./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme --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 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:48:17,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:48:17,634 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:48:17,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:48:17,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:48:17,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:48:17,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:48:17,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:48:17,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:48:17,704 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:48:17,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:48:17,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:48:17,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:48:17,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:48:17,709 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:48:17,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:48:17,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:48:17,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:48:17,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:48:17,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:48:17,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:48:17,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:48:17,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:48:17,716 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:48:17,717 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:48:17,717 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:48:17,718 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:48:17,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:48:17,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:17,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:48:17,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:48:17,722 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:48:17,722 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:48:17,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:48:17,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:48:17,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:48:17,723 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:48:17,724 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:48:17,724 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:48:17,724 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_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed [2023-11-26 11:48:18,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:48:18,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:48:18,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:48:18,151 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:48:18,151 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:48:18,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2023-11-26 11:48:21,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:22,393 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:22,393 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2023-11-26 11:48:22,451 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/data/763b8f92f/3bd5534867a64a87aa2673c969df507c/FLAG3ef395c6a [2023-11-26 11:48:22,471 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/data/763b8f92f/3bd5534867a64a87aa2673c969df507c [2023-11-26 11:48:22,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:22,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:22,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:22,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:22,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:22,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:22" (1/1) ... [2023-11-26 11:48:22,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1746478b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:22, skipping insertion in model container [2023-11-26 11:48:22,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:22" (1/1) ... [2023-11-26 11:48:22,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:23,092 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_b0afe9c9-53a7-4272-8088-93022cb906ea/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2023-11-26 11:48:23,103 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_b0afe9c9-53a7-4272-8088-93022cb906ea/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2023-11-26 11:48:24,612 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,613 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,614 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,615 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,617 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,635 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,636 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,639 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,640 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,643 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,644 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:24,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,164 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:48:25,166 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:48:25,168 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:48:25,169 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:48:25,171 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:48:25,172 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:48:25,174 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:48:25,175 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:48:25,176 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:48:25,177 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:48:25,416 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,425 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:25,545 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:25,563 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_b0afe9c9-53a7-4272-8088-93022cb906ea/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2023-11-26 11:48:25,564 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_b0afe9c9-53a7-4272-8088-93022cb906ea/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2023-11-26 11:48:25,628 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,629 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,630 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,631 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,632 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,640 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,641 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,642 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,643 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,645 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,645 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,647 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,691 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:48:25,692 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:48:25,693 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:48:25,695 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:48:25,696 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:48:25,697 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:48:25,698 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:48:25,699 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:48:25,700 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:48:25,701 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:48:25,738 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,744 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,752 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7770-7781] [2023-11-26 11:48:25,833 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,844 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,845 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:25,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:26,176 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,178 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,178 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,178 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,180 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,182 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,183 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,183 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,183 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,183 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,184 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,184 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,184 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,184 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,185 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:26,195 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:26,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26 WrapperNode [2023-11-26 11:48:26,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:26,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:26,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:26,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:26,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,466 INFO L138 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 850 [2023-11-26 11:48:26,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:26,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:26,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:26,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:26,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,496 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,640 INFO L175 MemorySlicer]: Split 333 memory accesses to 7 slices as follows [2, 236, 6, 6, 72, 8, 3]. 71 percent of accesses are in the largest equivalence class. The 257 initializations are split as follows [2, 236, 0, 1, 10, 5, 3]. The 9 writes are split as follows [0, 0, 2, 1, 6, 0, 0]. [2023-11-26 11:48:26,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,644 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,752 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:26,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:26,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:26,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:26,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (1/1) ... [2023-11-26 11:48:26,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:26,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:26,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:26,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:48:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-26 11:48:26,874 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-26 11:48:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-26 11:48:26,875 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-26 11:48:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-26 11:48:26,875 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-26 11:48:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-26 11:48:26,876 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-26 11:48:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:48:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:48:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:48:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:48:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:48:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:48:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:48:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-26 11:48:26,878 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-26 11:48:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:48:26,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:48:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:48:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:48:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:48:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:48:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:48:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:48:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:48:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 11:48:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-26 11:48:26,881 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-26 11:48:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 11:48:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 11:48:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-26 11:48:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-26 11:48:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-26 11:48:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-26 11:48:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-26 11:48:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-26 11:48:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-26 11:48:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-26 11:48:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-26 11:48:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-26 11:48:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:48:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:48:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-26 11:48:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-26 11:48:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-26 11:48:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-26 11:48:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:48:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-26 11:48:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-26 11:48:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:48:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:48:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:48:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:48:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 11:48:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 11:48:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 11:48:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:48:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:48:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:48:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 11:48:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 11:48:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 11:48:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 11:48:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-26 11:48:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-26 11:48:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-26 11:48:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-26 11:48:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-26 11:48:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-26 11:48:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:48:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:48:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:48:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:48:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:48:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:48:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:48:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-26 11:48:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-26 11:48:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2023-11-26 11:48:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2023-11-26 11:48:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:48:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:48:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:48:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:48:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:48:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:48:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:48:27,383 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:27,386 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:48:28,752 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:48:28,935 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:48:28,935 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:48:28,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:28 BoogieIcfgContainer [2023-11-26 11:48:28,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:48:28,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:48:28,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:48:28,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:48:28,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:22" (1/3) ... [2023-11-26 11:48:28,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47859ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:28, skipping insertion in model container [2023-11-26 11:48:28,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:26" (2/3) ... [2023-11-26 11:48:28,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47859ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:28, skipping insertion in model container [2023-11-26 11:48:28,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:28" (3/3) ... [2023-11-26 11:48:28,950 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2023-11-26 11:48:28,975 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:48:28,975 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:48:29,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:29,083 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;@4f81537b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:29,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:48:29,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 143 states have (on average 1.2517482517482517) internal successors, (179), 144 states have internal predecessors, (179), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-11-26 11:48:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-26 11:48:29,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:29,124 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:29,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:29,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:29,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2030849426, now seen corresponding path program 1 times [2023-11-26 11:48:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:29,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523380104] [2023-11-26 11:48:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:29,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:48:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:48:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:48:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:48:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:48:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:48:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 11:48:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 11:48:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 11:48:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 11:48:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:48:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 11:48:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:48:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 11:48:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 11:48:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 11:48:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 11:48:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-26 11:48:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-26 11:48:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-26 11:48:30,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:30,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523380104] [2023-11-26 11:48:30,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523380104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:30,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:30,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:48:30,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648405784] [2023-11-26 11:48:30,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:30,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:48:30,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:48:30,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:48:30,786 INFO L87 Difference]: Start difference. First operand has 260 states, 143 states have (on average 1.2517482517482517) internal successors, (179), 144 states have internal predecessors, (179), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 6 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-26 11:48:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:32,923 INFO L93 Difference]: Finished difference Result 545 states and 846 transitions. [2023-11-26 11:48:32,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:48:32,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 6 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 139 [2023-11-26 11:48:32,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:32,945 INFO L225 Difference]: With dead ends: 545 [2023-11-26 11:48:32,945 INFO L226 Difference]: Without dead ends: 288 [2023-11-26 11:48:32,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:32,958 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 250 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:32,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 349 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 11:48:32,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-26 11:48:33,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 258. [2023-11-26 11:48:33,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 142 states have (on average 1.2394366197183098) internal successors, (176), 143 states have internal predecessors, (176), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-26 11:48:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 361 transitions. [2023-11-26 11:48:33,067 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 361 transitions. Word has length 139 [2023-11-26 11:48:33,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:33,068 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 361 transitions. [2023-11-26 11:48:33,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 6 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-26 11:48:33,068 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 361 transitions. [2023-11-26 11:48:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-26 11:48:33,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:33,073 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:33,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:48:33,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:33,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:33,074 INFO L85 PathProgramCache]: Analyzing trace with hash -315484528, now seen corresponding path program 1 times [2023-11-26 11:48:33,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:33,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156648696] [2023-11-26 11:48:33,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:33,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:48:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:48:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:48:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:48:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:48:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:48:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 11:48:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 11:48:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 11:48:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 11:48:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:48:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 11:48:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:48:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 11:48:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:34,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 11:48:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:34,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 11:48:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 11:48:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:34,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-26 11:48:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:34,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-26 11:48:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-26 11:48:34,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:34,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156648696] [2023-11-26 11:48:34,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156648696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:34,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881609314] [2023-11-26 11:48:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:34,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:34,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:34,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:34,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:48:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:34,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:48:34,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-11-26 11:48:34,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:34,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881609314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:34,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:34,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-26 11:48:34,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987621992] [2023-11-26 11:48:34,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:34,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:34,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:34,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:48:34,989 INFO L87 Difference]: Start difference. First operand 258 states and 361 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-26 11:48:35,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:35,609 INFO L93 Difference]: Finished difference Result 494 states and 708 transitions. [2023-11-26 11:48:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:48:35,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 139 [2023-11-26 11:48:35,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:35,624 INFO L225 Difference]: With dead ends: 494 [2023-11-26 11:48:35,625 INFO L226 Difference]: Without dead ends: 260 [2023-11-26 11:48:35,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:48:35,630 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 43 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:35,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1159 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:48:35,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-26 11:48:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-11-26 11:48:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 143 states have (on average 1.2377622377622377) internal successors, (177), 145 states have internal predecessors, (177), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2023-11-26 11:48:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 378 transitions. [2023-11-26 11:48:35,708 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 378 transitions. Word has length 139 [2023-11-26 11:48:35,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:35,710 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 378 transitions. [2023-11-26 11:48:35,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-26 11:48:35,710 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 378 transitions. [2023-11-26 11:48:35,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-26 11:48:35,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:35,720 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:35,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:35,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:35,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:35,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:35,930 INFO L85 PathProgramCache]: Analyzing trace with hash -699074486, now seen corresponding path program 1 times [2023-11-26 11:48:35,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:35,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348275952] [2023-11-26 11:48:35,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:35,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:36,097 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:48:36,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630138204] [2023-11-26 11:48:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:36,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:36,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:36,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:48:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:36,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:48:36,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-26 11:48:37,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:37,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:37,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348275952] [2023-11-26 11:48:37,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:48:37,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630138204] [2023-11-26 11:48:37,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630138204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:37,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:37,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:48:37,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41205238] [2023-11-26 11:48:37,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:37,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:48:37,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:48:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:37,021 INFO L87 Difference]: Start difference. First operand 260 states and 378 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-26 11:48:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:38,214 INFO L93 Difference]: Finished difference Result 475 states and 689 transitions. [2023-11-26 11:48:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:48:38,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 165 [2023-11-26 11:48:38,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:38,220 INFO L225 Difference]: With dead ends: 475 [2023-11-26 11:48:38,220 INFO L226 Difference]: Without dead ends: 260 [2023-11-26 11:48:38,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:48:38,225 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 147 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:38,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1591 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 11:48:38,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-26 11:48:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-11-26 11:48:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 143 states have (on average 1.2377622377622377) internal successors, (177), 145 states have internal predecessors, (177), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (104), 92 states have call predecessors, (104), 92 states have call successors, (104) [2023-11-26 11:48:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 374 transitions. [2023-11-26 11:48:38,305 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 374 transitions. Word has length 165 [2023-11-26 11:48:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:38,306 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 374 transitions. [2023-11-26 11:48:38,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-26 11:48:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 374 transitions. [2023-11-26 11:48:38,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-26 11:48:38,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:38,316 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:38,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:38,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 11:48:38,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:38,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:38,535 INFO L85 PathProgramCache]: Analyzing trace with hash 107922179, now seen corresponding path program 2 times [2023-11-26 11:48:38,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:38,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900066625] [2023-11-26 11:48:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:38,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:38,660 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:48:38,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988790647] [2023-11-26 11:48:38,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:48:38,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:38,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:38,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:38,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:48:39,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:48:39,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:48:39,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:48:39,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-11-26 11:48:39,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:39,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:39,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900066625] [2023-11-26 11:48:39,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:48:39,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988790647] [2023-11-26 11:48:39,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988790647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:39,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:39,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:48:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615817316] [2023-11-26 11:48:39,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:39,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:39,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:39,376 INFO L87 Difference]: Start difference. First operand 260 states and 374 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-26 11:48:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:39,884 INFO L93 Difference]: Finished difference Result 456 states and 646 transitions. [2023-11-26 11:48:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:48:39,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 178 [2023-11-26 11:48:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:39,890 INFO L225 Difference]: With dead ends: 456 [2023-11-26 11:48:39,890 INFO L226 Difference]: Without dead ends: 264 [2023-11-26 11:48:39,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:48:39,896 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:39,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1362 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:48:39,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-26 11:48:39,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-11-26 11:48:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 146 states have (on average 1.2328767123287672) internal successors, (180), 148 states have internal predecessors, (180), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (106), 93 states have call predecessors, (106), 92 states have call successors, (106) [2023-11-26 11:48:39,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 379 transitions. [2023-11-26 11:48:39,935 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 379 transitions. Word has length 178 [2023-11-26 11:48:39,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:39,939 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 379 transitions. [2023-11-26 11:48:39,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-26 11:48:39,939 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 379 transitions. [2023-11-26 11:48:39,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-26 11:48:39,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:39,945 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:39,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:40,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:40,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:40,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:40,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1081549851, now seen corresponding path program 1 times [2023-11-26 11:48:40,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:40,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947619423] [2023-11-26 11:48:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:40,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:48:40,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582091888] [2023-11-26 11:48:40,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:40,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:40,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:40,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:40,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:48:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:41,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:48:41,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-26 11:48:41,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:41,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:41,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947619423] [2023-11-26 11:48:41,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:48:41,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582091888] [2023-11-26 11:48:41,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582091888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:41,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:41,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:48:41,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237122489] [2023-11-26 11:48:41,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:41,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:48:41,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:48:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:48:41,344 INFO L87 Difference]: Start difference. First operand 264 states and 379 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-26 11:48:42,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:42,813 INFO L93 Difference]: Finished difference Result 477 states and 681 transitions. [2023-11-26 11:48:42,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:48:42,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 182 [2023-11-26 11:48:42,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:42,818 INFO L225 Difference]: With dead ends: 477 [2023-11-26 11:48:42,818 INFO L226 Difference]: Without dead ends: 264 [2023-11-26 11:48:42,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:48:42,821 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 183 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:42,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1801 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 11:48:42,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-26 11:48:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-11-26 11:48:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 146 states have (on average 1.2328767123287672) internal successors, (180), 148 states have internal predecessors, (180), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (100), 93 states have call predecessors, (100), 92 states have call successors, (100) [2023-11-26 11:48:42,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 373 transitions. [2023-11-26 11:48:42,859 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 373 transitions. Word has length 182 [2023-11-26 11:48:42,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:42,860 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 373 transitions. [2023-11-26 11:48:42,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-26 11:48:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 373 transitions. [2023-11-26 11:48:42,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-26 11:48:42,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:42,865 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:42,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 11:48:43,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:43,087 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:43,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:43,088 INFO L85 PathProgramCache]: Analyzing trace with hash -685188088, now seen corresponding path program 2 times [2023-11-26 11:48:43,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:43,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131403138] [2023-11-26 11:48:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:43,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:43,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:48:43,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335812876] [2023-11-26 11:48:43,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:48:43,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:43,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:43,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:43,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:48:44,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:48:44,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:48:44,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:48:44,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-26 11:48:44,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:44,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:44,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131403138] [2023-11-26 11:48:44,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:48:44,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335812876] [2023-11-26 11:48:44,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335812876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:44,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:44,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:48:44,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973578831] [2023-11-26 11:48:44,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:44,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:48:44,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:44,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:48:44,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:48:44,612 INFO L87 Difference]: Start difference. First operand 264 states and 373 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-26 11:48:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:45,774 INFO L93 Difference]: Finished difference Result 474 states and 664 transitions. [2023-11-26 11:48:45,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:48:45,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 195 [2023-11-26 11:48:45,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:45,780 INFO L225 Difference]: With dead ends: 474 [2023-11-26 11:48:45,780 INFO L226 Difference]: Without dead ends: 264 [2023-11-26 11:48:45,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:48:45,783 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 190 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:45,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 2076 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 11:48:45,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-26 11:48:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-11-26 11:48:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 146 states have (on average 1.2328767123287672) internal successors, (180), 148 states have internal predecessors, (180), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (96), 93 states have call predecessors, (96), 92 states have call successors, (96) [2023-11-26 11:48:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 369 transitions. [2023-11-26 11:48:45,816 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 369 transitions. Word has length 195 [2023-11-26 11:48:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:45,818 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 369 transitions. [2023-11-26 11:48:45,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-26 11:48:45,818 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 369 transitions. [2023-11-26 11:48:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-26 11:48:45,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:45,822 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:45,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:46,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:46,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:46,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1289327230, now seen corresponding path program 1 times [2023-11-26 11:48:46,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:46,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885543008] [2023-11-26 11:48:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:46,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:46,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:48:46,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237843722] [2023-11-26 11:48:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:46,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:46,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:46,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:46,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0afe9c9-53a7-4272-8088-93022cb906ea/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:48:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 3275 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-26 11:48:47,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:47,658 INFO L378 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 16 treesize of output 5 [2023-11-26 11:48:47,664 INFO L378 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 16 treesize of output 5 [2023-11-26 11:48:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 208 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-26 11:48:48,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 9 proven. 66 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-11-26 11:48:49,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:49,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885543008] [2023-11-26 11:48:49,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:48:49,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237843722] [2023-11-26 11:48:49,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237843722] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:49,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:48:49,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 31 [2023-11-26 11:48:49,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151842998] [2023-11-26 11:48:49,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:49,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-26 11:48:49,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:49,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-26 11:48:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2023-11-26 11:48:49,391 INFO L87 Difference]: Start difference. First operand 264 states and 369 transitions. Second operand has 31 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 12 states have call successors, (59), 6 states have call predecessors, (59), 9 states have return successors, (56), 9 states have call predecessors, (56), 11 states have call successors, (56) [2023-11-26 11:49:02,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]