,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:05:01,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110646961] [2022-11-16 13:05:01,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:05:01,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682964002] [2022-11-16 13:05:01,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682964002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 13:05:01,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 13:05:01,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-11-16 13:05:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802102208] [2022-11-16 13:05:01,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 13:05:01,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 13:05:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:05:01,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 13:05:01,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-11-16 13:05:01,070 INFO L87 Difference]: Start difference. First operand 177 states and 222 transitions. Second operand has 26 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 9 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-11-16 13:05:02,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:05:02,961 INFO L93 Difference]: Finished difference Result 314 states and 412 transitions. [2022-11-16 13:05:02,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 13:05:02,961 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 9 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) Word has length 116 [2022-11-16 13:05:02,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:05:02,964 INFO L225 Difference]: With dead ends: 314 [2022-11-16 13:05:02,964 INFO L226 Difference]: Without dead ends: 237 [2022-11-16 13:05:02,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 13:05:02,966 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 136 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 13:05:02,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1560 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 887 Invalid, 0 Unknown, 91 Unchecked, 1.3s Time] [2022-11-16 13:05:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-16 13:05:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 205. [2022-11-16 13:05:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 132 states have (on average 1.1363636363636365) internal successors, (150), 136 states have internal predecessors, (150), 47 states have call successors, (47), 23 states have call predecessors, (47), 25 states have return successors, (69), 45 states have call predecessors, (69), 45 states have call successors, (69) [2022-11-16 13:05:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 266 transitions. [2022-11-16 13:05:03,000 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 266 transitions. Word has length 116 [2022-11-16 13:05:03,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:05:03,001 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 266 transitions. [2022-11-16 13:05:03,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 9 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-11-16 13:05:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 266 transitions. [2022-11-16 13:05:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-16 13:05:03,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:05:03,003 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2022-11-16 13:05:03,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 13:05:03,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:03,215 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:05:03,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:05:03,216 INFO L85 PathProgramCache]: Analyzing trace with hash 637355589, now seen corresponding path program 1 times [2022-11-16 13:05:03,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:05:03,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457450731] [2022-11-16 13:05:03,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:03,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:05:03,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:05:03,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884716255] [2022-11-16 13:05:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:03,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:03,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:05:03,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:05:03,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 13:05:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:05:03,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 2526 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 13:05:03,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:05:03,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 13:05:04,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 13:05:04,307 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_480 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_480)))) is different from true [2022-11-16 13:05:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-16 13:05:12,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 13:05:12,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:05:12,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457450731] [2022-11-16 13:05:12,620 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:05:12,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884716255] [2022-11-16 13:05:12,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884716255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 13:05:12,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 13:05:12,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 13:05:12,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790037357] [2022-11-16 13:05:12,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 13:05:12,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 13:05:12,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:05:12,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 13:05:12,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=239, Unknown=21, NotChecked=32, Total=342 [2022-11-16 13:05:12,622 INFO L87 Difference]: Start difference. First operand 205 states and 266 transitions. Second operand has 19 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 13:05:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:05:13,583 INFO L93 Difference]: Finished difference Result 349 states and 480 transitions. [2022-11-16 13:05:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 13:05:13,584 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 122 [2022-11-16 13:05:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:05:13,587 INFO L225 Difference]: With dead ends: 349 [2022-11-16 13:05:13,587 INFO L226 Difference]: Without dead ends: 241 [2022-11-16 13:05:13,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=68, Invalid=377, Unknown=21, NotChecked=40, Total=506 [2022-11-16 13:05:13,590 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 89 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 669 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 13:05:13,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 770 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 578 Invalid, 0 Unknown, 669 Unchecked, 0.8s Time] [2022-11-16 13:05:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-16 13:05:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 205. [2022-11-16 13:05:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 132 states have (on average 1.1363636363636365) internal successors, (150), 136 states have internal predecessors, (150), 47 states have call successors, (47), 23 states have call predecessors, (47), 25 states have return successors, (68), 45 states have call predecessors, (68), 45 states have call successors, (68) [2022-11-16 13:05:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 265 transitions. [2022-11-16 13:05:13,630 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 265 transitions. Word has length 122 [2022-11-16 13:05:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:05:13,630 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 265 transitions. [2022-11-16 13:05:13,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 13:05:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 265 transitions. [2022-11-16 13:05:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-16 13:05:13,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:05:13,633 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:05:13,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 13:05:13,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:13,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:05:13,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:05:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1291305116, now seen corresponding path program 1 times [2022-11-16 13:05:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:05:13,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116135059] [2022-11-16 13:05:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:05:13,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:05:13,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688210497] [2022-11-16 13:05:13,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:13,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:13,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:05:13,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:05:13,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 13:05:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:05:14,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 13:05:14,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:05:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-16 13:05:14,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 13:05:14,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:05:14,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116135059] [2022-11-16 13:05:14,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:05:14,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688210497] [2022-11-16 13:05:14,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688210497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 13:05:14,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 13:05:14,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 13:05:14,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264021343] [2022-11-16 13:05:14,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 13:05:14,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 13:05:14,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:05:14,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 13:05:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 13:05:14,491 INFO L87 Difference]: Start difference. First operand 205 states and 265 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 13:05:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:05:14,546 INFO L93 Difference]: Finished difference Result 318 states and 426 transitions. [2022-11-16 13:05:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 13:05:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 122 [2022-11-16 13:05:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:05:14,549 INFO L225 Difference]: With dead ends: 318 [2022-11-16 13:05:14,549 INFO L226 Difference]: Without dead ends: 210 [2022-11-16 13:05:14,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 13:05:14,550 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 7 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 13:05:14,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 409 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 13:05:14,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-16 13:05:14,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2022-11-16 13:05:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 138 states have internal predecessors, (152), 47 states have call successors, (47), 23 states have call predecessors, (47), 25 states have return successors, (68), 45 states have call predecessors, (68), 45 states have call successors, (68) [2022-11-16 13:05:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 267 transitions. [2022-11-16 13:05:14,592 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 267 transitions. Word has length 122 [2022-11-16 13:05:14,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:05:14,594 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 267 transitions. [2022-11-16 13:05:14,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 13:05:14,594 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 267 transitions. [2022-11-16 13:05:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 13:05:14,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:05:14,598 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:05:14,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 13:05:14,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:14,807 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:05:14,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:05:14,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1868050624, now seen corresponding path program 1 times [2022-11-16 13:05:14,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:05:14,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549600939] [2022-11-16 13:05:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:14,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:05:14,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:05:14,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484431100] [2022-11-16 13:05:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:14,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:14,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:05:14,902 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:05:14,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 13:05:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:05:15,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-16 13:05:15,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:05:16,105 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_665 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_665) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_666 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_666))))) is different from true [2022-11-16 13:05:16,597 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-16 13:05:16,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2022-11-16 13:05:16,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-11-16 13:05:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 53 proven. 14 refuted. 4 times theorem prover too weak. 23 trivial. 3 not checked. [2022-11-16 13:05:25,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:05:26,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:05:26,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549600939] [2022-11-16 13:05:26,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:05:26,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484431100] [2022-11-16 13:05:26,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484431100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:05:26,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 13:05:26,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-11-16 13:05:26,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805156662] [2022-11-16 13:05:26,091 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 13:05:26,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 13:05:26,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:05:26,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 13:05:26,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=650, Unknown=23, NotChecked=52, Total=812 [2022-11-16 13:05:26,093 INFO L87 Difference]: Start difference. First operand 207 states and 267 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-16 13:05:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:05:28,521 INFO L93 Difference]: Finished difference Result 370 states and 511 transitions. [2022-11-16 13:05:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 13:05:28,522 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) Word has length 124 [2022-11-16 13:05:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:05:28,524 INFO L225 Difference]: With dead ends: 370 [2022-11-16 13:05:28,525 INFO L226 Difference]: Without dead ends: 291 [2022-11-16 13:05:28,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=185, Invalid=1113, Unknown=38, NotChecked=70, Total=1406 [2022-11-16 13:05:28,526 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 149 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1293 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 13:05:28,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 963 Invalid, 2615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1262 Invalid, 0 Unknown, 1293 Unchecked, 1.8s Time] [2022-11-16 13:05:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-16 13:05:28,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 251. [2022-11-16 13:05:28,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 172 states have internal predecessors, (188), 53 states have call successors, (53), 26 states have call predecessors, (53), 31 states have return successors, (101), 52 states have call predecessors, (101), 51 states have call successors, (101) [2022-11-16 13:05:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 342 transitions. [2022-11-16 13:05:28,558 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 342 transitions. Word has length 124 [2022-11-16 13:05:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:05:28,558 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 342 transitions. [2022-11-16 13:05:28,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-16 13:05:28,559 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 342 transitions. [2022-11-16 13:05:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-16 13:05:28,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:05:28,561 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:05:28,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 13:05:28,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 13:05:28,771 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:05:28,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:05:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1969623887, now seen corresponding path program 1 times [2022-11-16 13:05:28,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:05:28,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589302811] [2022-11-16 13:05:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:28,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:05:28,848 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:05:28,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491638517] [2022-11-16 13:05:28,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:28,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:28,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:05:28,850 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:05:28,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 13:05:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:05:29,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 13:05:29,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:05:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 13:05:29,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 13:05:29,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:05:29,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589302811] [2022-11-16 13:05:29,602 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:05:29,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491638517] [2022-11-16 13:05:29,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491638517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 13:05:29,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 13:05:29,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 13:05:29,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502096362] [2022-11-16 13:05:29,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 13:05:29,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 13:05:29,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:05:29,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 13:05:29,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-16 13:05:29,604 INFO L87 Difference]: Start difference. First operand 251 states and 342 transitions. Second operand has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 4 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-16 13:05:29,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:05:29,952 INFO L93 Difference]: Finished difference Result 366 states and 500 transitions. [2022-11-16 13:05:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 13:05:29,953 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 4 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 136 [2022-11-16 13:05:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:05:29,955 INFO L225 Difference]: With dead ends: 366 [2022-11-16 13:05:29,955 INFO L226 Difference]: Without dead ends: 251 [2022-11-16 13:05:29,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-16 13:05:29,956 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 12 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 13:05:29,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1664 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 13:05:29,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-16 13:05:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 248. [2022-11-16 13:05:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 173 states have internal predecessors, (188), 50 states have call successors, (50), 26 states have call predecessors, (50), 31 states have return successors, (93), 48 states have call predecessors, (93), 48 states have call successors, (93) [2022-11-16 13:05:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 331 transitions. [2022-11-16 13:05:29,984 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 331 transitions. Word has length 136 [2022-11-16 13:05:29,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:05:29,984 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 331 transitions. [2022-11-16 13:05:29,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 4 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-16 13:05:29,985 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 331 transitions. [2022-11-16 13:05:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 13:05:29,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:05:29,987 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:05:30,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 13:05:30,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:30,197 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:05:30,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:05:30,197 INFO L85 PathProgramCache]: Analyzing trace with hash 461023472, now seen corresponding path program 1 times [2022-11-16 13:05:30,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:05:30,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754872123] [2022-11-16 13:05:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:05:30,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:05:30,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775084405] [2022-11-16 13:05:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:30,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:30,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:05:30,273 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:05:30,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 13:05:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:05:30,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 13:05:30,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:05:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 13:05:30,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 13:05:30,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:05:30,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754872123] [2022-11-16 13:05:30,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:05:30,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775084405] [2022-11-16 13:05:30,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775084405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 13:05:30,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 13:05:30,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 13:05:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535167387] [2022-11-16 13:05:30,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 13:05:30,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 13:05:30,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:05:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 13:05:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 13:05:30,867 INFO L87 Difference]: Start difference. First operand 248 states and 331 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 13:05:31,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:05:31,117 INFO L93 Difference]: Finished difference Result 363 states and 497 transitions. [2022-11-16 13:05:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 13:05:31,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2022-11-16 13:05:31,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:05:31,120 INFO L225 Difference]: With dead ends: 363 [2022-11-16 13:05:31,120 INFO L226 Difference]: Without dead ends: 255 [2022-11-16 13:05:31,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 13:05:31,121 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 16 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 13:05:31,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 475 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 13:05:31,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-16 13:05:31,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2022-11-16 13:05:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 167 states have (on average 1.125748502994012) internal successors, (188), 174 states have internal predecessors, (188), 50 states have call successors, (50), 26 states have call predecessors, (50), 31 states have return successors, (93), 48 states have call predecessors, (93), 48 states have call successors, (93) [2022-11-16 13:05:31,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 331 transitions. [2022-11-16 13:05:31,148 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 331 transitions. Word has length 118 [2022-11-16 13:05:31,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:05:31,149 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 331 transitions. [2022-11-16 13:05:31,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 13:05:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 331 transitions. [2022-11-16 13:05:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 13:05:31,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:05:31,169 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:05:31,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 13:05:31,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 13:05:31,384 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:05:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:05:31,385 INFO L85 PathProgramCache]: Analyzing trace with hash 275669676, now seen corresponding path program 1 times [2022-11-16 13:05:31,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:05:31,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760693582] [2022-11-16 13:05:31,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:31,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:05:31,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:05:31,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899682141] [2022-11-16 13:05:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:31,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:31,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:05:31,450 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:05:31,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 13:05:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:05:31,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 13:05:31,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:05:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 13:05:32,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 13:05:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:05:32,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760693582] [2022-11-16 13:05:32,079 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:05:32,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899682141] [2022-11-16 13:05:32,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899682141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 13:05:32,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 13:05:32,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 13:05:32,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863046482] [2022-11-16 13:05:32,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 13:05:32,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 13:05:32,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:05:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 13:05:32,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 13:05:32,082 INFO L87 Difference]: Start difference. First operand 249 states and 331 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 13:05:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:05:32,356 INFO L93 Difference]: Finished difference Result 362 states and 491 transitions. [2022-11-16 13:05:32,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 13:05:32,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2022-11-16 13:05:32,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:05:32,358 INFO L225 Difference]: With dead ends: 362 [2022-11-16 13:05:32,359 INFO L226 Difference]: Without dead ends: 245 [2022-11-16 13:05:32,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 13:05:32,360 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 10 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 13:05:32,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 503 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 13:05:32,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-16 13:05:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2022-11-16 13:05:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 161 states have (on average 1.1118012422360248) internal successors, (179), 167 states have internal predecessors, (179), 50 states have call successors, (50), 26 states have call predecessors, (50), 30 states have return successors, (91), 48 states have call predecessors, (91), 48 states have call successors, (91) [2022-11-16 13:05:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 320 transitions. [2022-11-16 13:05:32,387 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 320 transitions. Word has length 118 [2022-11-16 13:05:32,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:05:32,388 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 320 transitions. [2022-11-16 13:05:32,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 13:05:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 320 transitions. [2022-11-16 13:05:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 13:05:32,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:05:32,390 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:05:32,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 13:05:32,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 13:05:32,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:05:32,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:05:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash -568335826, now seen corresponding path program 1 times [2022-11-16 13:05:32,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:05:32,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322574604] [2022-11-16 13:05:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:32,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:05:32,664 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:05:32,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175849143] [2022-11-16 13:05:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:32,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:32,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:05:32,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:05:32,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 13:05:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:05:33,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-16 13:05:33,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:05:34,528 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1091 (Array Int Int)) (v_ArrVal_1088 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1087 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1088)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1087)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1091) |c_#memory_int|))) is different from true [2022-11-16 13:05:35,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:05:35,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:35,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:05:35,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2022-11-16 13:05:35,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:05:35,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:35,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:05:35,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 13:05:35,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:05:35,737 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 13:05:35,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 34 [2022-11-16 13:05:35,752 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 10 treesize of output 6 [2022-11-16 13:05:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 74 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 13:05:35,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:05:37,358 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_aws_array_list_length_~list.offset 8)) (.cse1 (+ 32 c_aws_array_list_length_~list.offset))) (and (forall ((v_ArrVal_1111 (Array Int Int)) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_43| Int)) (or (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_43| v_ArrVal_1111) c_aws_array_list_length_~list.base) .cse0) 18446744073709551616) 0) (forall ((v_ArrVal_1110 Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_43| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_43|) 0 v_ArrVal_1110)) c_aws_array_list_length_~list.base) .cse1) 0)))) (forall ((v_ArrVal_1111 (Array Int Int)) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_43| Int)) (or (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_43| v_ArrVal_1111) c_aws_array_list_length_~list.base) .cse0) 18446744073709551616) 0) (forall ((v_ArrVal_1109 Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_43| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_43|) 0 v_ArrVal_1109)) c_aws_array_list_length_~list.base) .cse1) 0)))))) is different from false [2022-11-16 13:05:37,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:05:37,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322574604] [2022-11-16 13:05:37,361 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:05:37,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175849143] [2022-11-16 13:05:37,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175849143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:05:37,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 13:05:37,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-16 13:05:37,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47311086] [2022-11-16 13:05:37,361 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 13:05:37,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 13:05:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:05:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 13:05:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=960, Unknown=9, NotChecked=126, Total=1190 [2022-11-16 13:05:37,363 INFO L87 Difference]: Start difference. First operand 242 states and 320 transitions. Second operand has 29 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 10 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-16 13:05:40,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:05:40,925 INFO L93 Difference]: Finished difference Result 341 states and 446 transitions. [2022-11-16 13:05:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 13:05:40,926 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 10 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) Word has length 118 [2022-11-16 13:05:40,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:05:40,928 INFO L225 Difference]: With dead ends: 341 [2022-11-16 13:05:40,928 INFO L226 Difference]: Without dead ends: 249 [2022-11-16 13:05:40,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=240, Invalid=2298, Unknown=20, NotChecked=198, Total=2756 [2022-11-16 13:05:40,930 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 102 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1042 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 13:05:40,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 941 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1362 Invalid, 0 Unknown, 1042 Unchecked, 2.0s Time] [2022-11-16 13:05:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-16 13:05:40,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 242. [2022-11-16 13:05:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 161 states have (on average 1.1055900621118013) internal successors, (178), 167 states have internal predecessors, (178), 50 states have call successors, (50), 26 states have call predecessors, (50), 30 states have return successors, (87), 48 states have call predecessors, (87), 48 states have call successors, (87) [2022-11-16 13:05:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 315 transitions. [2022-11-16 13:05:40,961 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 315 transitions. Word has length 118 [2022-11-16 13:05:40,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:05:40,962 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 315 transitions. [2022-11-16 13:05:40,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 10 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-16 13:05:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 315 transitions. [2022-11-16 13:05:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 13:05:40,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:05:40,965 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:05:40,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 13:05:41,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:41,175 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:05:41,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:05:41,175 INFO L85 PathProgramCache]: Analyzing trace with hash -293675669, now seen corresponding path program 1 times [2022-11-16 13:05:41,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:05:41,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192099852] [2022-11-16 13:05:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:41,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:05:41,242 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:05:41,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463621765] [2022-11-16 13:05:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:41,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:05:41,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:05:41,245 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:05:41,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 13:05:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:05:41,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-16 13:05:41,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:05:41,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 13:05:42,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 13:05:42,240 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1244 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1244)))) is different from true [2022-11-16 13:05:42,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:42,700 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 [2022-11-16 13:05:42,940 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 13:05:49,437 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1246 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1246)))) is different from true [2022-11-16 13:05:57,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:57,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:05:57,895 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-16 13:05:57,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-16 13:05:57,898 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 70 proven. 13 refuted. 4 times theorem prover too weak. 7 trivial. 3 not checked. [2022-11-16 13:05:57,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:06:00,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:06:00,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192099852] [2022-11-16 13:06:00,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:06:00,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463621765] [2022-11-16 13:06:00,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463621765] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:06:00,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 13:06:00,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-11-16 13:06:00,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654282665] [2022-11-16 13:06:00,327 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 13:06:00,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 13:06:00,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:06:00,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 13:06:00,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=857, Unknown=106, NotChecked=126, Total=1190 [2022-11-16 13:06:00,329 INFO L87 Difference]: Start difference. First operand 242 states and 315 transitions. Second operand has 34 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 13 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2022-11-16 13:06:00,980 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1244 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1244)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1246 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1246))))) is different from true [2022-11-16 13:06:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:06:08,511 INFO L93 Difference]: Finished difference Result 357 states and 453 transitions. [2022-11-16 13:06:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 13:06:08,512 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 13 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 124 [2022-11-16 13:06:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:06:08,514 INFO L225 Difference]: With dead ends: 357 [2022-11-16 13:06:08,514 INFO L226 Difference]: Without dead ends: 261 [2022-11-16 13:06:08,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=217, Invalid=2026, Unknown=121, NotChecked=288, Total=2652 [2022-11-16 13:06:08,516 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 123 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1191 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 13:06:08,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1082 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 783 Invalid, 0 Unknown, 1191 Unchecked, 0.9s Time] [2022-11-16 13:06:08,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-16 13:06:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2022-11-16 13:06:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 173 states have (on average 1.1098265895953756) internal successors, (192), 179 states have internal predecessors, (192), 54 states have call successors, (54), 29 states have call predecessors, (54), 32 states have return successors, (92), 51 states have call predecessors, (92), 52 states have call successors, (92) [2022-11-16 13:06:08,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 338 transitions. [2022-11-16 13:06:08,548 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 338 transitions. Word has length 124 [2022-11-16 13:06:08,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:06:08,548 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 338 transitions. [2022-11-16 13:06:08,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 13 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2022-11-16 13:06:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 338 transitions. [2022-11-16 13:06:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 13:06:08,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:06:08,551 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:06:08,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 13:06:08,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:06:08,768 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:06:08,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:06:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2023595590, now seen corresponding path program 1 times [2022-11-16 13:06:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:06:08,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113710678] [2022-11-16 13:06:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:06:08,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:06:08,841 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:06:08,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471142874] [2022-11-16 13:06:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:06:08,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:06:08,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:06:08,843 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:06:08,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 13:06:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:06:09,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-16 13:06:09,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:06:09,471 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 13:06:09,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:09,854 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 [2022-11-16 13:06:09,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:09,862 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 [2022-11-16 13:06:10,013 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1368 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1368) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1369 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1369) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 13:06:10,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:10,475 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 [2022-11-16 13:06:10,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:10,484 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 [2022-11-16 13:06:10,495 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 13:06:10,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 13:06:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 13:06:10,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:06:10,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:06:10,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113710678] [2022-11-16 13:06:10,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:06:10,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471142874] [2022-11-16 13:06:10,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471142874] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:06:10,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 13:06:10,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-16 13:06:10,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467679241] [2022-11-16 13:06:10,957 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 13:06:10,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 13:06:10,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:06:10,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 13:06:10,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=4, NotChecked=28, Total=272 [2022-11-16 13:06:10,958 INFO L87 Difference]: Start difference. First operand 260 states and 338 transitions. Second operand has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 5 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-16 13:06:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:06:11,515 INFO L93 Difference]: Finished difference Result 369 states and 472 transitions. [2022-11-16 13:06:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 13:06:11,516 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 5 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 118 [2022-11-16 13:06:11,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:06:11,518 INFO L225 Difference]: With dead ends: 369 [2022-11-16 13:06:11,518 INFO L226 Difference]: Without dead ends: 260 [2022-11-16 13:06:11,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 166 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=4, NotChecked=32, Total=342 [2022-11-16 13:06:11,520 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 98 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 769 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 13:06:11,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 462 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 349 Invalid, 0 Unknown, 769 Unchecked, 0.5s Time] [2022-11-16 13:06:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-16 13:06:11,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2022-11-16 13:06:11,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 173 states have (on average 1.1098265895953756) internal successors, (192), 179 states have internal predecessors, (192), 54 states have call successors, (54), 29 states have call predecessors, (54), 32 states have return successors, (91), 51 states have call predecessors, (91), 52 states have call successors, (91) [2022-11-16 13:06:11,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 337 transitions. [2022-11-16 13:06:11,549 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 337 transitions. Word has length 118 [2022-11-16 13:06:11,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:06:11,549 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 337 transitions. [2022-11-16 13:06:11,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 5 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-16 13:06:11,550 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 337 transitions. [2022-11-16 13:06:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-16 13:06:11,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:06:11,552 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:06:11,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 13:06:11,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:06:11,767 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:06:11,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:06:11,767 INFO L85 PathProgramCache]: Analyzing trace with hash 708411965, now seen corresponding path program 1 times [2022-11-16 13:06:11,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:06:11,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529834948] [2022-11-16 13:06:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:06:11,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:06:11,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:06:11,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824823576] [2022-11-16 13:06:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:06:11,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:06:11,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:06:11,843 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:06:11,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 13:06:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:06:12,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 2535 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-16 13:06:12,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:06:12,489 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 13:06:12,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 13:06:12,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-16 13:06:12,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2022-11-16 13:06:13,010 INFO L321 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-11-16 13:06:13,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 13:06:13,246 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_1500 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1500) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 13:06:13,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:13,608 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 28 treesize of output 28 [2022-11-16 13:06:13,636 INFO L321 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-11-16 13:06:13,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 13:06:27,974 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 16 treesize of output 8 [2022-11-16 13:06:27,978 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 18 treesize of output 10 [2022-11-16 13:06:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 66 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 13:06:28,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:06:28,454 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 42 treesize of output 30 [2022-11-16 13:06:28,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:06:28,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529834948] [2022-11-16 13:06:28,587 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:06:28,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824823576] [2022-11-16 13:06:28,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824823576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:06:28,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 13:06:28,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-11-16 13:06:28,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192099872] [2022-11-16 13:06:28,588 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 13:06:28,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 13:06:28,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:06:28,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 13:06:28,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=599, Unknown=10, NotChecked=50, Total=756 [2022-11-16 13:06:28,589 INFO L87 Difference]: Start difference. First operand 260 states and 337 transitions. Second operand has 25 states, 23 states have (on average 3.217391304347826) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-16 13:06:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:06:36,446 INFO L93 Difference]: Finished difference Result 392 states and 506 transitions. [2022-11-16 13:06:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 13:06:36,447 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.217391304347826) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 130 [2022-11-16 13:06:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:06:36,449 INFO L225 Difference]: With dead ends: 392 [2022-11-16 13:06:36,449 INFO L226 Difference]: Without dead ends: 289 [2022-11-16 13:06:36,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 173 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=164, Invalid=1150, Unknown=22, NotChecked=70, Total=1406 [2022-11-16 13:06:36,451 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 218 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1054 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 13:06:36,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 848 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 968 Invalid, 0 Unknown, 1054 Unchecked, 1.3s Time] [2022-11-16 13:06:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-16 13:06:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 267. [2022-11-16 13:06:36,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 178 states have (on average 1.1067415730337078) internal successors, (197), 183 states have internal predecessors, (197), 55 states have call successors, (55), 30 states have call predecessors, (55), 33 states have return successors, (92), 53 states have call predecessors, (92), 53 states have call successors, (92) [2022-11-16 13:06:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 344 transitions. [2022-11-16 13:06:36,486 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 344 transitions. Word has length 130 [2022-11-16 13:06:36,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:06:36,486 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 344 transitions. [2022-11-16 13:06:36,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.217391304347826) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-16 13:06:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 344 transitions. [2022-11-16 13:06:36,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 13:06:36,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:06:36,490 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:06:36,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 13:06:36,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 13:06:36,700 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:06:36,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:06:36,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1450594124, now seen corresponding path program 1 times [2022-11-16 13:06:36,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:06:36,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648775763] [2022-11-16 13:06:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:06:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:06:36,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:06:36,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697243513] [2022-11-16 13:06:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:06:36,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:06:36,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:06:36,770 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:06:36,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 13:06:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:06:37,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-16 13:06:37,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:06:37,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 13:06:37,692 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 [2022-11-16 13:06:37,967 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1605 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1604 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1605))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1604))))) is different from true [2022-11-16 13:06:38,672 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 41 treesize of output 33 [2022-11-16 13:06:38,684 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 24 treesize of output 16 [2022-11-16 13:06:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 13:06:38,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 13:06:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:06:38,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648775763] [2022-11-16 13:06:38,736 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:06:38,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697243513] [2022-11-16 13:06:38,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697243513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 13:06:38,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 13:06:38,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 13:06:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882888781] [2022-11-16 13:06:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 13:06:38,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 13:06:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:06:38,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 13:06:38,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=307, Unknown=25, NotChecked=36, Total=420 [2022-11-16 13:06:38,765 INFO L87 Difference]: Start difference. First operand 267 states and 344 transitions. Second operand has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 13:06:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:06:39,340 INFO L93 Difference]: Finished difference Result 402 states and 506 transitions. [2022-11-16 13:06:39,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 13:06:39,341 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) Word has length 124 [2022-11-16 13:06:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:06:39,343 INFO L225 Difference]: With dead ends: 402 [2022-11-16 13:06:39,343 INFO L226 Difference]: Without dead ends: 286 [2022-11-16 13:06:39,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=409, Unknown=34, NotChecked=42, Total=552 [2022-11-16 13:06:39,345 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 39 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 651 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 13:06:39,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1143 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 305 Invalid, 0 Unknown, 651 Unchecked, 0.4s Time] [2022-11-16 13:06:39,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-16 13:06:39,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2022-11-16 13:06:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 191 states have (on average 1.1047120418848169) internal successors, (211), 196 states have internal predecessors, (211), 58 states have call successors, (58), 33 states have call predecessors, (58), 36 states have return successors, (95), 56 states have call predecessors, (95), 56 states have call successors, (95) [2022-11-16 13:06:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 364 transitions. [2022-11-16 13:06:39,380 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 364 transitions. Word has length 124 [2022-11-16 13:06:39,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:06:39,380 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 364 transitions. [2022-11-16 13:06:39,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 13:06:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 364 transitions. [2022-11-16 13:06:39,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 13:06:39,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:06:39,383 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:06:39,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 13:06:39,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 13:06:39,598 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:06:39,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:06:39,599 INFO L85 PathProgramCache]: Analyzing trace with hash 967241581, now seen corresponding path program 1 times [2022-11-16 13:06:39,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:06:39,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673173502] [2022-11-16 13:06:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:06:39,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:06:39,677 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 13:06:39,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058864647] [2022-11-16 13:06:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:06:39,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:06:39,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:06:39,678 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:06:39,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b403e05-fa4e-46ad-875d-200692fcd312/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 13:06:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:06:40,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-16 13:06:40,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:06:40,350 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 13:06:40,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 13:06:40,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 13:06:40,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 13:06:40,852 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 13:06:40,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 13:06:41,075 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1741 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1741) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-16 13:06:41,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:41,545 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 31 treesize of output 19 [2022-11-16 13:06:41,555 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 13:06:41,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 13:07:14,308 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1742 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1742)))) is different from true [2022-11-16 13:07:22,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:07:22,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:07:22,816 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-16 13:07:22,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-16 13:07:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 25 refuted. 0 times theorem prover too weak. 7 trivial. 3 not checked. [2022-11-16 13:07:22,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:07:25,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:07:25,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673173502] [2022-11-16 13:07:25,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 13:07:25,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058864647] [2022-11-16 13:07:25,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058864647] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:07:25,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 13:07:25,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-11-16 13:07:25,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423645240] [2022-11-16 13:07:25,234 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 13:07:25,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 13:07:25,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:07:25,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 13:07:25,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=969, Unknown=65, NotChecked=130, Total=1260 [2022-11-16 13:07:25,236 INFO L87 Difference]: Start difference. First operand 286 states and 364 transitions. Second operand has 35 states, 32 states have (on average 2.53125) internal successors, (81), 29 states have internal predecessors, (81), 12 states have call successors, (20), 10 states have call predecessors, (20), 11 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18)