./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/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_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/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_979e9c4b-1359-4e11-ae5b-55e799816c69/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 1aff94200ac4117962e76fd53c645cd9f09d34e83ee2d9eea604e31ed1e8a72c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:04,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:04,568 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:45:04,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:04,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:04,617 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:04,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:04,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:04,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:04,625 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:04,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:04,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:04,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:04,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:04,630 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:04,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:04,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:04,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:04,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:04,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:04,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:04,633 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:04,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:04,634 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:04,635 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:04,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:04,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:04,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:04,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:04,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:04,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:04,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:04,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:04,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:04,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:04,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:04,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:04,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:04,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:04,642 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_979e9c4b-1359-4e11-ae5b-55e799816c69/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1aff94200ac4117962e76fd53c645cd9f09d34e83ee2d9eea604e31ed1e8a72c [2023-11-26 11:45:04,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:05,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:05,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:05,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:05,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:05,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i [2023-11-26 11:45:08,133 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:08,746 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:08,749 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i [2023-11-26 11:45:08,805 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/data/250dec726/b50bebbc74c2477698e52c55cce97206/FLAGa8abb5443 [2023-11-26 11:45:08,821 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/data/250dec726/b50bebbc74c2477698e52c55cce97206 [2023-11-26 11:45:08,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:08,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:08,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:08,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:08,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:08,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:08" (1/1) ... [2023-11-26 11:45:08,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c3aa90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:08, skipping insertion in model container [2023-11-26 11:45:08,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:08" (1/1) ... [2023-11-26 11:45:09,006 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:09,364 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_979e9c4b-1359-4e11-ae5b-55e799816c69/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4493,4506] [2023-11-26 11:45:09,375 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_979e9c4b-1359-4e11-ae5b-55e799816c69/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4553,4566] [2023-11-26 11:45:10,898 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,899 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,900 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,901 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,902 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,919 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,920 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,923 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,930 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,933 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,936 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,937 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:10,937 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:11,614 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:45:11,615 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:45:11,617 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:45:11,618 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:45:11,620 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:45:11,621 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:45:11,622 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:45:11,623 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:45:11,624 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:45:11,624 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:45:12,215 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,239 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,239 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,246 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,246 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,261 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,265 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,267 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,268 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,268 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,269 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,270 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:12,384 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:12,408 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_979e9c4b-1359-4e11-ae5b-55e799816c69/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4493,4506] [2023-11-26 11:45:12,408 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_979e9c4b-1359-4e11-ae5b-55e799816c69/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4553,4566] [2023-11-26 11:45:12,467 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,469 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,469 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,470 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,470 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,480 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,481 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,482 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,482 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,484 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,485 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,485 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,485 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,524 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:45:12,531 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:45:12,532 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:45:12,533 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:45:12,535 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:45:12,535 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:45:12,536 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:45:12,536 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:45:12,537 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:45:12,538 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:45:12,594 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2023-11-26 11:45:12,768 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,769 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,776 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,780 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,780 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,789 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,792 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,792 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:45:12,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:13,161 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,162 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,162 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,162 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,162 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,162 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,163 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,163 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,163 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,163 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,164 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,164 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,164 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,164 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,164 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,164 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,165 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,165 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:13,173 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:13,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13 WrapperNode [2023-11-26 11:45:13,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:13,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:13,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:13,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:13,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,390 INFO L138 Inliner]: procedures = 772, calls = 2442, calls flagged for inlining = 66, calls inlined = 9, statements flattened = 598 [2023-11-26 11:45:13,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:13,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:13,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:13,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:13,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,513 INFO L175 MemorySlicer]: Split 285 memory accesses to 10 slices as follows [9, 2, 5, 236, 6, 2, 2, 3, 17, 3]. 83 percent of accesses are in the largest equivalence class. The 247 initializations are split as follows [0, 2, 5, 236, 0, 0, 1, 0, 0, 3]. The 8 writes are split as follows [3, 0, 0, 0, 2, 1, 0, 1, 1, 0]. [2023-11-26 11:45:13,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,550 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,582 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:13,583 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:13,584 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:13,584 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:13,584 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (1/1) ... [2023-11-26 11:45:13,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:13,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:13,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:13,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-26 11:45:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-26 11:45:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-26 11:45:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-26 11:45:13,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-26 11:45:13,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-26 11:45:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-26 11:45:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-26 11:45:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-26 11:45:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-26 11:45:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2023-11-26 11:45:13,659 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2023-11-26 11:45:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:45:13,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:45:13,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:45:13,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:45:13,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:45:13,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:45:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:45:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:45:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-26 11:45:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-26 11:45:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-26 11:45:13,662 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-26 11:45:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:45:13,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:45:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-26 11:45:13,662 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-26 11:45:13,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:45:13,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:13,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:45:13,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:45:13,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:45:13,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:45:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:45:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:45:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 11:45:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 11:45:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-26 11:45:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-26 11:45:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:13,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 11:45:13,665 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 11:45:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-26 11:45:13,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-26 11:45:13,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:45:13,666 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-26 11:45:13,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-26 11:45:13,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:45:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:45:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:45:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:45:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 11:45:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 11:45:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 11:45:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 11:45:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-26 11:45:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-26 11:45:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-26 11:45:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-26 11:45:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:45:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:45:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:45:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:45:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:45:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:45:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:45:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:45:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-26 11:45:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-26 11:45:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-26 11:45:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-26 11:45:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:45:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-26 11:45:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-26 11:45:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:45:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:45:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-26 11:45:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-26 11:45:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:45:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:45:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:45:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 11:45:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 11:45:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 11:45:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 11:45:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-26 11:45:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-26 11:45:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-26 11:45:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2023-11-26 11:45:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2023-11-26 11:45:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-26 11:45:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-26 11:45:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-26 11:45:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-26 11:45:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2023-11-26 11:45:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2023-11-26 11:45:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:45:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:45:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:45:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:45:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:45:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:45:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:45:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 11:45:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 11:45:14,093 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:14,096 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:15,047 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:15,183 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:15,183 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:45:15,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:15 BoogieIcfgContainer [2023-11-26 11:45:15,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:15,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:15,188 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:15,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:15,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:08" (1/3) ... [2023-11-26 11:45:15,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175ac1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:15, skipping insertion in model container [2023-11-26 11:45:15,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:13" (2/3) ... [2023-11-26 11:45:15,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175ac1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:15, skipping insertion in model container [2023-11-26 11:45:15,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:15" (3/3) ... [2023-11-26 11:45:15,197 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness_negated.i [2023-11-26 11:45:15,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:15,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:45:15,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:15,303 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;@1abf2ccb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:15,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:45:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 74 states have internal predecessors, (87), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-26 11:45:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 11:45:15,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:15,325 INFO L195 NwaCegarLoop]: trace histogram [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 11:45:15,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:15,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:15,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1608877739, now seen corresponding path program 1 times [2023-11-26 11:45:15,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:15,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882756993] [2023-11-26 11:45:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:15,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:15,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:45:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:15,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 11:45:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:16,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:16,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882756993] [2023-11-26 11:45:16,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882756993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:16,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:16,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:16,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821185892] [2023-11-26 11:45:16,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:16,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:45:16,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:16,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:45:16,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:16,079 INFO L87 Difference]: Start difference. First operand has 122 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 74 states have internal predecessors, (87), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:16,505 INFO L93 Difference]: Finished difference Result 241 states and 335 transitions. [2023-11-26 11:45:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:45:16,509 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-11-26 11:45:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:16,520 INFO L225 Difference]: With dead ends: 241 [2023-11-26 11:45:16,521 INFO L226 Difference]: Without dead ends: 120 [2023-11-26 11:45:16,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:16,541 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:16,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:45:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-26 11:45:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-11-26 11:45:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 72 states have internal predecessors, (82), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-26 11:45:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2023-11-26 11:45:16,615 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 22 [2023-11-26 11:45:16,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:16,616 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2023-11-26 11:45:16,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:16,617 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2023-11-26 11:45:16,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 11:45:16,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:16,620 INFO L195 NwaCegarLoop]: trace histogram [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 11:45:16,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:45:16,620 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:16,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:16,621 INFO L85 PathProgramCache]: Analyzing trace with hash 587809385, now seen corresponding path program 1 times [2023-11-26 11:45:16,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:16,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479647121] [2023-11-26 11:45:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:16,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:16,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:45:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 11:45:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:16,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:16,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479647121] [2023-11-26 11:45:16,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479647121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:16,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:16,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:16,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112064467] [2023-11-26 11:45:16,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:16,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:16,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:16,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:16,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:16,979 INFO L87 Difference]: Start difference. First operand 120 states and 151 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:17,664 INFO L93 Difference]: Finished difference Result 175 states and 223 transitions. [2023-11-26 11:45:17,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:17,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-11-26 11:45:17,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:17,669 INFO L225 Difference]: With dead ends: 175 [2023-11-26 11:45:17,672 INFO L226 Difference]: Without dead ends: 135 [2023-11-26 11:45:17,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:17,675 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 5 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:17,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 267 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:45:17,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-26 11:45:17,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 130. [2023-11-26 11:45:17,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 77 states have internal predecessors, (88), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-26 11:45:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2023-11-26 11:45:17,704 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 22 [2023-11-26 11:45:17,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:17,705 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2023-11-26 11:45:17,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2023-11-26 11:45:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 11:45:17,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:17,708 INFO L195 NwaCegarLoop]: trace histogram [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 11:45:17,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:45:17,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:17,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:17,709 INFO L85 PathProgramCache]: Analyzing trace with hash 743276669, now seen corresponding path program 1 times [2023-11-26 11:45:17,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:17,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678671037] [2023-11-26 11:45:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:45:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:18,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:45:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:18,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678671037] [2023-11-26 11:45:18,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678671037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:18,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:18,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:18,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282416623] [2023-11-26 11:45:18,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:18,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:18,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:18,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:18,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:18,092 INFO L87 Difference]: Start difference. First operand 130 states and 167 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:18,621 INFO L93 Difference]: Finished difference Result 178 states and 226 transitions. [2023-11-26 11:45:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:18,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2023-11-26 11:45:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:18,624 INFO L225 Difference]: With dead ends: 178 [2023-11-26 11:45:18,624 INFO L226 Difference]: Without dead ends: 138 [2023-11-26 11:45:18,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:18,625 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 2 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:18,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 269 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:45:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-26 11:45:18,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-26 11:45:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 80 states have internal predecessors, (91), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-26 11:45:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 177 transitions. [2023-11-26 11:45:18,645 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 177 transitions. Word has length 23 [2023-11-26 11:45:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:18,645 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 177 transitions. [2023-11-26 11:45:18,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:18,646 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 177 transitions. [2023-11-26 11:45:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-26 11:45:18,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:18,652 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 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] [2023-11-26 11:45:18,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:45:18,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:18,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:18,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1645980736, now seen corresponding path program 1 times [2023-11-26 11:45:18,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:18,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674552683] [2023-11-26 11:45:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:18,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:18,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:18,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493522229] [2023-11-26 11:45:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:18,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:18,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:18,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:18,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:45:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:19,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:45:19,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-26 11:45:19,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:19,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:19,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674552683] [2023-11-26 11:45:19,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:19,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493522229] [2023-11-26 11:45:19,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493522229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:19,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:19,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:45:19,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210705856] [2023-11-26 11:45:19,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:19,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:45:19,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:19,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:19,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:19,714 INFO L87 Difference]: Start difference. First operand 138 states and 177 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-26 11:45:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:21,308 INFO L93 Difference]: Finished difference Result 275 states and 359 transitions. [2023-11-26 11:45:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:21,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 116 [2023-11-26 11:45:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:21,317 INFO L225 Difference]: With dead ends: 275 [2023-11-26 11:45:21,319 INFO L226 Difference]: Without dead ends: 142 [2023-11-26 11:45:21,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:21,321 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 1 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:21,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 532 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 11:45:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-26 11:45:21,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-11-26 11:45:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 80 states have (on average 1.175) internal successors, (94), 83 states have internal predecessors, (94), 44 states have call successors, (44), 16 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2023-11-26 11:45:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 181 transitions. [2023-11-26 11:45:21,339 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 181 transitions. Word has length 116 [2023-11-26 11:45:21,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:21,340 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 181 transitions. [2023-11-26 11:45:21,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-26 11:45:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 181 transitions. [2023-11-26 11:45:21,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-26 11:45:21,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:21,343 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 11:45:21,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:21,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:21,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:21,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash -184422144, now seen corresponding path program 1 times [2023-11-26 11:45:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:21,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946971822] [2023-11-26 11:45:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:21,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:23,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:45:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:23,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:23,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:23,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:45:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:23,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:45:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:45:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:45:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:45:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 11:45:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:45:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 11:45:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:45:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 11:45:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 11:45:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-26 11:45:24,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946971822] [2023-11-26 11:45:24,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946971822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531208021] [2023-11-26 11:45:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:24,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:24,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:24,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:24,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979e9c4b-1359-4e11-ae5b-55e799816c69/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:45:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:25,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 2485 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-26 11:45:25,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:25,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:45:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:45:26,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:26,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531208021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:26,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:45:26,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [17] total 24 [2023-11-26 11:45:26,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106148938] [2023-11-26 11:45:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:26,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:45:26,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:26,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:45:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2023-11-26 11:45:26,102 INFO L87 Difference]: Start difference. First operand 142 states and 181 transitions. Second operand has 13 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-26 11:45:31,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 11:45:37,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 11:45:41,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 11:45:45,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 11:45:49,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 11:45:54,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 11:45:58,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 11:46:02,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 11:46:06,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]