./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ --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 a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:37:12,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:37:12,517 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 22:37:12,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:37:12,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:37:12,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:37:12,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:37:12,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:37:12,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:37:12,561 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:37:12,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:37:12,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:37:12,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:37:12,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:37:12,565 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:37:12,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:37:12,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:37:12,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:37:12,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:37:12,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:37:12,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:37:12,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:37:12,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:37:12,570 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:37:12,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:37:12,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:37:12,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:37:12,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:37:12,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:37:12,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:37:12,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:37:12,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:37:12,575 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:37:12,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:37:12,576 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:37:12,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:37:12,576 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:37:12,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:37:12,577 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:37:12,577 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_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f [2023-11-23 22:37:12,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:37:12,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:37:12,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:37:12,906 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:37:12,907 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:37:12,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2023-11-23 22:37:16,102 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:37:16,723 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:37:16,724 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2023-11-23 22:37:16,779 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/data/247f707bd/480e66bd03aa43d28b83aeeb023f688f/FLAG983fac4b5 [2023-11-23 22:37:16,798 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/data/247f707bd/480e66bd03aa43d28b83aeeb023f688f [2023-11-23 22:37:16,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:37:16,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:37:16,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:37:16,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:37:16,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:37:16,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:37:16" (1/1) ... [2023-11-23 22:37:16,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d892187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:16, skipping insertion in model container [2023-11-23 22:37:16,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:37:16" (1/1) ... [2023-11-23 22:37:16,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:37:17,267 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_36f275ea-3795-4d97-a274-f675400ce486/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4501,4514] [2023-11-23 22:37:17,281 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_36f275ea-3795-4d97-a274-f675400ce486/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4561,4574] [2023-11-23 22:37:18,467 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,474 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,475 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,477 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,480 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,508 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,513 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,518 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,521 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,527 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,531 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,535 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:18,538 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,234 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 22:37:19,236 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 22:37:19,237 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 22:37:19,239 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 22:37:19,241 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 22:37:19,242 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 22:37:19,243 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 22:37:19,244 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 22:37:19,245 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 22:37:19,246 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 22:37:19,897 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,898 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,930 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,934 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,942 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,943 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,968 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,969 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,970 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,971 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,972 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,972 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:19,974 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:37:20,087 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:37:20,112 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_36f275ea-3795-4d97-a274-f675400ce486/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4501,4514] [2023-11-23 22:37:20,113 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_36f275ea-3795-4d97-a274-f675400ce486/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4561,4574] [2023-11-23 22:37:20,187 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,188 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,188 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,189 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,190 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,198 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,199 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,200 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,201 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,202 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,203 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,204 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,204 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,254 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 22:37:20,255 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 22:37:20,256 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 22:37:20,257 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 22:37:20,258 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 22:37:20,259 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 22:37:20,260 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 22:37:20,260 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 22:37:20,261 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 22:37:20,262 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 22:37:20,317 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2023-11-23 22:37:20,431 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,432 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,503 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,504 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,519 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,519 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,520 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,520 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,521 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,521 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,521 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 22:37:20,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:37:20,929 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,929 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,930 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,930 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,930 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,930 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,930 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,930 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,930 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,931 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,931 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,931 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,931 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,931 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,931 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,931 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,931 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,931 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:37:20,940 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:37:20,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20 WrapperNode [2023-11-23 22:37:20,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:37:20,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:37:20,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:37:20,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:37:20,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,169 INFO L138 Inliner]: procedures = 772, calls = 2431, calls flagged for inlining = 67, calls inlined = 13, statements flattened = 848 [2023-11-23 22:37:21,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:37:21,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:37:21,171 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:37:21,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:37:21,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,204 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,306 WARN L107 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-23 22:37:21,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:37:21,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:37:21,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:37:21,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:37:21,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (1/1) ... [2023-11-23 22:37:21,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:37:21,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:21,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:37:21,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:37:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 22:37:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 22:37:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 22:37:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 22:37:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 22:37:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 22:37:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 22:37:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 22:37:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 22:37:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 22:37:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:37:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:37:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 22:37:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:37:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:37:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 22:37:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 22:37:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:37:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 22:37:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 22:37:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 22:37:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 22:37:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 22:37:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 22:37:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 22:37:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 22:37:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-23 22:37:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-23 22:37:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:37:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 22:37:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 22:37:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-23 22:37:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-23 22:37:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-23 22:37:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 22:37:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 22:37:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 22:37:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 22:37:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 22:37:21,569 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 22:37:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 22:37:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 22:37:21,569 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 22:37:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 22:37:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 22:37:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 22:37:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 22:37:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-23 22:37:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-23 22:37:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 22:37:21,980 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:37:21,982 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:37:23,396 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2023-11-23 22:37:23,421 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:37:23,578 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:37:23,579 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 22:37:23,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:37:23 BoogieIcfgContainer [2023-11-23 22:37:23,580 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:37:23,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:37:23,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:37:23,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:37:23,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:37:16" (1/3) ... [2023-11-23 22:37:23,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522ae642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:37:23, skipping insertion in model container [2023-11-23 22:37:23,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:20" (2/3) ... [2023-11-23 22:37:23,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522ae642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:37:23, skipping insertion in model container [2023-11-23 22:37:23,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:37:23" (3/3) ... [2023-11-23 22:37:23,592 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness.i [2023-11-23 22:37:23,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:37:23,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:37:23,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:37:23,691 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;@7911f831, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:37:23,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:37:23,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 115 states have (on average 1.3391304347826087) internal successors, (154), 115 states have internal predecessors, (154), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 22:37:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 22:37:23,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:23,717 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:23,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:37:23,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:23,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1686328788, now seen corresponding path program 1 times [2023-11-23 22:37:23,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:23,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150261442] [2023-11-23 22:37:23,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:23,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:24,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:37:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:24,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 22:37:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 22:37:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 22:37:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:24,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 22:37:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:24,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 22:37:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:24,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:37:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:24,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 22:37:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:24,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:37:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 22:37:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 22:37:24,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:24,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150261442] [2023-11-23 22:37:24,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150261442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:24,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:24,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:37:24,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418883774] [2023-11-23 22:37:24,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:24,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:37:24,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:24,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:37:24,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:37:24,909 INFO L87 Difference]: Start difference. First operand has 172 states, 115 states have (on average 1.3391304347826087) internal successors, (154), 115 states have internal predecessors, (154), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 22:37:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:25,795 INFO L93 Difference]: Finished difference Result 342 states and 477 transitions. [2023-11-23 22:37:25,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:37:25,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 68 [2023-11-23 22:37:25,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:25,812 INFO L225 Difference]: With dead ends: 342 [2023-11-23 22:37:25,812 INFO L226 Difference]: Without dead ends: 170 [2023-11-23 22:37:25,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:37:25,829 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 45 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:25,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 249 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 22:37:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-23 22:37:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2023-11-23 22:37:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 111 states have (on average 1.3063063063063063) internal successors, (145), 112 states have internal predecessors, (145), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 22:37:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 220 transitions. [2023-11-23 22:37:25,905 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 220 transitions. Word has length 68 [2023-11-23 22:37:25,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:25,907 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 220 transitions. [2023-11-23 22:37:25,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 22:37:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 220 transitions. [2023-11-23 22:37:25,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 22:37:25,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:25,912 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:25,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:37:25,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:37:25,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:25,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1784409382, now seen corresponding path program 1 times [2023-11-23 22:37:25,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:25,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703171320] [2023-11-23 22:37:25,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:25,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:26,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:37:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:26,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 22:37:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:26,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 22:37:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:26,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 22:37:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:26,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 22:37:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:26,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 22:37:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:37:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 22:37:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:26,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:37:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 22:37:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:26,711 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 22:37:26,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:26,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703171320] [2023-11-23 22:37:26,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703171320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:26,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:26,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:37:26,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722456908] [2023-11-23 22:37:26,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:26,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:37:26,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:37:26,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:37:26,717 INFO L87 Difference]: Start difference. First operand 168 states and 220 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 22:37:27,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:27,847 INFO L93 Difference]: Finished difference Result 300 states and 380 transitions. [2023-11-23 22:37:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:37:27,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 68 [2023-11-23 22:37:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:27,853 INFO L225 Difference]: With dead ends: 300 [2023-11-23 22:37:27,853 INFO L226 Difference]: Without dead ends: 176 [2023-11-23 22:37:27,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:37:27,860 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 51 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:27,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 528 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 22:37:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-23 22:37:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 170. [2023-11-23 22:37:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 113 states have (on average 1.3008849557522124) internal successors, (147), 114 states have internal predecessors, (147), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 22:37:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 222 transitions. [2023-11-23 22:37:27,907 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 222 transitions. Word has length 68 [2023-11-23 22:37:27,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:27,907 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 222 transitions. [2023-11-23 22:37:27,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 22:37:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 222 transitions. [2023-11-23 22:37:27,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 22:37:27,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:27,923 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:27,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:37:27,924 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:37:27,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:27,925 INFO L85 PathProgramCache]: Analyzing trace with hash -156783371, now seen corresponding path program 1 times [2023-11-23 22:37:27,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:27,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413785506] [2023-11-23 22:37:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:27,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:37:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 22:37:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:28,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 22:37:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:28,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 22:37:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:28,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 22:37:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:28,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 22:37:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:28,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:37:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 22:37:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:28,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:37:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:28,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 22:37:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 22:37:28,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:28,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413785506] [2023-11-23 22:37:28,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413785506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:28,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:28,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:37:28,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129591648] [2023-11-23 22:37:28,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:28,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:37:28,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:28,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:37:28,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:37:28,867 INFO L87 Difference]: Start difference. First operand 170 states and 222 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 22:37:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:29,689 INFO L93 Difference]: Finished difference Result 220 states and 278 transitions. [2023-11-23 22:37:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:37:29,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 70 [2023-11-23 22:37:29,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:29,693 INFO L225 Difference]: With dead ends: 220 [2023-11-23 22:37:29,693 INFO L226 Difference]: Without dead ends: 176 [2023-11-23 22:37:29,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:37:29,696 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 45 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:29,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 525 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 22:37:29,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-23 22:37:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2023-11-23 22:37:29,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 116 states have (on average 1.293103448275862) internal successors, (150), 117 states have internal predecessors, (150), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 38 states have call predecessors, (38), 37 states have call successors, (38) [2023-11-23 22:37:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 226 transitions. [2023-11-23 22:37:29,720 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 226 transitions. Word has length 70 [2023-11-23 22:37:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:29,721 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 226 transitions. [2023-11-23 22:37:29,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 22:37:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 226 transitions. [2023-11-23 22:37:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-23 22:37:29,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:29,724 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:29,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:37:29,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:37:29,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:29,725 INFO L85 PathProgramCache]: Analyzing trace with hash 499648492, now seen corresponding path program 1 times [2023-11-23 22:37:29,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:29,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513429989] [2023-11-23 22:37:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:29,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:37:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 22:37:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 22:37:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 22:37:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 22:37:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 22:37:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:37:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 22:37:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:37:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 22:37:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 22:37:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 22:37:30,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:30,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513429989] [2023-11-23 22:37:30,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513429989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:30,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:30,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:37:30,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527371932] [2023-11-23 22:37:30,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:30,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:37:30,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:37:30,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:37:30,303 INFO L87 Difference]: Start difference. First operand 174 states and 226 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 22:37:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:31,500 INFO L93 Difference]: Finished difference Result 261 states and 340 transitions. [2023-11-23 22:37:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:37:31,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 73 [2023-11-23 22:37:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:31,505 INFO L225 Difference]: With dead ends: 261 [2023-11-23 22:37:31,506 INFO L226 Difference]: Without dead ends: 217 [2023-11-23 22:37:31,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:37:31,508 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 125 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:31,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 542 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 22:37:31,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-23 22:37:31,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 170. [2023-11-23 22:37:31,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 113 states have (on average 1.2831858407079646) internal successors, (145), 114 states have internal predecessors, (145), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 22:37:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 220 transitions. [2023-11-23 22:37:31,540 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 220 transitions. Word has length 73 [2023-11-23 22:37:31,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:31,541 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 220 transitions. [2023-11-23 22:37:31,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 22:37:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 220 transitions. [2023-11-23 22:37:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 22:37:31,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:31,544 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:31,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:37:31,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:37:31,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1073245934, now seen corresponding path program 1 times [2023-11-23 22:37:31,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:31,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961044747] [2023-11-23 22:37:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:31,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:31,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:37:31,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617003296] [2023-11-23 22:37:31,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:31,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:31,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:31,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:37:31,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:37:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:32,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-23 22:37:32,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:37:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 22:37:32,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:37:32,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:32,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961044747] [2023-11-23 22:37:32,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:37:32,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617003296] [2023-11-23 22:37:32,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617003296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:32,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:32,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:37:32,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943113797] [2023-11-23 22:37:32,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:32,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:37:32,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:32,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:37:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:37:32,659 INFO L87 Difference]: Start difference. First operand 170 states and 220 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 22:37:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:33,172 INFO L93 Difference]: Finished difference Result 221 states and 278 transitions. [2023-11-23 22:37:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:37:33,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 90 [2023-11-23 22:37:33,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:33,178 INFO L225 Difference]: With dead ends: 221 [2023-11-23 22:37:33,179 INFO L226 Difference]: Without dead ends: 170 [2023-11-23 22:37:33,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:37:33,181 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:33,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 804 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 22:37:33,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-23 22:37:33,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-23 22:37:33,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 113 states have (on average 1.2654867256637168) internal successors, (143), 114 states have internal predecessors, (143), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 22:37:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2023-11-23 22:37:33,226 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 90 [2023-11-23 22:37:33,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:33,228 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2023-11-23 22:37:33,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 22:37:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2023-11-23 22:37:33,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 22:37:33,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:33,235 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2023-11-23 22:37:33,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 22:37:33,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:33,461 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:37:33,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:33,461 INFO L85 PathProgramCache]: Analyzing trace with hash -689791160, now seen corresponding path program 1 times [2023-11-23 22:37:33,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:33,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26724331] [2023-11-23 22:37:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:33,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:33,656 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:37:33,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751312020] [2023-11-23 22:37:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:33,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:33,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:33,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:37:33,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:37:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:34,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:37:34,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:37:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 22:37:34,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:37:34,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:34,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26724331] [2023-11-23 22:37:34,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:37:34,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751312020] [2023-11-23 22:37:34,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751312020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:34,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:34,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:37:34,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811900898] [2023-11-23 22:37:34,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:34,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:37:34,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:34,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:37:34,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:37:34,449 INFO L87 Difference]: Start difference. First operand 170 states and 218 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2023-11-23 22:37:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:34,574 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2023-11-23 22:37:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:37:34,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 121 [2023-11-23 22:37:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:34,577 INFO L225 Difference]: With dead ends: 271 [2023-11-23 22:37:34,577 INFO L226 Difference]: Without dead ends: 170 [2023-11-23 22:37:34,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:37:34,579 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:34,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:37:34,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-23 22:37:34,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-23 22:37:34,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 113 states have (on average 1.247787610619469) internal successors, (141), 114 states have internal predecessors, (141), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 22:37:34,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 216 transitions. [2023-11-23 22:37:34,597 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 216 transitions. Word has length 121 [2023-11-23 22:37:34,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:34,598 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 216 transitions. [2023-11-23 22:37:34,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2023-11-23 22:37:34,598 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 216 transitions. [2023-11-23 22:37:34,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-23 22:37:34,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:34,600 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1] [2023-11-23 22:37:34,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:37:34,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:34,816 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:37:34,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:34,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1543330335, now seen corresponding path program 1 times [2023-11-23 22:37:34,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:34,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911295571] [2023-11-23 22:37:34,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:34,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:34,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:37:34,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410341330] [2023-11-23 22:37:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:34,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:34,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:34,977 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:37:35,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:37:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:35,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 2793 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 22:37:35,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:37:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-23 22:37:35,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:37:35,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:35,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911295571] [2023-11-23 22:37:35,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:37:35,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410341330] [2023-11-23 22:37:35,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410341330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:35,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:35,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:37:35,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385933526] [2023-11-23 22:37:35,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:35,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:37:35,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:35,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:37:35,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:37:35,903 INFO L87 Difference]: Start difference. First operand 170 states and 216 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 22:37:36,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:36,399 INFO L93 Difference]: Finished difference Result 223 states and 276 transitions. [2023-11-23 22:37:36,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:37:36,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 131 [2023-11-23 22:37:36,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:36,402 INFO L225 Difference]: With dead ends: 223 [2023-11-23 22:37:36,402 INFO L226 Difference]: Without dead ends: 170 [2023-11-23 22:37:36,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:37:36,404 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:36,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 593 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 22:37:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-23 22:37:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-23 22:37:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 113 states have (on average 1.238938053097345) internal successors, (140), 114 states have internal predecessors, (140), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 22:37:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 215 transitions. [2023-11-23 22:37:36,431 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 215 transitions. Word has length 131 [2023-11-23 22:37:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:36,432 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 215 transitions. [2023-11-23 22:37:36,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 22:37:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 215 transitions. [2023-11-23 22:37:36,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 22:37:36,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:36,468 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:36,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:37:36,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:36,684 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:37:36,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:36,686 INFO L85 PathProgramCache]: Analyzing trace with hash 854952915, now seen corresponding path program 1 times [2023-11-23 22:37:36,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:36,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668856542] [2023-11-23 22:37:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:36,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:36,848 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:37:36,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867376053] [2023-11-23 22:37:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:36,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:36,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:36,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:37:36,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:37:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:37,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 22:37:37,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:37:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-23 22:37:37,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:37:37,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:37,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668856542] [2023-11-23 22:37:37,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:37:37,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867376053] [2023-11-23 22:37:37,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867376053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:37,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:37,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 22:37:37,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289876382] [2023-11-23 22:37:37,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:37,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:37:37,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:37,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:37:37,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:37:37,904 INFO L87 Difference]: Start difference. First operand 170 states and 215 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 22:37:38,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:38,406 INFO L93 Difference]: Finished difference Result 231 states and 284 transitions. [2023-11-23 22:37:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:37:38,407 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), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 142 [2023-11-23 22:37:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:38,409 INFO L225 Difference]: With dead ends: 231 [2023-11-23 22:37:38,409 INFO L226 Difference]: Without dead ends: 168 [2023-11-23 22:37:38,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:37:38,411 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 4 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:38,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1357 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 22:37:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-23 22:37:38,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-11-23 22:37:38,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 113 states have internal predecessors, (137), 37 states have call successors, (37), 18 states have call predecessors, (37), 18 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-23 22:37:38,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 210 transitions. [2023-11-23 22:37:38,426 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 210 transitions. Word has length 142 [2023-11-23 22:37:38,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:38,427 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 210 transitions. [2023-11-23 22:37:38,428 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), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 22:37:38,428 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 210 transitions. [2023-11-23 22:37:38,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-23 22:37:38,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:38,455 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:38,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:37:38,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:38,664 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:37:38,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash -262508500, now seen corresponding path program 1 times [2023-11-23 22:37:38,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:38,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364524599] [2023-11-23 22:37:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:38,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:38,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:37:38,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697441197] [2023-11-23 22:37:38,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:38,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:38,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:38,813 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:37:38,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f275ea-3795-4d97-a274-f675400ce486/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:37:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:39,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 22:37:39,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:37:39,991 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 [2023-11-23 22:37:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 22:37:40,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:37:40,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:40,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364524599] [2023-11-23 22:37:40,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:37:40,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697441197] [2023-11-23 22:37:40,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697441197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:40,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:40,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-23 22:37:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315561609] [2023-11-23 22:37:40,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:40,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 22:37:40,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:40,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 22:37:40,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-23 22:37:40,483 INFO L87 Difference]: Start difference. First operand 168 states and 210 transitions. Second operand has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 13 states have internal predecessors, (67), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 22:37:43,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:37:45,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:37:47,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:37:49,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:37:51,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:37:53,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:37:55,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:37:57,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 22:37:59,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:38:01,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:38:03,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 22:38:06,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:38:09,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:38:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:38:11,073 INFO L93 Difference]: Finished difference Result 227 states and 276 transitions. [2023-11-23 22:38:11,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 22:38:11,074 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 13 states have internal predecessors, (67), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) Word has length 163 [2023-11-23 22:38:11,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:38:11,077 INFO L225 Difference]: With dead ends: 227 [2023-11-23 22:38:11,077 INFO L226 Difference]: Without dead ends: 181 [2023-11-23 22:38:11,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2023-11-23 22:38:11,079 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 82 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 10 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:38:11,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 2137 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 545 Invalid, 13 Unknown, 0 Unchecked, 30.3s Time] [2023-11-23 22:38:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states.