./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:08:00,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:08:00,846 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 23:08:00,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:08:00,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:08:00,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:08:00,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:08:00,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:08:00,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:08:00,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:08:00,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:08:00,912 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:08:00,912 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:08:00,913 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:08:00,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:08:00,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:08:00,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:08:00,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:08:00,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:08:00,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:08:00,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:08:00,922 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:08:00,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:08:00,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:08:00,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:08:00,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:00,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:08:00,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:08:00,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:08:00,926 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:08:00,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:08:00,931 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:08:00,931 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:08:00,932 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:08:00,932 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:08:00,933 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:08:00,933 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_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 [2023-11-06 23:08:01,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:08:01,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:08:01,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:08:01,265 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:08:01,266 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:08:01,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2023-11-06 23:08:04,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:08:05,231 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:08:05,234 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2023-11-06 23:08:05,289 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/data/981bd9ce8/35753c01f8844352a3673180aba9c301/FLAG2e0ddd7e9 [2023-11-06 23:08:05,309 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/data/981bd9ce8/35753c01f8844352a3673180aba9c301 [2023-11-06 23:08:05,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:08:05,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:08:05,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:05,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:08:05,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:08:05,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:05" (1/1) ... [2023-11-06 23:08:05,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133d63fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:05, skipping insertion in model container [2023-11-06 23:08:05,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:05" (1/1) ... [2023-11-06 23:08:05,472 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:08:05,741 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_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4486,4499] [2023-11-06 23:08:05,751 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_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4546,4559] [2023-11-06 23:08:07,024 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:07,026 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:07,027 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:07,030 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:07,035 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:07,051 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:07,051 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:07,054 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:07,055 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:07,585 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 23:08:07,587 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 23:08:07,588 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 23:08:07,590 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 23:08:07,592 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 23:08:07,593 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 23:08:07,594 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 23:08:07,595 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 23:08:07,596 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 23:08:07,597 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 23:08:07,992 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:07,993 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:08,124 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:08:08,141 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_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4486,4499] [2023-11-06 23:08:08,141 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_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4546,4559] [2023-11-06 23:08:08,184 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,184 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,185 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,186 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,187 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,195 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,195 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,197 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,197 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,236 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 23:08:08,237 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 23:08:08,238 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 23:08:08,239 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 23:08:08,241 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 23:08:08,241 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 23:08:08,242 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 23:08:08,243 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 23:08:08,243 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 23:08:08,244 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 23:08:08,329 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-06 23:08:08,331 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,331 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 23:08:08,346 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-06 23:08:08,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:08,666 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,666 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,668 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,668 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,668 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,669 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,669 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,669 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,669 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,669 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,670 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,670 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,671 WARN L672 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,672 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,672 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,672 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,672 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,673 WARN L672 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:08,681 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:08:08,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08 WrapperNode [2023-11-06 23:08:08,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:08,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:08,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:08:08,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:08:08,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (1/1) ... [2023-11-06 23:08:08,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (1/1) ... [2023-11-06 23:08:08,915 INFO L138 Inliner]: procedures = 690, calls = 2619, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 792 [2023-11-06 23:08:08,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:08,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:08:08,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:08:08,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:08:08,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (1/1) ... [2023-11-06 23:08:08,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (1/1) ... [2023-11-06 23:08:08,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (1/1) ... [2023-11-06 23:08:08,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (1/1) ... [2023-11-06 23:08:09,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (1/1) ... [2023-11-06 23:08:09,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (1/1) ... [2023-11-06 23:08:09,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (1/1) ... [2023-11-06 23:08:09,038 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (1/1) ... [2023-11-06 23:08:09,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:08:09,064 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:08:09,064 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:08:09,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:08:09,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (1/1) ... [2023-11-06 23:08:09,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:09,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:09,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:08:09,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:08:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 23:08:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:08:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-06 23:08:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-06 23:08:09,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:08:09,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 23:08:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 23:08:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:08:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:08:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-06 23:08:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-06 23:08:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:08:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:08:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-06 23:08:09,154 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-06 23:08:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-06 23:08:09,154 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-06 23:08:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-06 23:08:09,198 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-06 23:08:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 23:08:09,198 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 23:08:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:08:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2023-11-06 23:08:09,199 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2023-11-06 23:08:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 23:08:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-06 23:08:09,199 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-06 23:08:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:08:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:08:09,518 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:08:09,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:08:11,359 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:08:11,367 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:08:11,368 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:08:11,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:11 BoogieIcfgContainer [2023-11-06 23:08:11,371 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:08:11,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:08:11,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:08:11,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:08:11,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:08:05" (1/3) ... [2023-11-06 23:08:11,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10186052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:08:11, skipping insertion in model container [2023-11-06 23:08:11,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:08" (2/3) ... [2023-11-06 23:08:11,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10186052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:08:11, skipping insertion in model container [2023-11-06 23:08:11,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:11" (3/3) ... [2023-11-06 23:08:11,382 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_eq_harness.i [2023-11-06 23:08:11,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:08:11,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:08:11,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:08:11,500 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1334bd66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:08:11,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:08:11,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-06 23:08:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 23:08:11,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:11,527 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-06 23:08:11,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:11,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1074851773, now seen corresponding path program 1 times [2023-11-06 23:08:11,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:11,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804435197] [2023-11-06 23:08:11,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:11,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:08:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 23:08:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 23:08:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 23:08:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 23:08:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-06 23:08:12,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:12,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804435197] [2023-11-06 23:08:12,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804435197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:12,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:12,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:08:12,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027200160] [2023-11-06 23:08:12,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:12,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:08:12,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:12,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:08:12,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:08:12,760 INFO L87 Difference]: Start difference. First operand has 87 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 23:08:13,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:13,280 INFO L93 Difference]: Finished difference Result 176 states and 252 transitions. [2023-11-06 23:08:13,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:08:13,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 65 [2023-11-06 23:08:13,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:13,294 INFO L225 Difference]: With dead ends: 176 [2023-11-06 23:08:13,294 INFO L226 Difference]: Without dead ends: 87 [2023-11-06 23:08:13,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:13,302 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 75 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:13,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 107 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:08:13,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-06 23:08:13,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2023-11-06 23:08:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 50 states have internal predecessors, (59), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-06 23:08:13,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2023-11-06 23:08:13,358 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 65 [2023-11-06 23:08:13,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:13,358 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2023-11-06 23:08:13,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 23:08:13,359 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2023-11-06 23:08:13,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 23:08:13,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:13,363 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-06 23:08:13,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:08:13,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:13,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:13,365 INFO L85 PathProgramCache]: Analyzing trace with hash 401511231, now seen corresponding path program 1 times [2023-11-06 23:08:13,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:13,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197759933] [2023-11-06 23:08:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:13,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:08:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 23:08:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 23:08:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 23:08:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 23:08:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-06 23:08:14,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:14,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197759933] [2023-11-06 23:08:14,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197759933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:14,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:14,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:08:14,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343695926] [2023-11-06 23:08:14,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:08:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:14,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:08:14,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:08:14,468 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-06 23:08:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:15,003 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2023-11-06 23:08:15,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:08:15,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 65 [2023-11-06 23:08:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:15,007 INFO L225 Difference]: With dead ends: 124 [2023-11-06 23:08:15,008 INFO L226 Difference]: Without dead ends: 90 [2023-11-06 23:08:15,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:08:15,010 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 77 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:15,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 161 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:08:15,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-06 23:08:15,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2023-11-06 23:08:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 50 states have (on average 1.22) internal successors, (61), 52 states have internal predecessors, (61), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (24), 24 states have call predecessors, (24), 23 states have call successors, (24) [2023-11-06 23:08:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2023-11-06 23:08:15,027 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 65 [2023-11-06 23:08:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:15,028 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2023-11-06 23:08:15,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-06 23:08:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2023-11-06 23:08:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 23:08:15,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:15,031 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-06 23:08:15,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:08:15,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:15,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:15,032 INFO L85 PathProgramCache]: Analyzing trace with hash 560902053, now seen corresponding path program 1 times [2023-11-06 23:08:15,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:15,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208220740] [2023-11-06 23:08:15,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:15,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:08:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 23:08:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 23:08:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 23:08:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 23:08:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-06 23:08:17,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:17,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208220740] [2023-11-06 23:08:17,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208220740] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:17,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895834303] [2023-11-06 23:08:17,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:17,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:17,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:17,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:17,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:08:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:18,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:08:18,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-06 23:08:18,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:18,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895834303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:18,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:08:18,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 18 [2023-11-06 23:08:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842006094] [2023-11-06 23:08:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:18,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:08:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:08:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:08:18,786 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 23:08:18,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:18,908 INFO L93 Difference]: Finished difference Result 132 states and 176 transitions. [2023-11-06 23:08:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:08:18,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2023-11-06 23:08:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:18,914 INFO L225 Difference]: With dead ends: 132 [2023-11-06 23:08:18,914 INFO L226 Difference]: Without dead ends: 116 [2023-11-06 23:08:18,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-11-06 23:08:18,916 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 18 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:18,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 494 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:08:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-06 23:08:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2023-11-06 23:08:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 58 states have (on average 1.206896551724138) internal successors, (70), 61 states have internal predecessors, (70), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (33), 30 states have call predecessors, (33), 29 states have call successors, (33) [2023-11-06 23:08:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2023-11-06 23:08:18,934 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 66 [2023-11-06 23:08:18,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:18,935 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2023-11-06 23:08:18,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 23:08:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2023-11-06 23:08:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 23:08:18,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:18,938 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-06 23:08:18,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:19,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:19,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:19,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:19,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1220340855, now seen corresponding path program 1 times [2023-11-06 23:08:19,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:19,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933764204] [2023-11-06 23:08:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:08:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 23:08:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 23:08:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 23:08:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 23:08:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-06 23:08:19,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:19,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933764204] [2023-11-06 23:08:19,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933764204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:19,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:19,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:08:19,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687907277] [2023-11-06 23:08:19,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:19,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:08:19,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:19,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:08:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:08:19,977 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 23:08:20,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:20,616 INFO L93 Difference]: Finished difference Result 168 states and 238 transitions. [2023-11-06 23:08:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:08:20,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 69 [2023-11-06 23:08:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:20,620 INFO L225 Difference]: With dead ends: 168 [2023-11-06 23:08:20,620 INFO L226 Difference]: Without dead ends: 136 [2023-11-06 23:08:20,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:08:20,622 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 81 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:20,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 212 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 23:08:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-06 23:08:20,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2023-11-06 23:08:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 75 states have internal predecessors, (88), 45 states have call successors, (45), 10 states have call predecessors, (45), 13 states have return successors, (55), 47 states have call predecessors, (55), 44 states have call successors, (55) [2023-11-06 23:08:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 188 transitions. [2023-11-06 23:08:20,659 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 188 transitions. Word has length 69 [2023-11-06 23:08:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:20,660 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 188 transitions. [2023-11-06 23:08:20,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 23:08:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 188 transitions. [2023-11-06 23:08:20,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 23:08:20,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:20,666 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-06 23:08:20,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:08:20,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:20,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:20,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1527144091, now seen corresponding path program 1 times [2023-11-06 23:08:20,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:20,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561690186] [2023-11-06 23:08:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:20,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:08:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 23:08:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 23:08:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 23:08:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 23:08:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-06 23:08:21,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:21,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561690186] [2023-11-06 23:08:21,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561690186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:21,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:21,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:08:21,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327261023] [2023-11-06 23:08:21,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:21,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:08:21,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:21,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:08:21,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:08:21,583 INFO L87 Difference]: Start difference. First operand 132 states and 188 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 23:08:22,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:22,340 INFO L93 Difference]: Finished difference Result 153 states and 216 transitions. [2023-11-06 23:08:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:08:22,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 70 [2023-11-06 23:08:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:22,344 INFO L225 Difference]: With dead ends: 153 [2023-11-06 23:08:22,344 INFO L226 Difference]: Without dead ends: 126 [2023-11-06 23:08:22,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:08:22,345 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 93 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:22,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 260 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:08:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-06 23:08:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2023-11-06 23:08:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 71 states have internal predecessors, (82), 39 states have call successors, (39), 10 states have call predecessors, (39), 13 states have return successors, (47), 41 states have call predecessors, (47), 38 states have call successors, (47) [2023-11-06 23:08:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions. [2023-11-06 23:08:22,380 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 70 [2023-11-06 23:08:22,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:22,380 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 168 transitions. [2023-11-06 23:08:22,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 23:08:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions. [2023-11-06 23:08:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-06 23:08:22,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:22,383 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:22,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:08:22,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:22,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:22,384 INFO L85 PathProgramCache]: Analyzing trace with hash -343504052, now seen corresponding path program 1 times [2023-11-06 23:08:22,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:22,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752950613] [2023-11-06 23:08:22,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:22,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:08:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 23:08:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 23:08:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 23:08:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 23:08:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 23:08:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-06 23:08:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-06 23:08:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:25,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-06 23:08:25,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:25,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752950613] [2023-11-06 23:08:25,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752950613] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:25,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344703049] [2023-11-06 23:08:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:25,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:25,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:25,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:25,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:08:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:25,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 23:08:25,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-06 23:08:26,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:26,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344703049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:26,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:08:26,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 17 [2023-11-06 23:08:26,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929336684] [2023-11-06 23:08:26,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:26,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:08:26,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:26,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:08:26,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:08:26,151 INFO L87 Difference]: Start difference. First operand 122 states and 168 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 23:08:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:26,386 INFO L93 Difference]: Finished difference Result 173 states and 230 transitions. [2023-11-06 23:08:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:08:26,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2023-11-06 23:08:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:26,393 INFO L225 Difference]: With dead ends: 173 [2023-11-06 23:08:26,393 INFO L226 Difference]: Without dead ends: 119 [2023-11-06 23:08:26,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-11-06 23:08:26,396 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 16 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:26,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 744 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:08:26,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-06 23:08:26,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-11-06 23:08:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 69 states have internal predecessors, (79), 39 states have call successors, (39), 10 states have call predecessors, (39), 12 states have return successors, (44), 40 states have call predecessors, (44), 38 states have call successors, (44) [2023-11-06 23:08:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2023-11-06 23:08:26,420 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 82 [2023-11-06 23:08:26,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:26,421 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2023-11-06 23:08:26,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 23:08:26,421 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2023-11-06 23:08:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-06 23:08:26,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:26,429 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:26,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:26,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 23:08:26,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:26,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:26,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1399306283, now seen corresponding path program 1 times [2023-11-06 23:08:26,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:26,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512150933] [2023-11-06 23:08:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:26,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:08:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 23:08:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 23:08:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 23:08:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 23:08:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 23:08:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-06 23:08:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-06 23:08:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-06 23:08:28,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:28,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512150933] [2023-11-06 23:08:28,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512150933] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:28,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285828603] [2023-11-06 23:08:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:28,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:28,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:28,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:28,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:08:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:29,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-06 23:08:29,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-06 23:08:30,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-06 23:08:31,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285828603] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:08:31,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:08:31,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 30 [2023-11-06 23:08:31,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004988218] [2023-11-06 23:08:31,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:08:31,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 23:08:31,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:31,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 23:08:31,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2023-11-06 23:08:31,158 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 30 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 13 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (35), 12 states have call predecessors, (35), 12 states have call successors, (35) [2023-11-06 23:08:34,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:34,129 INFO L93 Difference]: Finished difference Result 236 states and 347 transitions. [2023-11-06 23:08:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 23:08:34,130 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 13 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (35), 12 states have call predecessors, (35), 12 states have call successors, (35) Word has length 82 [2023-11-06 23:08:34,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:34,133 INFO L225 Difference]: With dead ends: 236 [2023-11-06 23:08:34,133 INFO L226 Difference]: Without dead ends: 164 [2023-11-06 23:08:34,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=329, Invalid=2641, Unknown=0, NotChecked=0, Total=2970 [2023-11-06 23:08:34,136 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 170 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:34,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 807 Invalid, 1909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1756 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 23:08:34,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-06 23:08:34,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 144. [2023-11-06 23:08:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 82 states have internal predecessors, (92), 50 states have call successors, (50), 11 states have call predecessors, (50), 14 states have return successors, (61), 51 states have call predecessors, (61), 48 states have call successors, (61) [2023-11-06 23:08:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 203 transitions. [2023-11-06 23:08:34,172 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 203 transitions. Word has length 82 [2023-11-06 23:08:34,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:34,172 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 203 transitions. [2023-11-06 23:08:34,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 13 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (35), 12 states have call predecessors, (35), 12 states have call successors, (35) [2023-11-06 23:08:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 203 transitions. [2023-11-06 23:08:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-06 23:08:34,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:34,177 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2023-11-06 23:08:34,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:34,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 23:08:34,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:34,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash -374309381, now seen corresponding path program 1 times [2023-11-06 23:08:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:34,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251723943] [2023-11-06 23:08:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:08:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 23:08:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 23:08:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 23:08:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 23:08:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 23:08:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 23:08:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 23:08:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 23:08:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-06 23:08:35,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:35,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251723943] [2023-11-06 23:08:35,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251723943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:35,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117831953] [2023-11-06 23:08:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:35,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:35,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:35,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:35,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:08:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:36,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-06 23:08:36,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 5 proven. 68 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-06 23:08:36,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-06 23:08:38,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117831953] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:38,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:08:38,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10, 17] total 37 [2023-11-06 23:08:38,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564056660] [2023-11-06 23:08:38,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:38,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 23:08:38,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:38,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 23:08:38,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 23:08:38,154 INFO L87 Difference]: Start difference. First operand 144 states and 203 transitions. Second operand has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-06 23:08:39,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:39,782 INFO L93 Difference]: Finished difference Result 220 states and 315 transitions. [2023-11-06 23:08:39,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 23:08:39,783 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) Word has length 100 [2023-11-06 23:08:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:39,786 INFO L225 Difference]: With dead ends: 220 [2023-11-06 23:08:39,786 INFO L226 Difference]: Without dead ends: 172 [2023-11-06 23:08:39,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 200 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=182, Invalid=2268, Unknown=0, NotChecked=0, Total=2450 [2023-11-06 23:08:39,789 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 138 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:39,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 949 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:08:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-06 23:08:39,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 146. [2023-11-06 23:08:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 80 states have (on average 1.1625) internal successors, (93), 83 states have internal predecessors, (93), 51 states have call successors, (51), 11 states have call predecessors, (51), 14 states have return successors, (61), 52 states have call predecessors, (61), 49 states have call successors, (61) [2023-11-06 23:08:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 205 transitions. [2023-11-06 23:08:39,841 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 205 transitions. Word has length 100 [2023-11-06 23:08:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:39,843 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 205 transitions. [2023-11-06 23:08:39,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-06 23:08:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 205 transitions. [2023-11-06 23:08:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 23:08:39,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:39,851 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-06 23:08:39,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 23:08:40,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 23:08:40,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:40,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:40,063 INFO L85 PathProgramCache]: Analyzing trace with hash 207953017, now seen corresponding path program 1 times [2023-11-06 23:08:40,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:40,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930813243] [2023-11-06 23:08:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:40,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-06 23:08:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 23:08:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 23:08:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 23:08:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 23:08:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-06 23:08:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 23:08:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-06 23:08:41,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:41,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930813243] [2023-11-06 23:08:41,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930813243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:41,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:41,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 23:08:41,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330874564] [2023-11-06 23:08:41,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:41,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 23:08:41,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 23:08:41,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:08:41,854 INFO L87 Difference]: Start difference. First operand 146 states and 205 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 11 states have internal predecessors, (37), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-06 23:08:43,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:43,431 INFO L93 Difference]: Finished difference Result 225 states and 315 transitions. [2023-11-06 23:08:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 23:08:43,432 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 11 states have internal predecessors, (37), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 87 [2023-11-06 23:08:43,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:43,434 INFO L225 Difference]: With dead ends: 225 [2023-11-06 23:08:43,434 INFO L226 Difference]: Without dead ends: 193 [2023-11-06 23:08:43,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2023-11-06 23:08:43,436 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 141 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:43,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 511 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 23:08:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-06 23:08:43,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 151. [2023-11-06 23:08:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 84 states have internal predecessors, (95), 55 states have call successors, (55), 11 states have call predecessors, (55), 14 states have return successors, (66), 56 states have call predecessors, (66), 53 states have call successors, (66) [2023-11-06 23:08:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 216 transitions. [2023-11-06 23:08:43,481 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 216 transitions. Word has length 87 [2023-11-06 23:08:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:43,481 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 216 transitions. [2023-11-06 23:08:43,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 11 states have internal predecessors, (37), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-06 23:08:43,482 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 216 transitions. [2023-11-06 23:08:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-06 23:08:43,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:43,487 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:43,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:08:43,488 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:43,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1683287816, now seen corresponding path program 1 times [2023-11-06 23:08:43,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:43,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054832890] [2023-11-06 23:08:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:43,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:08:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 23:08:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 23:08:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 23:08:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 23:08:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 23:08:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 23:08:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 23:08:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-06 23:08:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 23:08:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-06 23:08:44,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:44,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054832890] [2023-11-06 23:08:44,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054832890] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:44,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983953308] [2023-11-06 23:08:44,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:44,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:44,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:44,582 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:44,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:08:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:45,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 23:08:45,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-06 23:08:45,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-06 23:08:45,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983953308] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:08:45,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:08:45,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 11 [2023-11-06 23:08:45,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580226989] [2023-11-06 23:08:45,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:08:45,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 23:08:45,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 23:08:45,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:08:45,465 INFO L87 Difference]: Start difference. First operand 151 states and 216 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-06 23:08:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:46,339 INFO L93 Difference]: Finished difference Result 199 states and 268 transitions. [2023-11-06 23:08:46,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:08:46,340 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 107 [2023-11-06 23:08:46,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:46,342 INFO L225 Difference]: With dead ends: 199 [2023-11-06 23:08:46,342 INFO L226 Difference]: Without dead ends: 153 [2023-11-06 23:08:46,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:08:46,344 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 82 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:46,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 412 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 23:08:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-06 23:08:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 144. [2023-11-06 23:08:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 82 states have internal predecessors, (92), 50 states have call successors, (50), 11 states have call predecessors, (50), 14 states have return successors, (59), 51 states have call predecessors, (59), 48 states have call successors, (59) [2023-11-06 23:08:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 201 transitions. [2023-11-06 23:08:46,372 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 201 transitions. Word has length 107 [2023-11-06 23:08:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:46,372 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 201 transitions. [2023-11-06 23:08:46,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-06 23:08:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 201 transitions. [2023-11-06 23:08:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-06 23:08:46,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:46,375 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-06 23:08:46,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:46,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 23:08:46,585 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:46,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:46,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2143612696, now seen corresponding path program 1 times [2023-11-06 23:08:46,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:46,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14748998] [2023-11-06 23:08:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:46,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-06 23:08:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 23:08:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 23:08:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 23:08:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 23:08:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-06 23:08:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-06 23:08:47,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:47,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14748998] [2023-11-06 23:08:47,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14748998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:47,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:47,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 23:08:47,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789058988] [2023-11-06 23:08:47,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:47,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 23:08:47,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:47,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 23:08:47,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:08:47,677 INFO L87 Difference]: Start difference. First operand 144 states and 201 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-06 23:08:48,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:48,555 INFO L93 Difference]: Finished difference Result 188 states and 260 transitions. [2023-11-06 23:08:48,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:08:48,556 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 81 [2023-11-06 23:08:48,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:48,558 INFO L225 Difference]: With dead ends: 188 [2023-11-06 23:08:48,558 INFO L226 Difference]: Without dead ends: 160 [2023-11-06 23:08:48,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:08:48,559 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 103 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:48,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 372 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 23:08:48,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-06 23:08:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2023-11-06 23:08:48,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 84 states have (on average 1.1547619047619047) internal successors, (97), 86 states have internal predecessors, (97), 49 states have call successors, (49), 11 states have call predecessors, (49), 14 states have return successors, (54), 51 states have call predecessors, (54), 47 states have call successors, (54) [2023-11-06 23:08:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 200 transitions. [2023-11-06 23:08:48,624 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 200 transitions. Word has length 81 [2023-11-06 23:08:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:48,624 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 200 transitions. [2023-11-06 23:08:48,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-06 23:08:48,625 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 200 transitions. [2023-11-06 23:08:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 23:08:48,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:48,627 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:48,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:08:48,627 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:48,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:48,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1066644358, now seen corresponding path program 1 times [2023-11-06 23:08:48,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:48,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030902320] [2023-11-06 23:08:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:48,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-06 23:08:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 23:08:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 23:08:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 23:08:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 23:08:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 23:08:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 23:08:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-06 23:08:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:08:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-06 23:08:49,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:49,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030902320] [2023-11-06 23:08:49,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030902320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:49,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:49,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:08:49,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420061087] [2023-11-06 23:08:49,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:49,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:08:49,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:49,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:08:49,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:49,872 INFO L87 Difference]: Start difference. First operand 148 states and 200 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 23:08:50,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:50,366 INFO L93 Difference]: Finished difference Result 167 states and 221 transitions. [2023-11-06 23:08:50,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:08:50,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 94 [2023-11-06 23:08:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:50,369 INFO L225 Difference]: With dead ends: 167 [2023-11-06 23:08:50,369 INFO L226 Difference]: Without dead ends: 150 [2023-11-06 23:08:50,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:08:50,370 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 89 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:50,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 148 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:08:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-06 23:08:50,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2023-11-06 23:08:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 86 states have internal predecessors, (96), 49 states have call successors, (49), 11 states have call predecessors, (49), 14 states have return successors, (53), 50 states have call predecessors, (53), 47 states have call successors, (53) [2023-11-06 23:08:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 198 transitions. [2023-11-06 23:08:50,399 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 198 transitions. Word has length 94 [2023-11-06 23:08:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:50,400 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 198 transitions. [2023-11-06 23:08:50,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 23:08:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 198 transitions. [2023-11-06 23:08:50,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 23:08:50,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:50,402 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2023-11-06 23:08:50,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:08:50,403 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:50,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash -522577770, now seen corresponding path program 1 times [2023-11-06 23:08:50,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:50,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286822936] [2023-11-06 23:08:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:09:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:09:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:09:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 23:09:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 23:09:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:09:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 23:09:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 23:09:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:08,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 23:09:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 23:09:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 23:09:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:08,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 23:09:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:08,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 23:09:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-06 23:09:08,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:08,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286822936] [2023-11-06 23:09:08,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286822936] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:08,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750494036] [2023-11-06 23:09:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:08,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:08,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:08,963 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:08,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4a5a65c-7ea9-422f-b832-0d04e84ee14f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:09:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:09,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 2586 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-06 23:09:09,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:10,254 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 23:09:10,339 INFO L322 Elim1Store]: treesize reduction 80, result has 30.4 percent of original size [2023-11-06 23:09:10,339 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 84 treesize of output 89 [2023-11-06 23:09:12,679 WARN L861 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_7| Int)) (and (not (= |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_7| 0)) (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_4| Int)) (let ((.cse1 (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_4|))) (let ((.cse0 (mod (select .cse1 0) 18446744073709551616))) (and (<= .cse0 9223372036854775807) (<= (+ 2 |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_4|) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_7|) .cse0) (select .cse1 8)))))))) (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_7| Int)) (and (not (= |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_7| 0)) (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_4| Int)) (let ((.cse3 (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_4|))) (let ((.cse2 (mod (select .cse3 0) 18446744073709551616))) (and (<= (+ 2 |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_4|) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_7|) (+ (- 18446744073709551616) .cse2)) (select .cse3 8)) (<= 9223372036854775808 .cse2)))))))) is different from true [2023-11-06 23:09:15,189 WARN L861 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_8| Int)) (and (not (= |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_8| 0)) (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_5| Int)) (let ((.cse1 (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_5|))) (let ((.cse0 (mod (select .cse1 0) 18446744073709551616))) (and (<= 9223372036854775808 .cse0) (= (select .cse1 8) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_8|) (+ .cse0 (- 18446744073709551616)))) (<= (+ 2 |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_8|) |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_5|))))))) (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_8| Int)) (and (not (= |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_8| 0)) (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_5| Int)) (let ((.cse3 (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_5|))) (let ((.cse2 (mod (select .cse3 0) 18446744073709551616))) (and (<= .cse2 9223372036854775807) (<= (+ 2 |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_8|) |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_5|) (= (select .cse3 8) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_8|) .cse2))))))))) is different from true [2023-11-06 23:09:20,021 WARN L861 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_9| Int)) (and (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_6| Int)) (let ((.cse1 (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_6|))) (let ((.cse0 (mod (select .cse1 0) 18446744073709551616))) (and (<= (+ 2 |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_9|) |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_6|) (<= .cse0 9223372036854775807) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_9|) .cse0) (select .cse1 8)))))) (not (= |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_9| 0)))) (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_9| Int)) (and (exists ((|v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_6| Int)) (let ((.cse3 (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_6|))) (let ((.cse2 (mod (select .cse3 0) 18446744073709551616))) (and (<= (+ 2 |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_9|) |v_ULTIMATE.start_aws_array_eq_harness_~#old_byte_from_rhs~0#1.base_BEFORE_CALL_6|) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_9|) (+ .cse2 (- 18446744073709551616))) (select .cse3 8)) (<= 9223372036854775808 .cse2))))) (not (= |v_ULTIMATE.start_aws_array_eq_harness_~rhs~0#1.base_BEFORE_CALL_9| 0))))) is different from true [2023-11-06 23:09:21,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:21,174 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 23:09:21,174 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 54 [2023-11-06 23:09:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 20 not checked. [2023-11-06 23:09:21,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:22,483 INFO L322 Elim1Store]: treesize reduction 699, result has 0.1 percent of original size [2023-11-06 23:09:22,484 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 154 treesize of output 1 [2023-11-06 23:09:26,188 INFO L322 Elim1Store]: treesize reduction 84, result has 80.9 percent of original size [2023-11-06 23:09:26,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 51111 treesize of output 37311