./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:28:02,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:28:02,709 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:28:02,715 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:28:02,716 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:28:02,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:28:02,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:28:02,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:28:02,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:28:02,746 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:28:02,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:28:02,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:28:02,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:28:02,749 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:28:02,750 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:28:02,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:28:02,751 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:28:02,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:28:02,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:28:02,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:28:02,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:28:02,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:28:02,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:28:02,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:28:02,755 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:28:02,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:28:02,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:28:02,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:28:02,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:28:02,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:28:02,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:28:02,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:28:02,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:28:02,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:28:02,778 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:28:02,778 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:28:02,778 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:28:02,779 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:28:02,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:28:02,779 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb [2023-11-21 22:28:03,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:28:03,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:28:03,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:28:03,137 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:28:03,137 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:28:03,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2023-11-21 22:28:06,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:28:06,848 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:28:06,849 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2023-11-21 22:28:06,897 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/data/ccda42065/4adb2feb23374bc0bda8f0b6be63f6d6/FLAG44c30afed [2023-11-21 22:28:06,921 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/data/ccda42065/4adb2feb23374bc0bda8f0b6be63f6d6 [2023-11-21 22:28:06,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:28:06,930 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:28:06,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:28:06,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:28:06,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:28:06,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:28:06" (1/1) ... [2023-11-21 22:28:06,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13702ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:06, skipping insertion in model container [2023-11-21 22:28:06,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:28:06" (1/1) ... [2023-11-21 22:28:07,064 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:28:07,392 WARN L240 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_7214ead0-44bf-404a-bb1b-fb5f15703c75/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4495,4508] [2023-11-21 22:28:07,402 WARN L240 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_7214ead0-44bf-404a-bb1b-fb5f15703c75/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4555,4568] [2023-11-21 22:28:08,519 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,520 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,521 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,522 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,524 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,539 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,540 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,542 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,543 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,545 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,547 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:08,548 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,054 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:28:09,058 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:28:09,060 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:28:09,062 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:28:09,070 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:28:09,071 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:28:09,072 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:28:09,073 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:28:09,078 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:28:09,080 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:28:09,313 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,320 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,396 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:28:09,448 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:28:09,468 WARN L240 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_7214ead0-44bf-404a-bb1b-fb5f15703c75/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4495,4508] [2023-11-21 22:28:09,469 WARN L240 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_7214ead0-44bf-404a-bb1b-fb5f15703c75/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4555,4568] [2023-11-21 22:28:09,558 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,559 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,559 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,560 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,561 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,587 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,590 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,593 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,595 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,596 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,596 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,597 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,680 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:28:09,681 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:28:09,691 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:28:09,692 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:28:09,693 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:28:09,694 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:28:09,695 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:28:09,695 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:28:09,698 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:28:09,698 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:28:09,739 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,746 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,753 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7769-7780] [2023-11-21 22:28:09,783 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,789 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:28:09,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:28:10,178 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,201 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,201 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,201 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,201 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,201 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,201 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,202 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,202 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,202 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,202 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,202 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,202 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,202 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,202 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:10,212 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:28:10,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10 WrapperNode [2023-11-21 22:28:10,214 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:28:10,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:28:10,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:28:10,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:28:10,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,447 INFO L138 Inliner]: procedures = 690, calls = 1683, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 657 [2023-11-21 22:28:10,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:28:10,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:28:10,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:28:10,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:28:10,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,468 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,609 INFO L187 HeapSplitter]: Split 314 memory accesses to 7 slices as follows [2, 55, 6, 236, 9, 3, 3] [2023-11-21 22:28:10,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,667 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,684 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:28:10,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:28:10,701 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:28:10,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:28:10,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (1/1) ... [2023-11-21 22:28:10,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:28:10,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:28:10,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:28:10,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:28:10,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:28:10,809 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-21 22:28:10,810 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-21 22:28:10,810 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-21 22:28:10,810 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-21 22:28:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 22:28:10,811 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 22:28:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:28:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:28:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:28:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:28:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 22:28:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-21 22:28:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-21 22:28:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 22:28:10,812 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 22:28:10,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:28:10,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:28:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:28:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:28:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 22:28:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 22:28:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 22:28:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 22:28:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-21 22:28:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-21 22:28:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-21 22:28:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-21 22:28:10,816 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-21 22:28:10,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:28:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:28:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 22:28:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 22:28:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-21 22:28:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-21 22:28:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-21 22:28:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-21 22:28:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-21 22:28:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-21 22:28:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-21 22:28:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-21 22:28:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:28:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:28:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-21 22:28:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-21 22:28:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:28:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 22:28:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 22:28:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 22:28:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 22:28:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-21 22:28:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-21 22:28:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-21 22:28:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-21 22:28:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-21 22:28:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-21 22:28:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-21 22:28:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-21 22:28:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-21 22:28:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-21 22:28:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-21 22:28:10,823 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-21 22:28:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-21 22:28:10,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-21 22:28:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:28:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:28:10,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:28:10,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:28:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:28:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-21 22:28:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-21 22:28:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-21 22:28:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-21 22:28:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:28:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:28:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:28:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:28:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:28:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:28:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:28:11,209 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:28:11,218 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:28:12,751 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:28:13,006 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:28:13,006 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:28:13,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:28:13 BoogieIcfgContainer [2023-11-21 22:28:13,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:28:13,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:28:13,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:28:13,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:28:13,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:28:06" (1/3) ... [2023-11-21 22:28:13,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a12796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:28:13, skipping insertion in model container [2023-11-21 22:28:13,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:10" (2/3) ... [2023-11-21 22:28:13,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a12796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:28:13, skipping insertion in model container [2023-11-21 22:28:13,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:28:13" (3/3) ... [2023-11-21 22:28:13,026 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_get_at_harness.i [2023-11-21 22:28:13,047 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:28:13,048 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:28:13,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:28:13,128 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=LoopHeads, 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;@324e074, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:28:13,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:28:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 78 states have internal predecessors, (91), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-21 22:28:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-21 22:28:13,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:28:13,152 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:13,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:28:13,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1844376759, now seen corresponding path program 1 times [2023-11-21 22:28:13,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:13,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040670052] [2023-11-21 22:28:13,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:13,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:28:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:28:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:28:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:28:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:28:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:28:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 22:28:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-21 22:28:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 22:28:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:28:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:28:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:28:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-21 22:28:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 22:28:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:14,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-21 22:28:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-21 22:28:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:15,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 22:28:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:15,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-21 22:28:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-21 22:28:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:15,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-21 22:28:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-21 22:28:15,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:15,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040670052] [2023-11-21 22:28:15,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040670052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:28:15,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250567075] [2023-11-21 22:28:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:15,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:28:15,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:28:15,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:28:15,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:28:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:15,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:28:15,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:28:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-21 22:28:15,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:28:15,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250567075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:15,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:28:15,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-21 22:28:15,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063340513] [2023-11-21 22:28:15,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:15,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:28:15,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:15,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:28:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:28:15,936 INFO L87 Difference]: Start difference. First operand has 147 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 78 states have internal predecessors, (91), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-21 22:28:16,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:28:16,502 INFO L93 Difference]: Finished difference Result 271 states and 380 transitions. [2023-11-21 22:28:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:28:16,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 95 [2023-11-21 22:28:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:28:16,516 INFO L225 Difference]: With dead ends: 271 [2023-11-21 22:28:16,516 INFO L226 Difference]: Without dead ends: 143 [2023-11-21 22:28:16,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:28:16,525 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 38 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:28:16,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 557 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:28:16,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-21 22:28:16,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-21 22:28:16,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 74 states have (on average 1.135135135135135) internal successors, (84), 76 states have internal predecessors, (84), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (55), 50 states have call predecessors, (55), 50 states have call successors, (55) [2023-11-21 22:28:16,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 191 transitions. [2023-11-21 22:28:16,589 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 191 transitions. Word has length 95 [2023-11-21 22:28:16,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:28:16,590 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 191 transitions. [2023-11-21 22:28:16,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-21 22:28:16,591 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 191 transitions. [2023-11-21 22:28:16,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-21 22:28:16,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:28:16,597 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:16,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:28:16,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-21 22:28:16,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:28:16,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:16,814 INFO L85 PathProgramCache]: Analyzing trace with hash -693974311, now seen corresponding path program 1 times [2023-11-21 22:28:16,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:16,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164513897] [2023-11-21 22:28:16,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:16,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:16,964 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:28:16,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338787378] [2023-11-21 22:28:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:16,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:28:16,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:28:16,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:28:16,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:28:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:17,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:28:17,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:28:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-21 22:28:17,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:28:17,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:17,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164513897] [2023-11-21 22:28:17,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:28:17,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338787378] [2023-11-21 22:28:17,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338787378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:17,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:17,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:28:17,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118123386] [2023-11-21 22:28:17,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:17,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:28:17,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:28:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:28:17,850 INFO L87 Difference]: Start difference. First operand 143 states and 191 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-21 22:28:18,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:28:18,355 INFO L93 Difference]: Finished difference Result 232 states and 309 transitions. [2023-11-21 22:28:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:28:18,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 113 [2023-11-21 22:28:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:28:18,359 INFO L225 Difference]: With dead ends: 232 [2023-11-21 22:28:18,359 INFO L226 Difference]: Without dead ends: 143 [2023-11-21 22:28:18,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:28:18,362 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 37 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:28:18,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 660 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:28:18,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-21 22:28:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-21 22:28:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 74 states have (on average 1.135135135135135) internal successors, (84), 76 states have internal predecessors, (84), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2023-11-21 22:28:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 188 transitions. [2023-11-21 22:28:18,383 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 188 transitions. Word has length 113 [2023-11-21 22:28:18,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:28:18,384 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 188 transitions. [2023-11-21 22:28:18,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-21 22:28:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 188 transitions. [2023-11-21 22:28:18,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-21 22:28:18,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:28:18,387 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:18,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:28:18,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:28:18,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:28:18,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:18,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2107284084, now seen corresponding path program 2 times [2023-11-21 22:28:18,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:18,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893850557] [2023-11-21 22:28:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:18,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:18,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:28:18,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681114352] [2023-11-21 22:28:18,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:28:18,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:28:18,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:28:18,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:28:18,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:28:19,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:28:19,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:28:19,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:28:19,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:28:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 22:28:19,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:28:19,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:19,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893850557] [2023-11-21 22:28:19,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:28:19,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681114352] [2023-11-21 22:28:19,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681114352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:19,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:19,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:28:19,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901221904] [2023-11-21 22:28:19,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:19,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:28:19,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:19,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:28:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:28:19,665 INFO L87 Difference]: Start difference. First operand 143 states and 188 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-21 22:28:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:28:20,330 INFO L93 Difference]: Finished difference Result 223 states and 290 transitions. [2023-11-21 22:28:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:28:20,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2023-11-21 22:28:20,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:28:20,339 INFO L225 Difference]: With dead ends: 223 [2023-11-21 22:28:20,340 INFO L226 Difference]: Without dead ends: 141 [2023-11-21 22:28:20,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:28:20,343 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 40 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:28:20,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 935 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:28:20,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-21 22:28:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-11-21 22:28:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 74 states have internal predecessors, (82), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-21 22:28:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 184 transitions. [2023-11-21 22:28:20,366 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 184 transitions. Word has length 122 [2023-11-21 22:28:20,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:28:20,367 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 184 transitions. [2023-11-21 22:28:20,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-21 22:28:20,368 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 184 transitions. [2023-11-21 22:28:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-21 22:28:20,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:28:20,371 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:20,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:28:20,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:28:20,596 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:28:20,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:20,596 INFO L85 PathProgramCache]: Analyzing trace with hash -535397868, now seen corresponding path program 1 times [2023-11-21 22:28:20,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:20,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617542111] [2023-11-21 22:28:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:20,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:20,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:28:20,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416064690] [2023-11-21 22:28:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:20,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:28:20,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:28:20,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:28:20,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:28:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:21,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 3445 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-21 22:28:21,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:28:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-21 22:28:21,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:28:21,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:21,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617542111] [2023-11-21 22:28:21,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:28:21,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416064690] [2023-11-21 22:28:21,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416064690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:21,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:21,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:28:21,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375400403] [2023-11-21 22:28:21,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:21,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:28:21,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:21,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:28:21,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:28:21,785 INFO L87 Difference]: Start difference. First operand 141 states and 184 transitions. Second operand has 9 states, 6 states have (on average 7.833333333333333) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-21 22:28:23,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:28:23,069 INFO L93 Difference]: Finished difference Result 241 states and 315 transitions. [2023-11-21 22:28:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:28:23,070 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 7.833333333333333) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 140 [2023-11-21 22:28:23,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:28:23,075 INFO L225 Difference]: With dead ends: 241 [2023-11-21 22:28:23,076 INFO L226 Difference]: Without dead ends: 141 [2023-11-21 22:28:23,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:28:23,079 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 5 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:28:23,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1156 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 22:28:23,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-21 22:28:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-11-21 22:28:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 74 states have internal predecessors, (81), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-21 22:28:23,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 183 transitions. [2023-11-21 22:28:23,098 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 183 transitions. Word has length 140 [2023-11-21 22:28:23,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:28:23,099 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 183 transitions. [2023-11-21 22:28:23,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 7.833333333333333) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-21 22:28:23,099 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 183 transitions. [2023-11-21 22:28:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-21 22:28:23,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:28:23,104 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:23,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:28:23,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:28:23,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:28:23,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:23,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1080187188, now seen corresponding path program 1 times [2023-11-21 22:28:23,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:23,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718044814] [2023-11-21 22:28:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:23,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:23,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:28:23,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292927180] [2023-11-21 22:28:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:23,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:28:23,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:28:23,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:28:23,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7214ead0-44bf-404a-bb1b-fb5f15703c75/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:28:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:57,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 3478 conjuncts, 360 conjunts are in the unsatisfiable core [2023-11-21 22:28:57,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:28:58,638 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:28:58,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-11-21 22:29:00,837 INFO L378 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 [2023-11-21 22:29:01,261 INFO L378 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 67 treesize of output 55 [2023-11-21 22:29:01,416 INFO L378 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 166 treesize of output 154 [2023-11-21 22:29:01,430 INFO L378 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 154 treesize of output 142