./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_clean_up_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_clean_up_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:55:10,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:55:10,252 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:55:10,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:55:10,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:55:10,279 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:55:10,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:55:10,280 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:55:10,281 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:55:10,284 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:55:10,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:55:10,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:55:10,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:55:10,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:55:10,286 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:55:10,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:55:10,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:55:10,286 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:55:10,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:55:10,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:55:10,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:55:10,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:55:10,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:55:10,288 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:55:10,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:55:10,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:55:10,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:55:10,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:55:10,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:55:10,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:55:10,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:55:10,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:55:10,290 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:55:10,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:55:10,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:55:10,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:55:10,291 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:55:10,291 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:55:10,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:55:10,292 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 07:55:10,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:55:10,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:55:10,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:55:10,501 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:55:10,501 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:55:10,503 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_list_clean_up_harness.i [2023-11-23 07:55:11,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:55:11,783 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:55:11,783 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_clean_up_harness.i [2023-11-23 07:55:11,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee654f460/e3eeb4daef4c40738c138e67a8e9c1f6/FLAG620ed2219 [2023-11-23 07:55:11,823 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee654f460/e3eeb4daef4c40738c138e67a8e9c1f6 [2023-11-23 07:55:11,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:55:11,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:55:11,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:55:11,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:55:11,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:55:11,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:55:11" (1/1) ... [2023-11-23 07:55:11,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dad1645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:11, skipping insertion in model container [2023-11-23 07:55:11,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:55:11" (1/1) ... [2023-11-23 07:55:11,925 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:55:12,096 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2023-11-23 07:55:12,102 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2023-11-23 07:55:12,577 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,578 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,578 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,578 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,579 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,591 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,592 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,593 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,594 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,595 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,595 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,596 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,596 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,763 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:55:12,763 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:55:12,764 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:55:12,765 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:55:12,766 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:55:12,766 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:55:12,767 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:55:12,767 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:55:12,768 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:55:12,768 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:55:12,841 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,856 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:55:12,937 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:55:12,946 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2023-11-23 07:55:12,947 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2023-11-23 07:55:12,978 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,978 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,978 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,979 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,979 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,983 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,983 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,984 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,984 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,984 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,985 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,985 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:12,985 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:13,020 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:55:13,021 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:55:13,022 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:55:13,022 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:55:13,024 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:55:13,025 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:55:13,026 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:55:13,026 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:55:13,027 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:55:13,027 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:55:13,041 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:13,044 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:55:13,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7529-7540] [2023-11-23 07:55:13,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:55:13,266 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,267 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,267 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,267 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,268 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,268 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,268 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,268 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,268 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,269 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,269 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,269 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,269 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,269 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,270 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:55:13,275 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:55:13,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13 WrapperNode [2023-11-23 07:55:13,276 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:55:13,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:55:13,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:55:13,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:55:13,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (1/1) ... [2023-11-23 07:55:13,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (1/1) ... [2023-11-23 07:55:13,411 INFO L138 Inliner]: procedures = 689, calls = 1554, calls flagged for inlining = 48, calls inlined = 7, statements flattened = 578 [2023-11-23 07:55:13,413 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:55:13,414 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:55:13,414 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:55:13,414 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:55:13,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (1/1) ... [2023-11-23 07:55:13,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (1/1) ... [2023-11-23 07:55:13,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (1/1) ... [2023-11-23 07:55:13,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (1/1) ... [2023-11-23 07:55:13,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (1/1) ... [2023-11-23 07:55:13,478 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (1/1) ... [2023-11-23 07:55:13,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (1/1) ... [2023-11-23 07:55:13,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (1/1) ... [2023-11-23 07:55:13,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:55:13,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:55:13,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:55:13,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:55:13,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (1/1) ... [2023-11-23 07:55:13,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:55:13,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:13,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:55:13,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:55:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 07:55:13,584 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 07:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 07:55:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 07:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 07:55:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 07:55:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:55:13,586 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:55:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 07:55:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 07:55:13,586 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 07:55:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:55:13,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:55:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:55:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:55:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 07:55:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:55:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:55:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:55:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:55:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 07:55:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 07:55:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 07:55:13,589 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 07:55:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 07:55:13,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 07:55:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:55:13,589 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:55:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:55:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 07:55:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 07:55:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 07:55:13,590 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 07:55:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 07:55:13,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 07:55:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 07:55:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 07:55:13,835 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:55:13,837 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:55:14,283 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:55:14,362 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:55:14,362 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 07:55:14,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:55:14 BoogieIcfgContainer [2023-11-23 07:55:14,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:55:14,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:55:14,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:55:14,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:55:14,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:55:11" (1/3) ... [2023-11-23 07:55:14,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e41d49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:55:14, skipping insertion in model container [2023-11-23 07:55:14,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:55:13" (2/3) ... [2023-11-23 07:55:14,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e41d49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:55:14, skipping insertion in model container [2023-11-23 07:55:14,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:55:14" (3/3) ... [2023-11-23 07:55:14,371 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_clean_up_harness.i [2023-11-23 07:55:14,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:55:14,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:55:14,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:55:14,434 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1377a78f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:55:14,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:55:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 64 states have (on average 1.3125) internal successors, (84), 64 states have internal predecessors, (84), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-23 07:55:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 07:55:14,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:14,447 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-23 07:55:14,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:14,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:14,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1177210511, now seen corresponding path program 1 times [2023-11-23 07:55:14,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:14,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835599604] [2023-11-23 07:55:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:14,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:55:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:14,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:55:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:14,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:55:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:14,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:55:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:14,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:55:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:14,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:55:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:14,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:55:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:14,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:55:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:55:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 07:55:14,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:14,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835599604] [2023-11-23 07:55:14,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835599604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:55:14,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:55:14,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 07:55:14,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583877638] [2023-11-23 07:55:14,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:55:14,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 07:55:14,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:15,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 07:55:15,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 07:55:15,020 INFO L87 Difference]: Start difference. First operand has 100 states, 64 states have (on average 1.3125) internal successors, (84), 64 states have internal predecessors, (84), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 07:55:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:55:15,442 INFO L93 Difference]: Finished difference Result 201 states and 270 transitions. [2023-11-23 07:55:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 07:55:15,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 62 [2023-11-23 07:55:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:55:15,451 INFO L225 Difference]: With dead ends: 201 [2023-11-23 07:55:15,451 INFO L226 Difference]: Without dead ends: 102 [2023-11-23 07:55:15,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 07:55:15,455 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 30 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:55:15,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 113 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:55:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-23 07:55:15,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2023-11-23 07:55:15,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 61 states have internal predecessors, (76), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-23 07:55:15,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2023-11-23 07:55:15,489 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 62 [2023-11-23 07:55:15,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:55:15,489 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2023-11-23 07:55:15,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 07:55:15,490 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2023-11-23 07:55:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 07:55:15,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:15,492 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-23 07:55:15,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 07:55:15,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:15,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:15,493 INFO L85 PathProgramCache]: Analyzing trace with hash 724810228, now seen corresponding path program 1 times [2023-11-23 07:55:15,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:15,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387969948] [2023-11-23 07:55:15,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:15,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:55:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:55:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:15,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:55:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:15,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:55:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:55:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:15,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:55:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:15,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:55:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:55:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:55:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:15,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:55:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 07:55:15,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:15,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387969948] [2023-11-23 07:55:15,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387969948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:55:15,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:55:15,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 07:55:15,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909849052] [2023-11-23 07:55:15,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:55:15,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:55:15,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:15,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:55:15,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:55:15,993 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:55:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:55:16,740 INFO L93 Difference]: Finished difference Result 180 states and 224 transitions. [2023-11-23 07:55:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:55:16,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 67 [2023-11-23 07:55:16,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:55:16,745 INFO L225 Difference]: With dead ends: 180 [2023-11-23 07:55:16,745 INFO L226 Difference]: Without dead ends: 113 [2023-11-23 07:55:16,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:55:16,748 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 83 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:55:16,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 263 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 07:55:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-23 07:55:16,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 98. [2023-11-23 07:55:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 63 states have internal predecessors, (77), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-23 07:55:16,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2023-11-23 07:55:16,768 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 67 [2023-11-23 07:55:16,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:55:16,769 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2023-11-23 07:55:16,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:55:16,769 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2023-11-23 07:55:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 07:55:16,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:16,774 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-23 07:55:16,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 07:55:16,775 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:16,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:16,775 INFO L85 PathProgramCache]: Analyzing trace with hash 643461203, now seen corresponding path program 1 times [2023-11-23 07:55:16,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:16,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28994346] [2023-11-23 07:55:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:16,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:16,824 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:55:16,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471926592] [2023-11-23 07:55:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:16,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:16,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:16,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:55:16,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 07:55:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:17,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 2111 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 07:55:17,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:55:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 07:55:17,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:55:17,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:17,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28994346] [2023-11-23 07:55:17,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:55:17,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471926592] [2023-11-23 07:55:17,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471926592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:55:17,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:55:17,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 07:55:17,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053089562] [2023-11-23 07:55:17,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:55:17,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:55:17,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:17,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:55:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:55:17,258 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 07:55:17,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:55:17,475 INFO L93 Difference]: Finished difference Result 173 states and 212 transitions. [2023-11-23 07:55:17,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:55:17,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 80 [2023-11-23 07:55:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:55:17,476 INFO L225 Difference]: With dead ends: 173 [2023-11-23 07:55:17,476 INFO L226 Difference]: Without dead ends: 106 [2023-11-23 07:55:17,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:55:17,478 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 4 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:55:17,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 731 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:55:17,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-23 07:55:17,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2023-11-23 07:55:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 66 states have internal predecessors, (80), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2023-11-23 07:55:17,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2023-11-23 07:55:17,485 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 80 [2023-11-23 07:55:17,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:55:17,485 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2023-11-23 07:55:17,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 07:55:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2023-11-23 07:55:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 07:55:17,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:17,489 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:55:17,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 07:55:17,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:17,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:17,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:17,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2083443894, now seen corresponding path program 1 times [2023-11-23 07:55:17,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:17,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564820971] [2023-11-23 07:55:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:17,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:17,731 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:55:17,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879319483] [2023-11-23 07:55:17,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:17,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:17,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:17,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:55:17,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 07:55:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:18,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 07:55:18,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:55:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 07:55:18,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:55:18,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:18,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564820971] [2023-11-23 07:55:18,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:55:18,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879319483] [2023-11-23 07:55:18,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879319483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:55:18,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:55:18,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:55:18,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647311467] [2023-11-23 07:55:18,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:55:18,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:55:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:18,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:55:18,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:55:18,084 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 07:55:18,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:55:18,290 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2023-11-23 07:55:18,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:55:18,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 80 [2023-11-23 07:55:18,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:55:18,291 INFO L225 Difference]: With dead ends: 121 [2023-11-23 07:55:18,291 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 07:55:18,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:55:18,292 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 1 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:55:18,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 322 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:55:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 07:55:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-23 07:55:18,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 67 states have internal predecessors, (81), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2023-11-23 07:55:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2023-11-23 07:55:18,298 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 80 [2023-11-23 07:55:18,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:55:18,298 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2023-11-23 07:55:18,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 07:55:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2023-11-23 07:55:18,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 07:55:18,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:18,299 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:55:18,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:55:18,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-23 07:55:18,513 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:18,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:18,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1493120392, now seen corresponding path program 1 times [2023-11-23 07:55:18,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:18,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832686319] [2023-11-23 07:55:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:18,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:18,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:55:18,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885249464] [2023-11-23 07:55:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:18,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:18,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:18,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:55:18,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 07:55:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:18,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 2133 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:55:18,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:55:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 07:55:18,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:55:18,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:18,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832686319] [2023-11-23 07:55:18,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:55:18,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885249464] [2023-11-23 07:55:18,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885249464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:55:18,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:55:18,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:55:18,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762956392] [2023-11-23 07:55:18,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:55:18,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:55:18,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:18,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:55:18,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:55:18,879 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 07:55:19,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:55:19,129 INFO L93 Difference]: Finished difference Result 152 states and 184 transitions. [2023-11-23 07:55:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:55:19,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 81 [2023-11-23 07:55:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:55:19,130 INFO L225 Difference]: With dead ends: 152 [2023-11-23 07:55:19,130 INFO L226 Difference]: Without dead ends: 107 [2023-11-23 07:55:19,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:55:19,131 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 6 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:55:19,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 310 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:55:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-23 07:55:19,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2023-11-23 07:55:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 68 states have internal predecessors, (82), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2023-11-23 07:55:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 127 transitions. [2023-11-23 07:55:19,138 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 127 transitions. Word has length 81 [2023-11-23 07:55:19,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:55:19,138 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 127 transitions. [2023-11-23 07:55:19,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 07:55:19,139 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 127 transitions. [2023-11-23 07:55:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 07:55:19,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:19,139 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:55:19,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:55:19,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:19,354 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:19,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:19,354 INFO L85 PathProgramCache]: Analyzing trace with hash 621006959, now seen corresponding path program 1 times [2023-11-23 07:55:19,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:19,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34716020] [2023-11-23 07:55:19,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:19,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:19,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:55:19,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744340073] [2023-11-23 07:55:19,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:19,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:19,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:19,418 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:55:19,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 07:55:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:19,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 2136 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 07:55:19,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:55:19,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:55:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 07:55:20,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:55:20,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-11-23 07:55:20,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-11-23 07:55:20,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-11-23 07:55:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 07:55:20,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:20,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34716020] [2023-11-23 07:55:20,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:55:20,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744340073] [2023-11-23 07:55:20,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744340073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:55:20,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:55:20,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2023-11-23 07:55:20,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731254031] [2023-11-23 07:55:20,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:55:20,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 07:55:20,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:20,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 07:55:20,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:55:20,405 INFO L87 Difference]: Start difference. First operand 104 states and 127 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 5 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 07:55:22,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:55:22,031 INFO L93 Difference]: Finished difference Result 171 states and 212 transitions. [2023-11-23 07:55:22,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 07:55:22,032 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 5 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 81 [2023-11-23 07:55:22,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:55:22,033 INFO L225 Difference]: With dead ends: 171 [2023-11-23 07:55:22,034 INFO L226 Difference]: Without dead ends: 166 [2023-11-23 07:55:22,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2023-11-23 07:55:22,034 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 110 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:55:22,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1279 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 07:55:22,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-23 07:55:22,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 159. [2023-11-23 07:55:22,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 109 states have internal predecessors, (132), 29 states have call successors, (29), 18 states have call predecessors, (29), 23 states have return successors, (37), 31 states have call predecessors, (37), 28 states have call successors, (37) [2023-11-23 07:55:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 198 transitions. [2023-11-23 07:55:22,046 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 198 transitions. Word has length 81 [2023-11-23 07:55:22,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:55:22,046 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 198 transitions. [2023-11-23 07:55:22,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 5 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 07:55:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 198 transitions. [2023-11-23 07:55:22,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-23 07:55:22,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:22,048 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:55:22,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 07:55:22,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:22,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:22,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:22,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1952628945, now seen corresponding path program 1 times [2023-11-23 07:55:22,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:22,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100936817] [2023-11-23 07:55:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:22,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:22,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:55:22,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871346203] [2023-11-23 07:55:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:22,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:22,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:22,308 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:55:22,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 07:55:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:22,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 07:55:22,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:55:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 07:55:22,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:55:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:55:22,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:22,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100936817] [2023-11-23 07:55:22,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:55:22,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871346203] [2023-11-23 07:55:22,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871346203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:55:22,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:55:22,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 07:55:22,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821771011] [2023-11-23 07:55:22,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:55:22,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:55:22,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:22,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:55:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:55:22,716 INFO L87 Difference]: Start difference. First operand 159 states and 198 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 07:55:22,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:55:22,947 INFO L93 Difference]: Finished difference Result 185 states and 227 transitions. [2023-11-23 07:55:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:55:22,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 83 [2023-11-23 07:55:22,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:55:22,949 INFO L225 Difference]: With dead ends: 185 [2023-11-23 07:55:22,949 INFO L226 Difference]: Without dead ends: 162 [2023-11-23 07:55:22,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:55:22,950 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 1 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:55:22,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 429 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:55:22,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-23 07:55:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-23 07:55:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 109 states have (on average 1.238532110091743) internal successors, (135), 112 states have internal predecessors, (135), 29 states have call successors, (29), 18 states have call predecessors, (29), 23 states have return successors, (37), 31 states have call predecessors, (37), 28 states have call successors, (37) [2023-11-23 07:55:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 201 transitions. [2023-11-23 07:55:22,959 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 201 transitions. Word has length 83 [2023-11-23 07:55:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:55:22,960 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 201 transitions. [2023-11-23 07:55:22,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 07:55:22,960 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 201 transitions. [2023-11-23 07:55:22,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 07:55:22,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:22,961 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:55:22,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:55:23,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:23,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:23,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash -122624205, now seen corresponding path program 2 times [2023-11-23 07:55:23,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:23,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437585314] [2023-11-23 07:55:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:23,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:23,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:55:23,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378234830] [2023-11-23 07:55:23,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:55:23,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:23,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:23,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:55:23,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 07:55:23,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:55:23,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:55:23,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 2200 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-23 07:55:23,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:55:23,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:55:23,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 07:55:23,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:55:23,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 07:55:23,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:55:23,689 INFO L378 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 07:55:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 07:55:24,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:55:24,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 89 [2023-11-23 07:55:24,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-11-23 07:55:24,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-11-23 07:55:24,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2023-11-23 07:55:24,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2023-11-23 07:55:24,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-11-23 07:55:24,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2023-11-23 07:55:24,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-11-23 07:55:24,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2023-11-23 07:55:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 07:55:24,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:24,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437585314] [2023-11-23 07:55:24,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:55:24,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378234830] [2023-11-23 07:55:24,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378234830] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:55:24,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:55:24,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2023-11-23 07:55:25,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113638835] [2023-11-23 07:55:25,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:55:25,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 07:55:25,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 07:55:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2023-11-23 07:55:25,001 INFO L87 Difference]: Start difference. First operand 162 states and 201 transitions. Second operand has 28 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 25 states have internal predecessors, (75), 7 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-23 07:55:27,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:55:27,482 INFO L93 Difference]: Finished difference Result 197 states and 241 transitions. [2023-11-23 07:55:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 07:55:27,482 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 25 states have internal predecessors, (75), 7 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) Word has length 86 [2023-11-23 07:55:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:55:27,484 INFO L225 Difference]: With dead ends: 197 [2023-11-23 07:55:27,484 INFO L226 Difference]: Without dead ends: 182 [2023-11-23 07:55:27,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 07:55:27,485 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 42 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:55:27,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1513 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 07:55:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-23 07:55:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2023-11-23 07:55:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 115 states have (on average 1.2260869565217392) internal successors, (141), 117 states have internal predecessors, (141), 29 states have call successors, (29), 19 states have call predecessors, (29), 23 states have return successors, (36), 31 states have call predecessors, (36), 28 states have call successors, (36) [2023-11-23 07:55:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 206 transitions. [2023-11-23 07:55:27,504 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 206 transitions. Word has length 86 [2023-11-23 07:55:27,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:55:27,505 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 206 transitions. [2023-11-23 07:55:27,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 25 states have internal predecessors, (75), 7 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-23 07:55:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 206 transitions. [2023-11-23 07:55:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 07:55:27,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:27,506 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2023-11-23 07:55:27,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 07:55:27,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:27,722 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:27,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash 677360883, now seen corresponding path program 3 times [2023-11-23 07:55:27,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:27,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635574921] [2023-11-23 07:55:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:27,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:27,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:55:27,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526099043] [2023-11-23 07:55:27,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:55:27,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:27,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:27,759 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:55:27,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 07:55:28,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 07:55:28,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:55:28,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:55:28,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:55:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 07:55:28,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:55:28,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:28,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635574921] [2023-11-23 07:55:28,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:55:28,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526099043] [2023-11-23 07:55:28,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526099043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:55:28,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:55:28,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:55:28,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87622965] [2023-11-23 07:55:28,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:55:28,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:55:28,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:28,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:55:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:55:28,192 INFO L87 Difference]: Start difference. First operand 168 states and 206 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 07:55:28,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:55:28,362 INFO L93 Difference]: Finished difference Result 233 states and 284 transitions. [2023-11-23 07:55:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:55:28,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2023-11-23 07:55:28,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:55:28,365 INFO L225 Difference]: With dead ends: 233 [2023-11-23 07:55:28,365 INFO L226 Difference]: Without dead ends: 172 [2023-11-23 07:55:28,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:55:28,368 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 4 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:55:28,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 424 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:55:28,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-23 07:55:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2023-11-23 07:55:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 115 states have (on average 1.208695652173913) internal successors, (139), 117 states have internal predecessors, (139), 29 states have call successors, (29), 19 states have call predecessors, (29), 23 states have return successors, (36), 31 states have call predecessors, (36), 28 states have call successors, (36) [2023-11-23 07:55:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 204 transitions. [2023-11-23 07:55:28,389 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 204 transitions. Word has length 88 [2023-11-23 07:55:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:55:28,389 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 204 transitions. [2023-11-23 07:55:28,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 07:55:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 204 transitions. [2023-11-23 07:55:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 07:55:28,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:28,390 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:55:28,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 07:55:28,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:28,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:28,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:28,623 INFO L85 PathProgramCache]: Analyzing trace with hash -896563766, now seen corresponding path program 1 times [2023-11-23 07:55:28,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:28,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136923679] [2023-11-23 07:55:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:28,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:28,660 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:55:28,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731100017] [2023-11-23 07:55:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:28,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:28,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:28,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:55:28,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 07:55:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:29,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 2211 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 07:55:29,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:55:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 07:55:29,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:55:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 07:55:29,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:29,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136923679] [2023-11-23 07:55:29,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:55:29,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731100017] [2023-11-23 07:55:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731100017] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:55:29,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:55:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 07:55:29,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181519178] [2023-11-23 07:55:29,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:55:29,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:55:29,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:29,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:55:29,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:55:29,139 INFO L87 Difference]: Start difference. First operand 168 states and 204 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 07:55:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:55:29,554 INFO L93 Difference]: Finished difference Result 274 states and 334 transitions. [2023-11-23 07:55:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:55:29,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 90 [2023-11-23 07:55:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:55:29,556 INFO L225 Difference]: With dead ends: 274 [2023-11-23 07:55:29,556 INFO L226 Difference]: Without dead ends: 197 [2023-11-23 07:55:29,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:55:29,557 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 16 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:55:29,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 622 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:55:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-23 07:55:29,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 180. [2023-11-23 07:55:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 127 states have (on average 1.236220472440945) internal successors, (157), 129 states have internal predecessors, (157), 29 states have call successors, (29), 19 states have call predecessors, (29), 23 states have return successors, (36), 31 states have call predecessors, (36), 28 states have call successors, (36) [2023-11-23 07:55:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 222 transitions. [2023-11-23 07:55:29,569 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 222 transitions. Word has length 90 [2023-11-23 07:55:29,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:55:29,570 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 222 transitions. [2023-11-23 07:55:29,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 07:55:29,570 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 222 transitions. [2023-11-23 07:55:29,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-23 07:55:29,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:29,571 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:55:29,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 07:55:29,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 07:55:29,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:29,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:29,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1062439964, now seen corresponding path program 1 times [2023-11-23 07:55:29,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:29,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80020607] [2023-11-23 07:55:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:29,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:29,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:55:29,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009318605] [2023-11-23 07:55:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:29,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:29,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:29,829 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:55:29,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 07:55:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:55:30,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 2241 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:55:30,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:55:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 07:55:30,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:55:30,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:30,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80020607] [2023-11-23 07:55:30,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:55:30,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009318605] [2023-11-23 07:55:30,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009318605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:55:30,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:55:30,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:55:30,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543108298] [2023-11-23 07:55:30,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:55:30,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:55:30,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:30,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:55:30,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:55:30,201 INFO L87 Difference]: Start difference. First operand 180 states and 222 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 07:55:30,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:55:30,415 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2023-11-23 07:55:30,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:55:30,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 94 [2023-11-23 07:55:30,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:55:30,417 INFO L225 Difference]: With dead ends: 243 [2023-11-23 07:55:30,418 INFO L226 Difference]: Without dead ends: 176 [2023-11-23 07:55:30,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:55:30,418 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 45 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:55:30,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 412 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:55:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-23 07:55:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2023-11-23 07:55:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 121 states have (on average 1.2314049586776858) internal successors, (149), 122 states have internal predecessors, (149), 28 states have call successors, (28), 18 states have call predecessors, (28), 21 states have return successors, (32), 30 states have call predecessors, (32), 27 states have call successors, (32) [2023-11-23 07:55:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 209 transitions. [2023-11-23 07:55:30,430 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 209 transitions. Word has length 94 [2023-11-23 07:55:30,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:55:30,431 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 209 transitions. [2023-11-23 07:55:30,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 07:55:30,431 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 209 transitions. [2023-11-23 07:55:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 07:55:30,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:55:30,432 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:55:30,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 07:55:30,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:30,657 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:55:30,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:55:30,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1055692086, now seen corresponding path program 2 times [2023-11-23 07:55:30,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:55:30,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301580439] [2023-11-23 07:55:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:55:30,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:55:30,694 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:55:30,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182367310] [2023-11-23 07:55:30,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:55:30,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:55:30,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:55:30,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:55:30,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 07:55:31,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:55:31,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:55:31,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 2232 conjuncts, 118 conjunts are in the unsatisfiable core [2023-11-23 07:55:31,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:55:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 39 proven. 34 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 07:55:31,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:55:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 07:55:32,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:55:32,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301580439] [2023-11-23 07:55:32,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:55:32,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182367310] [2023-11-23 07:55:32,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182367310] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:55:32,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:55:32,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 37 [2023-11-23 07:55:32,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054123150] [2023-11-23 07:55:32,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:55:32,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-23 07:55:32,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:55:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-23 07:55:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1214, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 07:55:32,798 INFO L87 Difference]: Start difference. First operand 171 states and 209 transitions. Second operand has 37 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 33 states have internal predecessors, (104), 8 states have call successors, (24), 5 states have call predecessors, (24), 9 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-23 07:55:39,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:55:41,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:55:43,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:55:45,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:55:47,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:55:49,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:55:51,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:55:53,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:55:55,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:55:57,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:55:59,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:56:02,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:56:04,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:56:06,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:56:08,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:56:10,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:56:12,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:56:14,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:56:16,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:56:18,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:56:20,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:56:22,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 07:56:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:56:22,660 INFO L93 Difference]: Finished difference Result 299 states and 365 transitions. [2023-11-23 07:56:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-23 07:56:22,661 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 33 states have internal predecessors, (104), 8 states have call successors, (24), 5 states have call predecessors, (24), 9 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 96 [2023-11-23 07:56:22,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:56:22,662 INFO L225 Difference]: With dead ends: 299 [2023-11-23 07:56:22,662 INFO L226 Difference]: Without dead ends: 280 [2023-11-23 07:56:22,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=405, Invalid=4015, Unknown=2, NotChecked=0, Total=4422 [2023-11-23 07:56:22,664 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 215 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 113 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:56:22,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1762 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 3226 Invalid, 28 Unknown, 0 Unchecked, 48.4s Time] [2023-11-23 07:56:22,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-23 07:56:22,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 258. [2023-11-23 07:56:22,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 183 states have (on average 1.2404371584699454) internal successors, (227), 188 states have internal predecessors, (227), 41 states have call successors, (41), 27 states have call predecessors, (41), 33 states have return successors, (50), 42 states have call predecessors, (50), 40 states have call successors, (50) [2023-11-23 07:56:22,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 318 transitions. [2023-11-23 07:56:22,689 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 318 transitions. Word has length 96 [2023-11-23 07:56:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:56:22,690 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 318 transitions. [2023-11-23 07:56:22,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 33 states have internal predecessors, (104), 8 states have call successors, (24), 5 states have call predecessors, (24), 9 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-23 07:56:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 318 transitions. [2023-11-23 07:56:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 07:56:22,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:56:22,691 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:56:22,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 07:56:22,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 07:56:22,908 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:56:22,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:56:22,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1070631816, now seen corresponding path program 3 times [2023-11-23 07:56:22,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:56:22,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665753640] [2023-11-23 07:56:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:56:22,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:56:22,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:56:22,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299235439] [2023-11-23 07:56:22,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:56:22,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:56:22,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:56:22,953 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:56:22,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 07:56:24,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-23 07:56:24,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:56:24,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 2244 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-23 07:56:24,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:56:24,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:56:24,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 07:56:24,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:56:24,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 07:56:24,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:56:24,599 INFO L378 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 07:56:24,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:56:24,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-11-23 07:56:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 39 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 07:56:25,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:56:25,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 111 [2023-11-23 07:56:26,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2023-11-23 07:56:26,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2023-11-23 07:56:26,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2023-11-23 07:56:26,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2023-11-23 07:56:26,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-11-23 07:56:26,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 66 [2023-11-23 07:56:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 48 proven. 17 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 07:56:26,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:56:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665753640] [2023-11-23 07:56:26,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:56:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299235439] [2023-11-23 07:56:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299235439] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:56:26,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:56:26,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2023-11-23 07:56:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220802644] [2023-11-23 07:56:26,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:56:26,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-23 07:56:26,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:56:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-23 07:56:26,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 07:56:26,650 INFO L87 Difference]: Start difference. First operand 258 states and 318 transitions. Second operand has 34 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 31 states have internal predecessors, (87), 7 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-23 07:56:30,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:56:30,369 INFO L93 Difference]: Finished difference Result 289 states and 353 transitions. [2023-11-23 07:56:30,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 07:56:30,369 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 31 states have internal predecessors, (87), 7 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) Word has length 99 [2023-11-23 07:56:30,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:56:30,370 INFO L225 Difference]: With dead ends: 289 [2023-11-23 07:56:30,370 INFO L226 Difference]: Without dead ends: 280 [2023-11-23 07:56:30,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=161, Invalid=1399, Unknown=0, NotChecked=0, Total=1560 [2023-11-23 07:56:30,371 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 32 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:56:30,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2200 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-23 07:56:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-23 07:56:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 264. [2023-11-23 07:56:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 194 states have internal predecessors, (234), 41 states have call successors, (41), 27 states have call predecessors, (41), 33 states have return successors, (50), 42 states have call predecessors, (50), 40 states have call successors, (50) [2023-11-23 07:56:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 325 transitions. [2023-11-23 07:56:30,397 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 325 transitions. Word has length 99 [2023-11-23 07:56:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:56:30,398 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 325 transitions. [2023-11-23 07:56:30,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 31 states have internal predecessors, (87), 7 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-23 07:56:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 325 transitions. [2023-11-23 07:56:30,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 07:56:30,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:56:30,399 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:56:30,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 07:56:30,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 07:56:30,605 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:56:30,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:56:30,606 INFO L85 PathProgramCache]: Analyzing trace with hash 175113464, now seen corresponding path program 4 times [2023-11-23 07:56:30,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:56:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760332421] [2023-11-23 07:56:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:56:30,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:56:30,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:56:30,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85942036] [2023-11-23 07:56:30,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 07:56:30,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:56:30,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:56:30,647 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:56:30,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 07:56:31,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 07:56:31,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:56:31,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 2265 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 07:56:31,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:56:31,093 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 60 proven. 16 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 07:56:31,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:56:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 07:56:31,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:56:31,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760332421] [2023-11-23 07:56:31,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:56:31,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85942036] [2023-11-23 07:56:31,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85942036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:56:31,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:56:31,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-23 07:56:31,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849965100] [2023-11-23 07:56:31,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:56:31,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:56:31,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:56:31,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:56:31,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:56:31,246 INFO L87 Difference]: Start difference. First operand 264 states and 325 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 07:56:32,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:56:32,019 INFO L93 Difference]: Finished difference Result 469 states and 582 transitions. [2023-11-23 07:56:32,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 07:56:32,019 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 101 [2023-11-23 07:56:32,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:56:32,021 INFO L225 Difference]: With dead ends: 469 [2023-11-23 07:56:32,021 INFO L226 Difference]: Without dead ends: 364 [2023-11-23 07:56:32,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:56:32,022 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 77 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:56:32,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 872 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 07:56:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-23 07:56:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 288. [2023-11-23 07:56:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 213 states have (on average 1.267605633802817) internal successors, (270), 218 states have internal predecessors, (270), 41 states have call successors, (41), 27 states have call predecessors, (41), 33 states have return successors, (50), 42 states have call predecessors, (50), 40 states have call successors, (50) [2023-11-23 07:56:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 361 transitions. [2023-11-23 07:56:32,047 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 361 transitions. Word has length 101 [2023-11-23 07:56:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:56:32,048 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 361 transitions. [2023-11-23 07:56:32,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 07:56:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 361 transitions. [2023-11-23 07:56:32,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 07:56:32,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:56:32,049 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:56:32,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-23 07:56:32,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 07:56:32,260 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:56:32,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:56:32,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1720915454, now seen corresponding path program 1 times [2023-11-23 07:56:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:56:32,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347965282] [2023-11-23 07:56:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:56:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:56:32,309 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:56:32,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892484962] [2023-11-23 07:56:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:56:32,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:56:32,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:56:32,311 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:56:32,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 07:56:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:56:32,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 2412 conjuncts, 118 conjunts are in the unsatisfiable core [2023-11-23 07:56:32,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:56:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 07:56:33,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:56:33,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:56:33,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347965282] [2023-11-23 07:56:33,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:56:33,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892484962] [2023-11-23 07:56:33,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892484962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:56:33,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:56:33,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-23 07:56:33,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171378492] [2023-11-23 07:56:33,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:56:33,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 07:56:33,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:56:33,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 07:56:33,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2023-11-23 07:56:33,297 INFO L87 Difference]: Start difference. First operand 288 states and 361 transitions. Second operand has 22 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-23 07:56:37,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:56:40,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:56:42,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:56:44,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:56:44,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:56:44,824 INFO L93 Difference]: Finished difference Result 376 states and 462 transitions. [2023-11-23 07:56:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 07:56:44,825 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 116 [2023-11-23 07:56:44,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:56:44,826 INFO L225 Difference]: With dead ends: 376 [2023-11-23 07:56:44,826 INFO L226 Difference]: Without dead ends: 299 [2023-11-23 07:56:44,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 07:56:44,827 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 85 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 36 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:56:44,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 698 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1248 Invalid, 12 Unknown, 0 Unchecked, 11.3s Time] [2023-11-23 07:56:44,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-23 07:56:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 228. [2023-11-23 07:56:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 167 states have (on average 1.2395209580838322) internal successors, (207), 171 states have internal predecessors, (207), 32 states have call successors, (32), 23 states have call predecessors, (32), 28 states have return successors, (40), 33 states have call predecessors, (40), 31 states have call successors, (40) [2023-11-23 07:56:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 279 transitions. [2023-11-23 07:56:44,853 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 279 transitions. Word has length 116 [2023-11-23 07:56:44,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:56:44,854 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 279 transitions. [2023-11-23 07:56:44,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-23 07:56:44,855 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 279 transitions. [2023-11-23 07:56:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 07:56:44,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:56:44,857 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:56:44,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 07:56:45,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 07:56:45,062 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:56:45,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:56:45,063 INFO L85 PathProgramCache]: Analyzing trace with hash -591203197, now seen corresponding path program 1 times [2023-11-23 07:56:45,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:56:45,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595232534] [2023-11-23 07:56:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:56:45,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:56:45,108 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:56:45,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623388689] [2023-11-23 07:56:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:56:45,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:56:45,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:56:45,123 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:56:45,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 07:56:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:56:45,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 134 conjunts are in the unsatisfiable core [2023-11-23 07:56:45,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:56:45,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-23 07:56:45,992 INFO L349 Elim1Store]: treesize reduction 138, result has 35.2 percent of original size [2023-11-23 07:56:45,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 73 treesize of output 156 [2023-11-23 07:56:46,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 9 [2023-11-23 07:56:47,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:56:47,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-11-23 07:56:47,066 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-23 07:56:47,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-11-23 07:57:07,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 51 [2023-11-23 07:57:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 07:57:40,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:57:45,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:57:45,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595232534] [2023-11-23 07:57:45,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:57:45,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623388689] [2023-11-23 07:57:45,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623388689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:57:45,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:57:45,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2023-11-23 07:57:45,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028247188] [2023-11-23 07:57:45,685 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:57:45,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 07:57:45,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:57:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 07:57:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2067, Unknown=28, NotChecked=0, Total=2256 [2023-11-23 07:57:45,687 INFO L87 Difference]: Start difference. First operand 228 states and 279 transitions. Second operand has 38 states, 35 states have (on average 2.142857142857143) internal successors, (75), 36 states have internal predecessors, (75), 10 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2023-11-23 07:57:50,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:57:53,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:57:55,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:57:57,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:03,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:07,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:09,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:11,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:14,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:16,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:18,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:20,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:23,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:25,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:27,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:29,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:37,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:39,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:42,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:44,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:47,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 07:58:49,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 07:58:55,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:57,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:58:59,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:01,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:08,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:10,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:12,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:14,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:16,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:18,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:20,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:22,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:24,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:26,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:28,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:30,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:32,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:34,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:36,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:38,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:40,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:42,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:44,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:59:46,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Killed by 15