./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_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 8b61e347701f0c89420e753e852eb314cc29dd4fd4a4715a05b300c448d0ac03 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 13:03:09,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 13:03:09,506 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 13:03:09,509 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 13:03:09,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 13:03:09,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 13:03:09,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 13:03:09,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 13:03:09,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 13:03:09,535 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 13:03:09,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 13:03:09,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 13:03:09,536 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 13:03:09,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 13:03:09,538 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 13:03:09,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 13:03:09,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 13:03:09,539 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 13:03:09,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 13:03:09,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 13:03:09,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 13:03:09,542 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 13:03:09,542 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 13:03:09,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 13:03:09,542 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 13:03:09,543 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 13:03:09,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 13:03:09,543 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 13:03:09,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 13:03:09,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 13:03:09,544 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 13:03:09,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 13:03:09,544 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 13:03:09,544 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 13:03:09,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 13:03:09,545 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 13:03:09,545 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 13:03:09,545 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 13:03:09,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 13:03:09,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b61e347701f0c89420e753e852eb314cc29dd4fd4a4715a05b300c448d0ac03 [2024-10-24 13:03:09,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 13:03:09,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 13:03:09,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 13:03:09,772 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 13:03:09,773 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 13:03:09,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_harness.i [2024-10-24 13:03:10,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 13:03:11,332 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 13:03:11,333 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_harness.i [2024-10-24 13:03:11,362 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0993fe0b/2c8a05519e814bc1958e5dc251922fc3/FLAG43447a199 [2024-10-24 13:03:11,546 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0993fe0b/2c8a05519e814bc1958e5dc251922fc3 [2024-10-24 13:03:11,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 13:03:11,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 13:03:11,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 13:03:11,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 13:03:11,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 13:03:11,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:03:11" (1/1) ... [2024-10-24 13:03:11,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a09b128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:11, skipping insertion in model container [2024-10-24 13:03:11,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:03:11" (1/1) ... [2024-10-24 13:03:11,627 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 13:03:11,858 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_harness.i[4487,4500] [2024-10-24 13:03:11,863 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_harness.i[4547,4560] [2024-10-24 13:03:12,423 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,424 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,424 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,425 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,425 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,438 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,439 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,440 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,441 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,866 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,866 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 13:03:12,918 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 13:03:12,932 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_harness.i[4487,4500] [2024-10-24 13:03:12,933 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_harness.i[4547,4560] [2024-10-24 13:03:12,963 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,963 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,963 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,964 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,964 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,972 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,972 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,973 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:12,973 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:13,040 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8588] [2024-10-24 13:03:13,042 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:13,042 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 13:03:13,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 13:03:13,270 INFO L204 MainTranslator]: Completed translation [2024-10-24 13:03:13,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13 WrapperNode [2024-10-24 13:03:13,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 13:03:13,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 13:03:13,272 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 13:03:13,272 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 13:03:13,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,385 INFO L138 Inliner]: procedures = 670, calls = 2259, calls flagged for inlining = 58, calls inlined = 6, statements flattened = 388 [2024-10-24 13:03:13,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 13:03:13,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 13:03:13,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 13:03:13,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 13:03:13,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,423 INFO L175 MemorySlicer]: Split 276 memory accesses to 4 slices as follows [2, 13, 5, 256]. 93 percent of accesses are in the largest equivalence class. The 263 initializations are split as follows [2, 0, 5, 256]. The 3 writes are split as follows [0, 3, 0, 0]. [2024-10-24 13:03:13,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,511 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 13:03:13,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 13:03:13,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 13:03:13,513 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 13:03:13,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (1/1) ... [2024-10-24 13:03:13,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 13:03:13,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 13:03:13,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 13:03:13,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 13:03:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-10-24 13:03:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-10-24 13:03:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-10-24 13:03:13,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-10-24 13:03:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-10-24 13:03:13,586 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-10-24 13:03:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 13:03:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 13:03:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 13:03:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 13:03:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 13:03:13,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 13:03:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 13:03:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 13:03:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 13:03:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 13:03:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 13:03:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 13:03:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 13:03:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 13:03:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-10-24 13:03:13,589 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-10-24 13:03:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 13:03:13,589 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 13:03:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2024-10-24 13:03:13,589 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2024-10-24 13:03:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-24 13:03:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-24 13:03:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-24 13:03:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-24 13:03:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-10-24 13:03:13,590 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-10-24 13:03:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-10-24 13:03:13,590 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-10-24 13:03:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 13:03:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 13:03:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 13:03:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 13:03:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 13:03:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 13:03:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 13:03:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 13:03:13,782 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 13:03:13,784 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 13:03:14,077 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-10-24 13:03:14,078 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 13:03:14,121 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 13:03:14,123 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 13:03:14,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:03:14 BoogieIcfgContainer [2024-10-24 13:03:14,123 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 13:03:14,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 13:03:14,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 13:03:14,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 13:03:14,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:03:11" (1/3) ... [2024-10-24 13:03:14,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72be90a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:03:14, skipping insertion in model container [2024-10-24 13:03:14,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:13" (2/3) ... [2024-10-24 13:03:14,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72be90a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:03:14, skipping insertion in model container [2024-10-24 13:03:14,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:03:14" (3/3) ... [2024-10-24 13:03:14,131 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_harness.i [2024-10-24 13:03:14,144 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 13:03:14,144 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 13:03:14,191 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 13:03:14,197 INFO L333 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, 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;@41917026, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 13:03:14,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 13:03:14,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 55 states have (on average 1.290909090909091) internal successors, (71), 56 states have internal predecessors, (71), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-24 13:03:14,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-24 13:03:14,209 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:14,209 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 13:03:14,209 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:14,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:14,213 INFO L85 PathProgramCache]: Analyzing trace with hash -328840337, now seen corresponding path program 1 times [2024-10-24 13:03:14,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:14,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492294600] [2024-10-24 13:03:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:14,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:14,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:14,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 13:03:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:14,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 13:03:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:14,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 13:03:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 13:03:14,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:14,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492294600] [2024-10-24 13:03:14,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492294600] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 13:03:14,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 13:03:14,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 13:03:14,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737531934] [2024-10-24 13:03:14,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 13:03:14,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 13:03:14,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:14,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 13:03:14,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 13:03:14,624 INFO L87 Difference]: Start difference. First operand has 92 states, 55 states have (on average 1.290909090909091) internal successors, (71), 56 states have internal predecessors, (71), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 13:03:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:14,678 INFO L93 Difference]: Finished difference Result 180 states and 255 transitions. [2024-10-24 13:03:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 13:03:14,680 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-10-24 13:03:14,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:14,689 INFO L225 Difference]: With dead ends: 180 [2024-10-24 13:03:14,689 INFO L226 Difference]: Without dead ends: 89 [2024-10-24 13:03:14,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 13:03:14,696 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:14,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 13:03:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-24 13:03:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-10-24 13:03:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 54 states have internal predecessors, (66), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 13:03:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 117 transitions. [2024-10-24 13:03:14,737 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 117 transitions. Word has length 32 [2024-10-24 13:03:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:14,738 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 117 transitions. [2024-10-24 13:03:14,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 13:03:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 117 transitions. [2024-10-24 13:03:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-24 13:03:14,740 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:14,740 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 13:03:14,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 13:03:14,741 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:14,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:14,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1621920465, now seen corresponding path program 1 times [2024-10-24 13:03:14,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:14,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182875139] [2024-10-24 13:03:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:14,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:14,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:14,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 13:03:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 13:03:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 13:03:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 13:03:15,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:15,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182875139] [2024-10-24 13:03:15,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182875139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 13:03:15,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 13:03:15,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 13:03:15,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493436553] [2024-10-24 13:03:15,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 13:03:15,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 13:03:15,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:15,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 13:03:15,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 13:03:15,052 INFO L87 Difference]: Start difference. First operand 89 states and 117 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 13:03:15,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:15,122 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2024-10-24 13:03:15,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 13:03:15,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-10-24 13:03:15,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:15,129 INFO L225 Difference]: With dead ends: 145 [2024-10-24 13:03:15,130 INFO L226 Difference]: Without dead ends: 89 [2024-10-24 13:03:15,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 13:03:15,132 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 10 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:15,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 317 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 13:03:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-24 13:03:15,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-10-24 13:03:15,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 54 states have internal predecessors, (65), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 13:03:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 116 transitions. [2024-10-24 13:03:15,141 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 116 transitions. Word has length 32 [2024-10-24 13:03:15,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:15,141 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 116 transitions. [2024-10-24 13:03:15,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 13:03:15,142 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 116 transitions. [2024-10-24 13:03:15,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 13:03:15,146 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:15,146 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 13:03:15,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 13:03:15,147 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:15,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:15,147 INFO L85 PathProgramCache]: Analyzing trace with hash 420847632, now seen corresponding path program 1 times [2024-10-24 13:03:15,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:15,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598766135] [2024-10-24 13:03:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:15,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 13:03:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 13:03:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 13:03:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 13:03:15,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:15,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598766135] [2024-10-24 13:03:15,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598766135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 13:03:15,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 13:03:15,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 13:03:15,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863366973] [2024-10-24 13:03:15,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 13:03:15,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 13:03:15,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:15,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 13:03:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-24 13:03:15,830 INFO L87 Difference]: Start difference. First operand 89 states and 116 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-24 13:03:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:16,271 INFO L93 Difference]: Finished difference Result 143 states and 187 transitions. [2024-10-24 13:03:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 13:03:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 61 [2024-10-24 13:03:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:16,273 INFO L225 Difference]: With dead ends: 143 [2024-10-24 13:03:16,273 INFO L226 Difference]: Without dead ends: 89 [2024-10-24 13:03:16,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-10-24 13:03:16,274 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 57 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:16,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 523 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 13:03:16,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-24 13:03:16,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-10-24 13:03:16,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 54 states have internal predecessors, (64), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 13:03:16,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2024-10-24 13:03:16,286 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 61 [2024-10-24 13:03:16,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:16,287 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2024-10-24 13:03:16,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-24 13:03:16,287 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2024-10-24 13:03:16,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 13:03:16,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:16,288 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 13:03:16,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 13:03:16,288 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:16,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash 840378699, now seen corresponding path program 1 times [2024-10-24 13:03:16,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:16,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985224274] [2024-10-24 13:03:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:16,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 13:03:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 13:03:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 13:03:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 13:03:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 13:03:16,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:16,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985224274] [2024-10-24 13:03:16,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985224274] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 13:03:16,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 13:03:16,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-10-24 13:03:16,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260171576] [2024-10-24 13:03:16,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 13:03:16,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 13:03:16,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:16,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 13:03:16,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-24 13:03:16,907 INFO L87 Difference]: Start difference. First operand 89 states and 115 transitions. Second operand has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-10-24 13:03:17,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:17,365 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2024-10-24 13:03:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 13:03:17,366 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 69 [2024-10-24 13:03:17,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:17,367 INFO L225 Difference]: With dead ends: 154 [2024-10-24 13:03:17,367 INFO L226 Difference]: Without dead ends: 105 [2024-10-24 13:03:17,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-10-24 13:03:17,369 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 111 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:17,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 513 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 13:03:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-10-24 13:03:17,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2024-10-24 13:03:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 59 states have internal predecessors, (69), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-24 13:03:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 124 transitions. [2024-10-24 13:03:17,380 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 124 transitions. Word has length 69 [2024-10-24 13:03:17,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:17,381 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 124 transitions. [2024-10-24 13:03:17,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-10-24 13:03:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 124 transitions. [2024-10-24 13:03:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 13:03:17,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:17,383 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-10-24 13:03:17,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 13:03:17,383 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:17,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:17,383 INFO L85 PathProgramCache]: Analyzing trace with hash -171411282, now seen corresponding path program 1 times [2024-10-24 13:03:17,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:17,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859434226] [2024-10-24 13:03:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:17,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:18,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:18,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:18,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:18,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:18,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:18,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:18,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:18,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 13:03:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:18,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 13:03:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:19,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 13:03:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:19,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 13:03:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:19,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 13:03:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 13:03:19,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:19,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859434226] [2024-10-24 13:03:19,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859434226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 13:03:19,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 13:03:19,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-10-24 13:03:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956159808] [2024-10-24 13:03:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 13:03:19,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 13:03:19,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:19,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 13:03:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-10-24 13:03:19,040 INFO L87 Difference]: Start difference. First operand 96 states and 124 transitions. Second operand has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-24 13:03:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:19,587 INFO L93 Difference]: Finished difference Result 129 states and 170 transitions. [2024-10-24 13:03:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 13:03:19,590 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 77 [2024-10-24 13:03:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:19,592 INFO L225 Difference]: With dead ends: 129 [2024-10-24 13:03:19,592 INFO L226 Difference]: Without dead ends: 127 [2024-10-24 13:03:19,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-10-24 13:03:19,593 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 125 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:19,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 616 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 13:03:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-10-24 13:03:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 111. [2024-10-24 13:03:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 70 states have internal predecessors, (81), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-24 13:03:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2024-10-24 13:03:19,606 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 77 [2024-10-24 13:03:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:19,607 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2024-10-24 13:03:19,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-24 13:03:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2024-10-24 13:03:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-24 13:03:19,609 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:19,609 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 13:03:19,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 13:03:19,609 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:19,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:19,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1689466713, now seen corresponding path program 1 times [2024-10-24 13:03:19,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:19,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037321779] [2024-10-24 13:03:19,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:19,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 13:03:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 13:03:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 13:03:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 13:03:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 13:03:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 13:03:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 13:03:20,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037321779] [2024-10-24 13:03:20,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037321779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 13:03:20,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 13:03:20,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-10-24 13:03:20,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048799793] [2024-10-24 13:03:20,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 13:03:20,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 13:03:20,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:20,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 13:03:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-10-24 13:03:20,515 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 17 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-24 13:03:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:21,186 INFO L93 Difference]: Finished difference Result 132 states and 172 transitions. [2024-10-24 13:03:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 13:03:21,187 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 83 [2024-10-24 13:03:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:21,188 INFO L225 Difference]: With dead ends: 132 [2024-10-24 13:03:21,188 INFO L226 Difference]: Without dead ends: 130 [2024-10-24 13:03:21,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2024-10-24 13:03:21,189 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 97 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:21,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 712 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 13:03:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-10-24 13:03:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 117. [2024-10-24 13:03:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 74 states have internal predecessors, (85), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-24 13:03:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2024-10-24 13:03:21,200 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 83 [2024-10-24 13:03:21,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:21,200 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2024-10-24 13:03:21,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-24 13:03:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2024-10-24 13:03:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-24 13:03:21,201 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:21,202 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 13:03:21,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 13:03:21,202 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:21,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:21,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1589957396, now seen corresponding path program 1 times [2024-10-24 13:03:21,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:21,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184986325] [2024-10-24 13:03:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 13:03:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 13:03:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 13:03:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 13:03:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 13:03:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-10-24 13:03:21,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184986325] [2024-10-24 13:03:21,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184986325] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 13:03:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672336666] [2024-10-24 13:03:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:21,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 13:03:21,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 13:03:21,728 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) [2024-10-24 13:03:21,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 13:03:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:21,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 13:03:21,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 13:03:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-10-24 13:03:22,112 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 13:03:22,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672336666] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 13:03:22,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 13:03:22,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 20 [2024-10-24 13:03:22,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022846579] [2024-10-24 13:03:22,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 13:03:22,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 13:03:22,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 13:03:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2024-10-24 13:03:22,115 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2024-10-24 13:03:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:22,270 INFO L93 Difference]: Finished difference Result 161 states and 205 transitions. [2024-10-24 13:03:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 13:03:22,271 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 98 [2024-10-24 13:03:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:22,273 INFO L225 Difference]: With dead ends: 161 [2024-10-24 13:03:22,274 INFO L226 Difference]: Without dead ends: 118 [2024-10-24 13:03:22,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2024-10-24 13:03:22,275 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 18 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:22,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1161 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 13:03:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-10-24 13:03:22,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2024-10-24 13:03:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-24 13:03:22,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 149 transitions. [2024-10-24 13:03:22,290 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 149 transitions. Word has length 98 [2024-10-24 13:03:22,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:22,291 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 149 transitions. [2024-10-24 13:03:22,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2024-10-24 13:03:22,292 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 149 transitions. [2024-10-24 13:03:22,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-24 13:03:22,294 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:22,294 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 13:03:22,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 13:03:22,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 13:03:22,495 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:22,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash 222513999, now seen corresponding path program 1 times [2024-10-24 13:03:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:22,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774669627] [2024-10-24 13:03:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:22,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 13:03:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 13:03:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 13:03:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 13:03:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 13:03:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-24 13:03:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-24 13:03:23,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:23,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774669627] [2024-10-24 13:03:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774669627] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 13:03:23,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406180718] [2024-10-24 13:03:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:23,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 13:03:23,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 13:03:23,383 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) [2024-10-24 13:03:23,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 13:03:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:23,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-24 13:03:23,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 13:03:23,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 13:03:23,775 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 13:03:23,775 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 11 treesize of output 11 [2024-10-24 13:03:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-24 13:03:23,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 13:03:23,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406180718] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 13:03:23,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 13:03:23,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2024-10-24 13:03:23,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258285601] [2024-10-24 13:03:23,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 13:03:23,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 13:03:23,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 13:03:23,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2024-10-24 13:03:23,946 INFO L87 Difference]: Start difference. First operand 117 states and 149 transitions. Second operand has 20 states, 16 states have (on average 3.125) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (20), 10 states have call predecessors, (20), 6 states have call successors, (20) [2024-10-24 13:03:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:24,843 INFO L93 Difference]: Finished difference Result 167 states and 213 transitions. [2024-10-24 13:03:24,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 13:03:24,844 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.125) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (20), 10 states have call predecessors, (20), 6 states have call successors, (20) Word has length 106 [2024-10-24 13:03:24,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:24,845 INFO L225 Difference]: With dead ends: 167 [2024-10-24 13:03:24,845 INFO L226 Difference]: Without dead ends: 131 [2024-10-24 13:03:24,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 183 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2024-10-24 13:03:24,846 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 119 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:24,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 678 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 13:03:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-10-24 13:03:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 117. [2024-10-24 13:03:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 74 states have internal predecessors, (83), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-24 13:03:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 148 transitions. [2024-10-24 13:03:24,858 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 148 transitions. Word has length 106 [2024-10-24 13:03:24,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:24,859 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 148 transitions. [2024-10-24 13:03:24,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.125) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (20), 10 states have call predecessors, (20), 6 states have call successors, (20) [2024-10-24 13:03:24,859 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 148 transitions. [2024-10-24 13:03:24,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 13:03:24,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:24,860 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 13:03:24,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 13:03:25,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-24 13:03:25,061 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:25,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash 610645299, now seen corresponding path program 1 times [2024-10-24 13:03:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:25,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899260960] [2024-10-24 13:03:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:25,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 13:03:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 13:03:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 13:03:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 13:03:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 13:03:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-24 13:03:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-24 13:03:25,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899260960] [2024-10-24 13:03:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899260960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 13:03:25,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 13:03:25,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-10-24 13:03:25,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333286224] [2024-10-24 13:03:25,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 13:03:25,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 13:03:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 13:03:25,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-10-24 13:03:25,775 INFO L87 Difference]: Start difference. First operand 117 states and 148 transitions. Second operand has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) [2024-10-24 13:03:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:26,237 INFO L93 Difference]: Finished difference Result 167 states and 205 transitions. [2024-10-24 13:03:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 13:03:26,238 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) Word has length 107 [2024-10-24 13:03:26,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:26,239 INFO L225 Difference]: With dead ends: 167 [2024-10-24 13:03:26,239 INFO L226 Difference]: Without dead ends: 118 [2024-10-24 13:03:26,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-10-24 13:03:26,241 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 93 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:26,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 543 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 13:03:26,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-10-24 13:03:26,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2024-10-24 13:03:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.125) internal successors, (81), 74 states have internal predecessors, (81), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-24 13:03:26,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2024-10-24 13:03:26,259 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 107 [2024-10-24 13:03:26,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:26,259 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2024-10-24 13:03:26,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) [2024-10-24 13:03:26,259 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2024-10-24 13:03:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 13:03:26,260 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:26,260 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1] [2024-10-24 13:03:26,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 13:03:26,264 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:26,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:26,265 INFO L85 PathProgramCache]: Analyzing trace with hash -462586971, now seen corresponding path program 1 times [2024-10-24 13:03:26,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:26,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970241688] [2024-10-24 13:03:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:26,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:29,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:29,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 13:03:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 13:03:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 13:03:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 13:03:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 13:03:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 13:03:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 13:03:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:30,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 13:03:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 13:03:31,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:31,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970241688] [2024-10-24 13:03:31,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970241688] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 13:03:31,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899324390] [2024-10-24 13:03:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:31,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 13:03:31,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 13:03:31,190 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) [2024-10-24 13:03:31,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 13:03:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:31,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-10-24 13:03:31,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 13:03:31,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2024-10-24 13:03:31,809 INFO L349 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2024-10-24 13:03:31,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 106 [2024-10-24 13:03:31,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 13:03:31,846 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-24 13:03:31,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 11 [2024-10-24 13:03:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 13:03:35,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 13:03:37,087 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 51 treesize of output 47 [2024-10-24 13:03:37,123 INFO L349 Elim1Store]: treesize reduction 23, result has 61.7 percent of original size [2024-10-24 13:03:37,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 101 [2024-10-24 13:03:37,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 13:03:37,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 14 [2024-10-24 13:03:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-24 13:03:37,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899324390] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 13:03:37,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 13:03:37,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30, 25] total 81 [2024-10-24 13:03:37,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350007889] [2024-10-24 13:03:37,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 13:03:37,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-10-24 13:03:37,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:37,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-10-24 13:03:37,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=6133, Unknown=0, NotChecked=0, Total=6480 [2024-10-24 13:03:37,526 INFO L87 Difference]: Start difference. First operand 117 states and 146 transitions. Second operand has 81 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 29 states have call successors, (43), 7 states have call predecessors, (43), 13 states have return successors, (41), 29 states have call predecessors, (41), 26 states have call successors, (41) [2024-10-24 13:03:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:48,060 INFO L93 Difference]: Finished difference Result 193 states and 243 transitions. [2024-10-24 13:03:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-24 13:03:48,061 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 29 states have call successors, (43), 7 states have call predecessors, (43), 13 states have return successors, (41), 29 states have call predecessors, (41), 26 states have call successors, (41) Word has length 97 [2024-10-24 13:03:48,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:48,062 INFO L225 Difference]: With dead ends: 193 [2024-10-24 13:03:48,062 INFO L226 Difference]: Without dead ends: 191 [2024-10-24 13:03:48,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 172 SyntacticMatches, 7 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4233 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=969, Invalid=15543, Unknown=0, NotChecked=0, Total=16512 [2024-10-24 13:03:48,066 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 240 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 5234 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 5452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 5234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:48,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1612 Invalid, 5452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 5234 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-10-24 13:03:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-10-24 13:03:48,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 176. [2024-10-24 13:03:48,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 106 states have (on average 1.1226415094339623) internal successors, (119), 111 states have internal predecessors, (119), 48 states have call successors, (48), 20 states have call predecessors, (48), 21 states have return successors, (55), 44 states have call predecessors, (55), 46 states have call successors, (55) [2024-10-24 13:03:48,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 222 transitions. [2024-10-24 13:03:48,094 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 222 transitions. Word has length 97 [2024-10-24 13:03:48,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:48,094 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 222 transitions. [2024-10-24 13:03:48,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 29 states have call successors, (43), 7 states have call predecessors, (43), 13 states have return successors, (41), 29 states have call predecessors, (41), 26 states have call successors, (41) [2024-10-24 13:03:48,094 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 222 transitions. [2024-10-24 13:03:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 13:03:48,097 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:48,097 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 13:03:48,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 13:03:48,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 13:03:48,298 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:48,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:48,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1312420391, now seen corresponding path program 1 times [2024-10-24 13:03:48,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:48,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026830248] [2024-10-24 13:03:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:48,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 13:03:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 13:03:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 13:03:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 13:03:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 13:03:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 13:03:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 13:03:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 13:03:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-24 13:03:48,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:48,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026830248] [2024-10-24 13:03:48,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026830248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 13:03:48,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 13:03:48,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-10-24 13:03:48,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540511141] [2024-10-24 13:03:48,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 13:03:48,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 13:03:48,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:48,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 13:03:48,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-24 13:03:48,757 INFO L87 Difference]: Start difference. First operand 176 states and 222 transitions. Second operand has 15 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-24 13:03:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:49,237 INFO L93 Difference]: Finished difference Result 218 states and 278 transitions. [2024-10-24 13:03:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 13:03:49,238 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 97 [2024-10-24 13:03:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:49,239 INFO L225 Difference]: With dead ends: 218 [2024-10-24 13:03:49,239 INFO L226 Difference]: Without dead ends: 184 [2024-10-24 13:03:49,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-10-24 13:03:49,240 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 84 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:49,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 586 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 13:03:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-24 13:03:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-10-24 13:03:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 112 states have (on average 1.1339285714285714) internal successors, (127), 119 states have internal predecessors, (127), 48 states have call successors, (48), 20 states have call predecessors, (48), 23 states have return successors, (61), 44 states have call predecessors, (61), 46 states have call successors, (61) [2024-10-24 13:03:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 236 transitions. [2024-10-24 13:03:49,262 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 236 transitions. Word has length 97 [2024-10-24 13:03:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:49,262 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 236 transitions. [2024-10-24 13:03:49,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-24 13:03:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 236 transitions. [2024-10-24 13:03:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 13:03:49,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:49,264 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 13:03:49,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 13:03:49,265 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:49,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:49,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1992478761, now seen corresponding path program 1 times [2024-10-24 13:03:49,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:49,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921432783] [2024-10-24 13:03:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:49,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 13:03:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 13:03:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 13:03:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 13:03:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 13:03:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 13:03:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 13:03:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 13:03:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-24 13:03:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921432783] [2024-10-24 13:03:49,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921432783] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 13:03:49,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 13:03:49,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-10-24 13:03:49,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029299449] [2024-10-24 13:03:49,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 13:03:49,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 13:03:49,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:49,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 13:03:49,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-24 13:03:49,724 INFO L87 Difference]: Start difference. First operand 184 states and 236 transitions. Second operand has 15 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-24 13:03:50,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:50,218 INFO L93 Difference]: Finished difference Result 239 states and 304 transitions. [2024-10-24 13:03:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 13:03:50,218 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 97 [2024-10-24 13:03:50,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:50,220 INFO L225 Difference]: With dead ends: 239 [2024-10-24 13:03:50,220 INFO L226 Difference]: Without dead ends: 185 [2024-10-24 13:03:50,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-10-24 13:03:50,220 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 64 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:50,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 620 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 13:03:50,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-10-24 13:03:50,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2024-10-24 13:03:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 109 states have (on average 1.128440366972477) internal successors, (123), 113 states have internal predecessors, (123), 47 states have call successors, (47), 20 states have call predecessors, (47), 20 states have return successors, (51), 43 states have call predecessors, (51), 45 states have call successors, (51) [2024-10-24 13:03:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 221 transitions. [2024-10-24 13:03:50,244 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 221 transitions. Word has length 97 [2024-10-24 13:03:50,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:50,245 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 221 transitions. [2024-10-24 13:03:50,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-24 13:03:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 221 transitions. [2024-10-24 13:03:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 13:03:50,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:50,246 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 13:03:50,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 13:03:50,246 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:50,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:50,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1867309424, now seen corresponding path program 1 times [2024-10-24 13:03:50,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:50,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480860953] [2024-10-24 13:03:50,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:50,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:50,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:50,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 13:03:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 13:03:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 13:03:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 13:03:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 13:03:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 13:03:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 13:03:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 13:03:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 13:03:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 13:03:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 13:03:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 13:03:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 13:03:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:03:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-24 13:03:51,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 13:03:51,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480860953] [2024-10-24 13:03:51,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480860953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 13:03:51,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 13:03:51,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-10-24 13:03:51,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583838319] [2024-10-24 13:03:51,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 13:03:51,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 13:03:51,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 13:03:51,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 13:03:51,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-10-24 13:03:51,182 INFO L87 Difference]: Start difference. First operand 177 states and 221 transitions. Second operand has 17 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2024-10-24 13:03:51,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 13:03:51,777 INFO L93 Difference]: Finished difference Result 186 states and 231 transitions. [2024-10-24 13:03:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 13:03:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) Word has length 99 [2024-10-24 13:03:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 13:03:51,779 INFO L225 Difference]: With dead ends: 186 [2024-10-24 13:03:51,780 INFO L226 Difference]: Without dead ends: 184 [2024-10-24 13:03:51,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2024-10-24 13:03:51,780 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 68 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 13:03:51,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 726 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 13:03:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-24 13:03:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2024-10-24 13:03:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 112 states have (on average 1.125) internal successors, (126), 116 states have internal predecessors, (126), 47 states have call successors, (47), 21 states have call predecessors, (47), 21 states have return successors, (51), 43 states have call predecessors, (51), 45 states have call successors, (51) [2024-10-24 13:03:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 224 transitions. [2024-10-24 13:03:51,803 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 224 transitions. Word has length 99 [2024-10-24 13:03:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 13:03:51,803 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 224 transitions. [2024-10-24 13:03:51,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2024-10-24 13:03:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 224 transitions. [2024-10-24 13:03:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-24 13:03:51,804 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 13:03:51,804 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 13:03:51,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 13:03:51,805 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 13:03:51,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 13:03:51,805 INFO L85 PathProgramCache]: Analyzing trace with hash 718514393, now seen corresponding path program 1 times [2024-10-24 13:03:51,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 13:03:51,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924091079] [2024-10-24 13:03:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 13:03:51,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 13:03:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 13:04:26,613 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)