./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_advance_harness.i --full-output --preprocessor.use.memory.slicer true --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_byte_buf_advance_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 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:45:26,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:45:26,375 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:45:26,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:45:26,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:45:26,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:45:26,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:45:26,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:45:26,411 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:45:26,414 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:45:26,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:45:26,415 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:45:26,415 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:45:26,416 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:45:26,416 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:45:26,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:45:26,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:45:26,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:45:26,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:45:26,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:45:26,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:45:26,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:45:26,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:45:26,418 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:45:26,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:45:26,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:45:26,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:45:26,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:45:26,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:45:26,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:45:26,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:45:26,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:45:26,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:45:26,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:45:26,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:45:26,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:45:26,421 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:45:26,422 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:45:26,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:45:26,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:45:26,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:45:26,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:45:26,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:45:26,657 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:45:26,657 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:45:26,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_advance_harness.i [2023-11-23 06:45:27,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:45:27,881 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:45:27,881 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_advance_harness.i [2023-11-23 06:45:27,911 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/589195770/fd1a83f9866d47a3bfda024c5f184e33/FLAG6e127eba3 [2023-11-23 06:45:27,923 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/589195770/fd1a83f9866d47a3bfda024c5f184e33 [2023-11-23 06:45:27,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:45:27,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:45:27,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:45:27,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:45:27,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:45:27,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:45:27" (1/1) ... [2023-11-23 06:45:27,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff2ba35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:27, skipping insertion in model container [2023-11-23 06:45:27,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:45:27" (1/1) ... [2023-11-23 06:45:28,031 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:45:28,238 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_byte_buf_advance_harness.i[4494,4507] [2023-11-23 06:45:28,244 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_byte_buf_advance_harness.i[4554,4567] [2023-11-23 06:45:28,837 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:28,838 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:28,839 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:28,839 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:28,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:28,846 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:28,847 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:28,848 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:28,848 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,109 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:45:29,110 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:45:29,111 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:45:29,112 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:45:29,113 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:45:29,113 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:45:29,113 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:45:29,115 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:45:29,116 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:45:29,116 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:45:29,302 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,303 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:45:29,441 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:45:29,470 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_byte_buf_advance_harness.i[4494,4507] [2023-11-23 06:45:29,500 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_byte_buf_advance_harness.i[4554,4567] [2023-11-23 06:45:29,520 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,521 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,521 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,521 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,522 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,527 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,527 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,528 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,528 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,555 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:45:29,556 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:45:29,556 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:45:29,557 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:45:29,557 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:45:29,558 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:45:29,558 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:45:29,558 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:45:29,559 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:45:29,563 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:45:29,608 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-23 06:45:29,610 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,610 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:45:29,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-23 06:45:29,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:45:29,824 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,824 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,824 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,824 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,825 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,825 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,825 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,825 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,825 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,826 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,826 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,826 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,826 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,826 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,827 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,827 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,827 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,827 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:45:29,833 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:45:29,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29 WrapperNode [2023-11-23 06:45:29,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:45:29,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:45:29,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:45:29,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:45:29,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:29,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:29,976 INFO L138 Inliner]: procedures = 690, calls = 2680, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 972 [2023-11-23 06:45:29,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:45:29,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:45:29,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:45:29,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:45:29,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:29,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:29,992 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:30,041 INFO L188 MemorySlicer]: Split 591 memory accesses to 6 slices as follows [2, 6, 81, 256, 243, 3]. 43 percent of accesses are in the largest equivalence class. The 514 initializations are split as follows [2, 0, 12, 256, 241, 3]. The 19 writes are split as follows [0, 2, 17, 0, 0, 0]. [2023-11-23 06:45:30,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:30,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:30,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:30,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:30,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:30,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:30,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:45:30,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:45:30,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:45:30,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:45:30,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (1/1) ... [2023-11-23 06:45:30,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:45:30,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:45:30,150 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 06:45:30,166 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 06:45:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 06:45:30,188 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 06:45:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:45:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:45:30,189 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:45:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:45:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:45:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:45:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:45:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:45:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:45:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:45:30,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:45:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:45:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:45:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:45:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:45:30,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:45:30,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:45:30,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:45:30,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:45:30,191 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 06:45:30,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 06:45:30,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:45:30,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:45:30,192 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:45:30,192 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:45:30,192 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 06:45:30,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 06:45:30,193 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:45:30,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:45:30,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:45:30,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:45:30,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:45:30,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:45:30,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:45:30,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:45:30,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:45:30,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:45:30,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:45:30,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:45:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:45:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:45:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:45:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:45:30,195 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:45:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-23 06:45:30,195 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-23 06:45:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:45:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:45:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:45:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:45:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:45:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:45:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 06:45:30,196 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 06:45:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 06:45:30,197 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 06:45:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:45:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:45:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:45:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:45:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:45:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:45:30,440 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:45:30,442 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:45:31,143 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:45:31,270 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:45:31,270 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 06:45:31,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:45:31 BoogieIcfgContainer [2023-11-23 06:45:31,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:45:31,274 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:45:31,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:45:31,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:45:31,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:45:27" (1/3) ... [2023-11-23 06:45:31,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b5396d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:45:31, skipping insertion in model container [2023-11-23 06:45:31,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:45:29" (2/3) ... [2023-11-23 06:45:31,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b5396d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:45:31, skipping insertion in model container [2023-11-23 06:45:31,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:45:31" (3/3) ... [2023-11-23 06:45:31,280 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2023-11-23 06:45:31,293 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:45:31,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:45:31,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:45:31,347 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;@5565d776, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:45:31,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:45:31,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 90 states have internal predecessors, (113), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-23 06:45:31,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 06:45:31,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:31,366 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:45:31,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:31,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:31,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1493556577, now seen corresponding path program 1 times [2023-11-23 06:45:31,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:31,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556914811] [2023-11-23 06:45:31,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:31,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:31,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:45:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:45:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:31,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:45:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:45:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:45:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:32,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:45:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:45:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:45:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:45:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:45:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:32,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:45:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 06:45:32,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:32,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556914811] [2023-11-23 06:45:32,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556914811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:45:32,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:45:32,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 06:45:32,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97298367] [2023-11-23 06:45:32,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:45:32,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:45:32,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:45:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:45:32,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:45:32,098 INFO L87 Difference]: Start difference. First operand has 157 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 90 states have internal predecessors, (113), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:45:32,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:45:32,982 INFO L93 Difference]: Finished difference Result 317 states and 488 transitions. [2023-11-23 06:45:32,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 06:45:32,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2023-11-23 06:45:32,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:45:32,991 INFO L225 Difference]: With dead ends: 317 [2023-11-23 06:45:32,991 INFO L226 Difference]: Without dead ends: 161 [2023-11-23 06:45:32,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:45:32,997 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 59 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:45:32,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 230 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:45:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-23 06:45:33,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2023-11-23 06:45:33,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 89 states have internal predecessors, (107), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-23 06:45:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 216 transitions. [2023-11-23 06:45:33,054 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 216 transitions. Word has length 79 [2023-11-23 06:45:33,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:45:33,055 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 216 transitions. [2023-11-23 06:45:33,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:45:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 216 transitions. [2023-11-23 06:45:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-23 06:45:33,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:33,058 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:45:33,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:45:33,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:33,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1591189385, now seen corresponding path program 1 times [2023-11-23 06:45:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864043287] [2023-11-23 06:45:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:45:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:45:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:45:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:45:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:45:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:45:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:45:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:45:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:45:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:45:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:45:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:45:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 06:45:33,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:33,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864043287] [2023-11-23 06:45:33,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864043287] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:45:33,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56607726] [2023-11-23 06:45:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:33,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:33,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:45:33,714 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 06:45:33,756 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 06:45:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:34,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:45:34,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:45:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:45:34,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:45:34,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56607726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:45:34,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:45:34,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 06:45:34,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922203669] [2023-11-23 06:45:34,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:45:34,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:45:34,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:45:34,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:45:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:45:34,295 INFO L87 Difference]: Start difference. First operand 155 states and 216 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:45:34,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:45:34,685 INFO L93 Difference]: Finished difference Result 306 states and 434 transitions. [2023-11-23 06:45:34,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:45:34,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 84 [2023-11-23 06:45:34,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:45:34,688 INFO L225 Difference]: With dead ends: 306 [2023-11-23 06:45:34,688 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 06:45:34,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:45:34,690 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 68 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:45:34,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 463 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:45:34,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 06:45:34,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-23 06:45:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.2134831460674158) internal successors, (108), 91 states have internal predecessors, (108), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (63), 54 states have call predecessors, (63), 54 states have call successors, (63) [2023-11-23 06:45:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 226 transitions. [2023-11-23 06:45:34,714 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 226 transitions. Word has length 84 [2023-11-23 06:45:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:45:34,714 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 226 transitions. [2023-11-23 06:45:34,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:45:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 226 transitions. [2023-11-23 06:45:34,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 06:45:34,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:34,721 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:45:34,739 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 06:45:34,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:34,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:34,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:34,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2116777854, now seen corresponding path program 1 times [2023-11-23 06:45:34,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:34,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797614924] [2023-11-23 06:45:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:34,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:45:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:45:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:45:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:45:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:45:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:45:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:45:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:45:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:45:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:45:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:45:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 06:45:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 06:45:35,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:35,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797614924] [2023-11-23 06:45:35,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797614924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:45:35,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004928965] [2023-11-23 06:45:35,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:35,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:35,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:45:35,584 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 06:45:35,614 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 06:45:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:36,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:45:36,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:45:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 06:45:36,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:45:36,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004928965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:45:36,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:45:36,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 06:45:36,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471050386] [2023-11-23 06:45:36,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:45:36,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:45:36,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:45:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:45:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:45:36,096 INFO L87 Difference]: Start difference. First operand 157 states and 226 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:45:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:45:36,627 INFO L93 Difference]: Finished difference Result 272 states and 393 transitions. [2023-11-23 06:45:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:45:36,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 90 [2023-11-23 06:45:36,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:45:36,634 INFO L225 Difference]: With dead ends: 272 [2023-11-23 06:45:36,635 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 06:45:36,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-23 06:45:36,640 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 76 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:45:36,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 786 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:45:36,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 06:45:36,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-23 06:45:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.2134831460674158) internal successors, (108), 91 states have internal predecessors, (108), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (60), 54 states have call predecessors, (60), 54 states have call successors, (60) [2023-11-23 06:45:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 223 transitions. [2023-11-23 06:45:36,655 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 223 transitions. Word has length 90 [2023-11-23 06:45:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:45:36,655 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 223 transitions. [2023-11-23 06:45:36,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:45:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 223 transitions. [2023-11-23 06:45:36,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 06:45:36,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:36,657 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:45:36,674 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 06:45:36,868 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,SelfDestructingSolverStorable2 [2023-11-23 06:45:36,869 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:36,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:36,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1412501939, now seen corresponding path program 2 times [2023-11-23 06:45:36,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:36,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771978159] [2023-11-23 06:45:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:36,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:45:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:45:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:45:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:45:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:45:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:45:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:45:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:45:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:45:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:45:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 06:45:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:45:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 06:45:37,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:37,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771978159] [2023-11-23 06:45:37,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771978159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:45:37,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75997829] [2023-11-23 06:45:37,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:45:37,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:37,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:45:37,690 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 06:45:37,720 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 06:45:38,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 06:45:38,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:45:38,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:45:38,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:45:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-23 06:45:38,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:45:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 06:45:38,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75997829] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 06:45:38,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:45:38,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 14 [2023-11-23 06:45:38,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669089199] [2023-11-23 06:45:38,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:45:38,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:45:38,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:45:38,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:45:38,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:45:38,544 INFO L87 Difference]: Start difference. First operand 157 states and 223 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:45:39,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:45:39,141 INFO L93 Difference]: Finished difference Result 239 states and 340 transitions. [2023-11-23 06:45:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:45:39,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 96 [2023-11-23 06:45:39,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:45:39,143 INFO L225 Difference]: With dead ends: 239 [2023-11-23 06:45:39,143 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 06:45:39,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:45:39,144 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 212 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:45:39,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 729 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:45:39,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 06:45:39,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-23 06:45:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.2134831460674158) internal successors, (108), 91 states have internal predecessors, (108), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2023-11-23 06:45:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 222 transitions. [2023-11-23 06:45:39,155 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 222 transitions. Word has length 96 [2023-11-23 06:45:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:45:39,156 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 222 transitions. [2023-11-23 06:45:39,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:45:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 222 transitions. [2023-11-23 06:45:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 06:45:39,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:39,157 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:45:39,176 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 06:45:39,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:39,358 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:39,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1527350494, now seen corresponding path program 3 times [2023-11-23 06:45:39,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:39,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694491472] [2023-11-23 06:45:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:39,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:45:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:45:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:45:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:45:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:45:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:45:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:45:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:45:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:45:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:45:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 06:45:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:45:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 06:45:39,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:39,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694491472] [2023-11-23 06:45:39,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694491472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:45:39,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217060452] [2023-11-23 06:45:39,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 06:45:39,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:39,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:45:39,888 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 06:45:39,892 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 06:45:40,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 06:45:40,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:45:40,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 2390 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 06:45:40,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:45:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-23 06:45:40,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:45:40,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217060452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:45:40,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:45:40,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-23 06:45:40,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706407268] [2023-11-23 06:45:40,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:45:40,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:45:40,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:45:40,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:45:40,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:45:40,365 INFO L87 Difference]: Start difference. First operand 157 states and 222 transitions. Second operand has 8 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:45:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:45:41,012 INFO L93 Difference]: Finished difference Result 168 states and 243 transitions. [2023-11-23 06:45:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:45:41,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2023-11-23 06:45:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:45:41,014 INFO L225 Difference]: With dead ends: 168 [2023-11-23 06:45:41,014 INFO L226 Difference]: Without dead ends: 166 [2023-11-23 06:45:41,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:45:41,015 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 23 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:45:41,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1389 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:45:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-23 06:45:41,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2023-11-23 06:45:41,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 94 states have (on average 1.202127659574468) internal successors, (113), 97 states have internal predecessors, (113), 56 states have call successors, (56), 12 states have call predecessors, (56), 14 states have return successors, (71), 55 states have call predecessors, (71), 55 states have call successors, (71) [2023-11-23 06:45:41,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 240 transitions. [2023-11-23 06:45:41,027 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 240 transitions. Word has length 102 [2023-11-23 06:45:41,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:45:41,027 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 240 transitions. [2023-11-23 06:45:41,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:45:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 240 transitions. [2023-11-23 06:45:41,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-23 06:45:41,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:41,028 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 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] [2023-11-23 06:45:41,043 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 06:45:41,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:41,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:41,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:41,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1106254246, now seen corresponding path program 1 times [2023-11-23 06:45:41,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:41,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559389433] [2023-11-23 06:45:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:41,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:45:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:45:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:45:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:45:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:45:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:45:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:45:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:45:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:45:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:45:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 06:45:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:45:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 06:45:41,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:41,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559389433] [2023-11-23 06:45:41,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559389433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:45:41,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119315932] [2023-11-23 06:45:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:41,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:41,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:45:41,729 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 06:45:41,755 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 06:45:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:42,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 2829 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:45:42,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:45:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 06:45:42,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:45:42,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119315932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:45:42,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:45:42,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 06:45:42,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10401737] [2023-11-23 06:45:42,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:45:42,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:45:42,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:45:42,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:45:42,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:45:42,273 INFO L87 Difference]: Start difference. First operand 165 states and 240 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:45:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:45:42,678 INFO L93 Difference]: Finished difference Result 296 states and 432 transitions. [2023-11-23 06:45:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:45:42,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 106 [2023-11-23 06:45:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:45:42,681 INFO L225 Difference]: With dead ends: 296 [2023-11-23 06:45:42,681 INFO L226 Difference]: Without dead ends: 163 [2023-11-23 06:45:42,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-23 06:45:42,683 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 75 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:45:42,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 808 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:45:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-23 06:45:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-23 06:45:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 93 states have (on average 1.1935483870967742) internal successors, (111), 95 states have internal predecessors, (111), 56 states have call successors, (56), 12 states have call predecessors, (56), 13 states have return successors, (66), 55 states have call predecessors, (66), 55 states have call successors, (66) [2023-11-23 06:45:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 233 transitions. [2023-11-23 06:45:42,701 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 233 transitions. Word has length 106 [2023-11-23 06:45:42,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:45:42,701 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 233 transitions. [2023-11-23 06:45:42,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:45:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 233 transitions. [2023-11-23 06:45:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 06:45:42,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:42,704 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:45:42,727 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 06:45:42,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:42,918 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:42,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:42,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1699552879, now seen corresponding path program 1 times [2023-11-23 06:45:42,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:42,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566204764] [2023-11-23 06:45:42,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:42,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:45:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:45:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:45:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:45:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:45:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:45:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:45:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:45:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:45:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:45:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:45:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 06:45:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-23 06:45:43,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:43,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566204764] [2023-11-23 06:45:43,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566204764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:45:43,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:45:43,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:45:43,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711768817] [2023-11-23 06:45:43,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:45:43,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:45:43,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:45:43,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:45:43,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:45:43,689 INFO L87 Difference]: Start difference. First operand 163 states and 233 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:45:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:45:45,154 INFO L93 Difference]: Finished difference Result 349 states and 523 transitions. [2023-11-23 06:45:45,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:45:45,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-11-23 06:45:45,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:45:45,156 INFO L225 Difference]: With dead ends: 349 [2023-11-23 06:45:45,156 INFO L226 Difference]: Without dead ends: 192 [2023-11-23 06:45:45,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:45:45,158 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 134 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:45:45,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 426 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:45:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-23 06:45:45,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 168. [2023-11-23 06:45:45,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 98 states have (on average 1.2040816326530612) internal successors, (118), 100 states have internal predecessors, (118), 56 states have call successors, (56), 12 states have call predecessors, (56), 13 states have return successors, (66), 55 states have call predecessors, (66), 55 states have call successors, (66) [2023-11-23 06:45:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 240 transitions. [2023-11-23 06:45:45,169 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 240 transitions. Word has length 112 [2023-11-23 06:45:45,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:45:45,170 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 240 transitions. [2023-11-23 06:45:45,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:45:45,170 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 240 transitions. [2023-11-23 06:45:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 06:45:45,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:45,171 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:45:45,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 06:45:45,171 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:45,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1894349839, now seen corresponding path program 1 times [2023-11-23 06:45:45,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:45,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787265299] [2023-11-23 06:45:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:45:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:45:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:45:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:45:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:45:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:45:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:45:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:45:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:45:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:45:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:45:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:47,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 06:45:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 06:45:48,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:48,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787265299] [2023-11-23 06:45:48,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787265299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:45:48,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:45:48,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 06:45:48,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744662795] [2023-11-23 06:45:48,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:45:48,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:45:48,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:45:48,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:45:48,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:45:48,121 INFO L87 Difference]: Start difference. First operand 168 states and 240 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:45:50,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:45:50,166 INFO L93 Difference]: Finished difference Result 279 states and 415 transitions. [2023-11-23 06:45:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 06:45:50,167 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 112 [2023-11-23 06:45:50,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:45:50,168 INFO L225 Difference]: With dead ends: 279 [2023-11-23 06:45:50,168 INFO L226 Difference]: Without dead ends: 191 [2023-11-23 06:45:50,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2023-11-23 06:45:50,169 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 208 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:45:50,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 515 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:45:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-23 06:45:50,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 182. [2023-11-23 06:45:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 111 states have (on average 1.2252252252252251) internal successors, (136), 114 states have internal predecessors, (136), 56 states have call successors, (56), 12 states have call predecessors, (56), 14 states have return successors, (76), 55 states have call predecessors, (76), 55 states have call successors, (76) [2023-11-23 06:45:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 268 transitions. [2023-11-23 06:45:50,180 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 268 transitions. Word has length 112 [2023-11-23 06:45:50,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:45:50,181 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 268 transitions. [2023-11-23 06:45:50,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:45:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 268 transitions. [2023-11-23 06:45:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 06:45:50,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:50,182 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:45:50,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 06:45:50,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:50,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:50,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1389500207, now seen corresponding path program 1 times [2023-11-23 06:45:50,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:50,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611084698] [2023-11-23 06:45:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:52,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:45:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:52,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:45:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:52,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:45:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:52,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:45:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:52,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:45:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:52,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:45:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:45:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:52,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:45:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:53,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:45:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:53,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:45:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:53,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:45:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:53,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:45:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:53,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 06:45:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 06:45:53,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:53,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611084698] [2023-11-23 06:45:53,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611084698] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:45:53,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945952525] [2023-11-23 06:45:53,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:53,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:53,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:45:53,067 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 06:45:53,094 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 06:45:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:53,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 2836 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-23 06:45:53,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:45:53,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:46:12,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:46:12,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 52 treesize of output 34 [2023-11-23 06:46:12,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2023-11-23 06:46:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 06:46:30,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:46:30,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945952525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:46:30,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:46:30,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [18] total 29 [2023-11-23 06:46:30,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895302825] [2023-11-23 06:46:30,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:46:30,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 06:46:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:46:30,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 06:46:30,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=726, Unknown=3, NotChecked=0, Total=812 [2023-11-23 06:46:30,942 INFO L87 Difference]: Start difference. First operand 182 states and 268 transitions. Second operand has 14 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 06:46:33,329 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 06:46:36,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:38,479 WARN L539 Checker$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 06:46:40,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:43,137 WARN L539 Checker$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 06:46:45,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:47,220 WARN L539 Checker$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 06:46:49,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:51,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:53,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:55,857 WARN L539 Checker$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 06:46:57,911 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 06:46:57,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:46:57,952 INFO L93 Difference]: Finished difference Result 482 states and 693 transitions. [2023-11-23 06:46:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 06:46:57,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 112 [2023-11-23 06:46:57,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:46:57,954 INFO L225 Difference]: With dead ends: 482 [2023-11-23 06:46:57,955 INFO L226 Difference]: Without dead ends: 306 [2023-11-23 06:46:57,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 119 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 37.3s TimeCoverageRelationStatistics Valid=128, Invalid=1059, Unknown=3, NotChecked=0, Total=1190 [2023-11-23 06:46:57,956 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 190 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 27 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:46:57,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1195 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1146 Invalid, 12 Unknown, 0 Unchecked, 26.9s Time] [2023-11-23 06:46:57,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-23 06:46:57,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 284. [2023-11-23 06:46:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 178 states have (on average 1.2247191011235956) internal successors, (218), 183 states have internal predecessors, (218), 82 states have call successors, (82), 19 states have call predecessors, (82), 23 states have return successors, (100), 81 states have call predecessors, (100), 80 states have call successors, (100) [2023-11-23 06:46:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 400 transitions. [2023-11-23 06:46:57,977 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 400 transitions. Word has length 112 [2023-11-23 06:46:57,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:46:57,977 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 400 transitions. [2023-11-23 06:46:57,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 06:46:57,977 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 400 transitions. [2023-11-23 06:46:57,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 06:46:57,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:46:57,978 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:46:57,996 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 06:46:58,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:46:58,200 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:46:58,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:46:58,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1772007697, now seen corresponding path program 2 times [2023-11-23 06:46:58,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:46:58,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077815545] [2023-11-23 06:46:58,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:58,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:46:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:46:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:46:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:46:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:46:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:46:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:46:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:46:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 06:46:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 06:46:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:46:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:46:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:46:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 06:46:59,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:46:59,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077815545] [2023-11-23 06:46:59,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077815545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:46:59,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689724287] [2023-11-23 06:46:59,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:46:59,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:46:59,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:46:59,974 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 06:47:00,010 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 06:47:00,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 06:47:00,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:47:00,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 06:47:00,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:00,616 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 39 treesize of output 13 [2023-11-23 06:47:02,631 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_from_array_~#buf~1#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_aws_byte_buf_from_array_~#buf~1#1.base_BEFORE_CALL_3| Int)) (let ((.cse0 (select |c_#memory_int#2| |v_ULTIMATE.start_aws_byte_buf_from_array_~#buf~1#1.base_BEFORE_CALL_3|))) (= (select .cse0 |v_ULTIMATE.start_aws_byte_buf_from_array_~#buf~1#1.offset_BEFORE_CALL_1|) (select .cse0 (+ 16 |v_ULTIMATE.start_aws_byte_buf_from_array_~#buf~1#1.offset_BEFORE_CALL_1|))))) is different from true [2023-11-23 06:47:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-23 06:47:02,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:47:02,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689724287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:02,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:47:02,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-23 06:47:02,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863936164] [2023-11-23 06:47:02,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:02,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:47:02,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:02,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:47:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=270, Unknown=1, NotChecked=32, Total=342 [2023-11-23 06:47:02,942 INFO L87 Difference]: Start difference. First operand 284 states and 400 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:47:06,249 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 06:47:07,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:07,242 INFO L93 Difference]: Finished difference Result 444 states and 620 transitions. [2023-11-23 06:47:07,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:47:07,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2023-11-23 06:47:07,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:07,244 INFO L225 Difference]: With dead ends: 444 [2023-11-23 06:47:07,244 INFO L226 Difference]: Without dead ends: 316 [2023-11-23 06:47:07,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=77, Invalid=432, Unknown=1, NotChecked=42, Total=552 [2023-11-23 06:47:07,245 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 72 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:07,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1127 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 350 Invalid, 1 Unknown, 273 Unchecked, 4.1s Time] [2023-11-23 06:47:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-23 06:47:07,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 290. [2023-11-23 06:47:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 184 states have (on average 1.2282608695652173) internal successors, (226), 188 states have internal predecessors, (226), 82 states have call successors, (82), 20 states have call predecessors, (82), 23 states have return successors, (88), 81 states have call predecessors, (88), 80 states have call successors, (88) [2023-11-23 06:47:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 396 transitions. [2023-11-23 06:47:07,298 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 396 transitions. Word has length 120 [2023-11-23 06:47:07,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:07,299 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 396 transitions. [2023-11-23 06:47:07,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:47:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 396 transitions. [2023-11-23 06:47:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 06:47:07,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:07,302 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-11-23 06:47:07,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 06:47:07,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:07,517 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:07,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash 800826667, now seen corresponding path program 1 times [2023-11-23 06:47:07,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:07,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524231790] [2023-11-23 06:47:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:07,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:07,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:47:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:47:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:47:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:47:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:47:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:47:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 06:47:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 06:47:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:47:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:47:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:47:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 06:47:08,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:08,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524231790] [2023-11-23 06:47:08,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524231790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:08,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903417640] [2023-11-23 06:47:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:08,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:08,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:08,195 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 06:47:08,221 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 06:47:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 2852 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-23 06:47:08,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:08,708 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 10 treesize of output 8 [2023-11-23 06:47:08,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:47:09,023 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 06:47:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 06:47:09,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:47:09,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903417640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:09,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:47:09,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2023-11-23 06:47:09,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183595549] [2023-11-23 06:47:09,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:09,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 06:47:09,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:09,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 06:47:09,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2023-11-23 06:47:09,265 INFO L87 Difference]: Start difference. First operand 290 states and 396 transitions. Second operand has 15 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 6 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-23 06:47:12,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:14,681 WARN L539 Checker$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 06:47:16,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:19,196 WARN L539 Checker$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 06:47:21,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:23,520 WARN L539 Checker$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 06:47:25,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:27,962 WARN L539 Checker$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 06:47:30,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:32,232 WARN L539 Checker$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 06:47:34,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:36,337 WARN L539 Checker$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 06:47:37,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:37,662 INFO L93 Difference]: Finished difference Result 551 states and 760 transitions. [2023-11-23 06:47:37,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 06:47:37,663 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 6 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 120 [2023-11-23 06:47:37,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:37,664 INFO L225 Difference]: With dead ends: 551 [2023-11-23 06:47:37,665 INFO L226 Difference]: Without dead ends: 313 [2023-11-23 06:47:37,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 129 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2023-11-23 06:47:37,666 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 207 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 83 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:37,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 2284 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1683 Invalid, 12 Unknown, 0 Unchecked, 28.2s Time] [2023-11-23 06:47:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-23 06:47:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 296. [2023-11-23 06:47:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 188 states have (on average 1.2287234042553192) internal successors, (231), 193 states have internal predecessors, (231), 84 states have call successors, (84), 20 states have call predecessors, (84), 23 states have return successors, (90), 82 states have call predecessors, (90), 82 states have call successors, (90) [2023-11-23 06:47:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 405 transitions. [2023-11-23 06:47:37,687 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 405 transitions. Word has length 120 [2023-11-23 06:47:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:37,687 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 405 transitions. [2023-11-23 06:47:37,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 6 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-23 06:47:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 405 transitions. [2023-11-23 06:47:37,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 06:47:37,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:37,689 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:37,706 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 06:47:37,904 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,SelfDestructingSolverStorable10 [2023-11-23 06:47:37,905 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:37,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:37,905 INFO L85 PathProgramCache]: Analyzing trace with hash -976297039, now seen corresponding path program 1 times [2023-11-23 06:47:37,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:37,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999524304] [2023-11-23 06:47:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:37,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:47:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:47:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:47:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:47:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:47:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:47:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:47:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:47:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:47:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:47:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:47:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 06:47:38,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:38,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999524304] [2023-11-23 06:47:38,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999524304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:38,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084410713] [2023-11-23 06:47:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:38,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:38,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:38,592 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 06:47:38,593 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 06:47:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:39,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-23 06:47:39,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:39,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-11-23 06:47:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-23 06:47:39,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:47:39,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084410713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:39,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:47:39,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-23 06:47:39,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297769704] [2023-11-23 06:47:39,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:39,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:47:39,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:39,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:47:39,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:47:39,379 INFO L87 Difference]: Start difference. First operand 296 states and 405 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:47:41,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:44,620 WARN L539 Checker$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 06:47:46,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:48,664 WARN L539 Checker$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 06:47:50,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:52,758 WARN L539 Checker$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 06:47:54,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:56,849 WARN L539 Checker$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 06:47:59,104 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 06:47:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:59,377 INFO L93 Difference]: Finished difference Result 398 states and 543 transitions. [2023-11-23 06:47:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:47:59,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2023-11-23 06:47:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:59,383 INFO L225 Difference]: With dead ends: 398 [2023-11-23 06:47:59,383 INFO L226 Difference]: Without dead ends: 309 [2023-11-23 06:47:59,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-23 06:47:59,384 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 60 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:59,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 458 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 9 Unknown, 0 Unchecked, 19.9s Time] [2023-11-23 06:47:59,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-23 06:47:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 302. [2023-11-23 06:47:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 193 states have (on average 1.2279792746113989) internal successors, (237), 198 states have internal predecessors, (237), 84 states have call successors, (84), 21 states have call predecessors, (84), 24 states have return successors, (90), 82 states have call predecessors, (90), 82 states have call successors, (90) [2023-11-23 06:47:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 411 transitions. [2023-11-23 06:47:59,406 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 411 transitions. Word has length 124 [2023-11-23 06:47:59,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:59,407 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 411 transitions. [2023-11-23 06:47:59,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:47:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 411 transitions. [2023-11-23 06:47:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 06:47:59,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:59,408 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:59,429 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 06:47:59,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:59,616 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:59,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:59,617 INFO L85 PathProgramCache]: Analyzing trace with hash -275232461, now seen corresponding path program 1 times [2023-11-23 06:47:59,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:59,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156266126] [2023-11-23 06:47:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:59,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:48:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:48:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:48:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:48:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:48:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:48:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:48:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:48:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:48:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:48:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 06:48:00,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:00,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156266126] [2023-11-23 06:48:00,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156266126] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:00,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671810388] [2023-11-23 06:48:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:00,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:00,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:00,276 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 06:48:00,279 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 06:48:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 06:48:00,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:00,814 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 37 treesize of output 1 [2023-11-23 06:48:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 06:48:00,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:00,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671810388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:00,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:00,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-11-23 06:48:00,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813223673] [2023-11-23 06:48:00,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:00,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:48:00,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:00,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:48:00,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:48:00,914 INFO L87 Difference]: Start difference. First operand 302 states and 411 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:48:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:01,521 INFO L93 Difference]: Finished difference Result 614 states and 865 transitions. [2023-11-23 06:48:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:48:01,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 124 [2023-11-23 06:48:01,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:01,524 INFO L225 Difference]: With dead ends: 614 [2023-11-23 06:48:01,524 INFO L226 Difference]: Without dead ends: 324 [2023-11-23 06:48:01,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:48:01,525 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 47 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:01,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 537 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:48:01,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-11-23 06:48:01,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 300. [2023-11-23 06:48:01,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 191 states have (on average 1.2094240837696335) internal successors, (231), 196 states have internal predecessors, (231), 84 states have call successors, (84), 21 states have call predecessors, (84), 24 states have return successors, (90), 82 states have call predecessors, (90), 82 states have call successors, (90) [2023-11-23 06:48:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 405 transitions. [2023-11-23 06:48:01,545 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 405 transitions. Word has length 124 [2023-11-23 06:48:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:01,545 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 405 transitions. [2023-11-23 06:48:01,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:48:01,546 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 405 transitions. [2023-11-23 06:48:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 06:48:01,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:01,547 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:01,566 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 06:48:01,756 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,SelfDestructingSolverStorable12 [2023-11-23 06:48:01,757 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:01,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:01,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1831400948, now seen corresponding path program 1 times [2023-11-23 06:48:01,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:01,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355279212] [2023-11-23 06:48:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:01,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:48:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:48:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:48:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:48:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:48:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:48:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:48:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:48:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:48:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:48:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-23 06:48:02,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:02,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355279212] [2023-11-23 06:48:02,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355279212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:02,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:48:02,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 06:48:02,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566703877] [2023-11-23 06:48:02,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:02,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:48:02,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:02,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:48:02,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:48:02,544 INFO L87 Difference]: Start difference. First operand 300 states and 405 transitions. Second operand has 12 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:48:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:04,351 INFO L93 Difference]: Finished difference Result 325 states and 443 transitions. [2023-11-23 06:48:04,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 06:48:04,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 126 [2023-11-23 06:48:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:04,353 INFO L225 Difference]: With dead ends: 325 [2023-11-23 06:48:04,353 INFO L226 Difference]: Without dead ends: 323 [2023-11-23 06:48:04,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:48:04,354 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 151 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:04,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1038 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 06:48:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-23 06:48:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 302. [2023-11-23 06:48:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 193 states have (on average 1.2072538860103628) internal successors, (233), 198 states have internal predecessors, (233), 84 states have call successors, (84), 21 states have call predecessors, (84), 24 states have return successors, (90), 82 states have call predecessors, (90), 82 states have call successors, (90) [2023-11-23 06:48:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 407 transitions. [2023-11-23 06:48:04,374 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 407 transitions. Word has length 126 [2023-11-23 06:48:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:04,374 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 407 transitions. [2023-11-23 06:48:04,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:48:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 407 transitions. [2023-11-23 06:48:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 06:48:04,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:04,376 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:04,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 06:48:04,376 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:04,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2070539338, now seen corresponding path program 1 times [2023-11-23 06:48:04,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:04,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677211229] [2023-11-23 06:48:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:04,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:48:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:48:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:48:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:48:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:48:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:48:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:48:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:48:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:48:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:48:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 06:48:04,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:04,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677211229] [2023-11-23 06:48:04,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677211229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:04,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741972822] [2023-11-23 06:48:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:04,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:04,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:04,992 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 06:48:04,993 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 06:48:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:05,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 2869 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-23 06:48:05,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:05,499 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 10 treesize of output 8 [2023-11-23 06:48:05,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:48:05,801 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 06:48:06,306 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 39 treesize of output 13 [2023-11-23 06:48:06,361 INFO L349 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2023-11-23 06:48:06,362 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 2 case distinctions, treesize of input 86 treesize of output 96 [2023-11-23 06:48:06,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 1 [2023-11-23 06:48:06,495 INFO L349 Elim1Store]: treesize reduction 228, result has 22.2 percent of original size [2023-11-23 06:48:06,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 116 [2023-11-23 06:48:07,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:48:07,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 132 treesize of output 138 [2023-11-23 06:48:08,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:48:08,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 114 treesize of output 212 [2023-11-23 06:48:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 43 proven. 50 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-23 06:48:09,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:48:21,520 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 23 treesize of output 21 [2023-11-23 06:48:21,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:48:21,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 15 [2023-11-23 06:48:21,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:48:21,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 22 treesize of output 14 [2023-11-23 06:48:21,699 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2472 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_byte_buf_advance_harness_~#output~0#1.base| v_ArrVal_2472) |c_ULTIMATE.start_aws_byte_buf_advance_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_advance_harness_~#buf~3#1.offset| 8)) 0))) is different from false [2023-11-23 06:48:21,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741972822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:21,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:48:21,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 27] total 36 [2023-11-23 06:48:21,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797804397] [2023-11-23 06:48:21,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:48:21,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-23 06:48:21,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:21,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-23 06:48:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2211, Unknown=7, NotChecked=94, Total=2450 [2023-11-23 06:48:21,705 INFO L87 Difference]: Start difference. First operand 302 states and 407 transitions. Second operand has 36 states, 29 states have (on average 3.793103448275862) internal successors, (110), 29 states have internal predecessors, (110), 10 states have call successors, (31), 7 states have call predecessors, (31), 8 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) [2023-11-23 06:48:23,961 WARN L539 Checker$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 06:48:29,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:32,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:34,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:36,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:39,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:42,087 WARN L539 Checker$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 06:48:47,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:49,304 WARN L539 Checker$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 06:48:51,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:54,372 WARN L539 Checker$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 06:48:56,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:59,102 WARN L539 Checker$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 06:49:01,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:04,448 WARN L539 Checker$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 06:49:09,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:12,445 WARN L539 Checker$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 06:49:15,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:18,318 WARN L539 Checker$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 06:49:22,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:24,135 WARN L539 Checker$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 06:49:26,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:28,255 WARN L539 Checker$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 06:49:30,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:32,817 WARN L539 Checker$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 06:49:36,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:38,425 WARN L539 Checker$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 06:49:40,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:42,741 WARN L539 Checker$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 06:49:44,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:46,829 WARN L539 Checker$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 06:49:49,105 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