./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_byte_cursor_trim_pred_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_byte_cursor_trim_pred_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 71e5927fd394f7ee2b7e12cb164a1e2d1990ce0718c7f1e6f5935ec66026c1b2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:55:52,612 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:55:52,675 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 12:55:52,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:55:52,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:55:52,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:55:52,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:55:52,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:55:52,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:55:52,712 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:55:52,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:55:52,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:55:52,714 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:55:52,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:55:52,714 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:55:52,715 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:55:52,715 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:55:52,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:55:52,716 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:55:52,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:55:52,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:55:52,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:55:52,717 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:55:52,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:55:52,718 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:55:52,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:55:52,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:55:52,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:55:52,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:55:52,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:55:52,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:55:52,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:55:52,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:55:52,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:55:52,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:55:52,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:55:52,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:55:52,723 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:55:52,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:55:52,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71e5927fd394f7ee2b7e12cb164a1e2d1990ce0718c7f1e6f5935ec66026c1b2 [2024-10-24 12:55:52,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:55:53,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:55:53,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:55:53,009 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:55:53,010 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:55:53,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i [2024-10-24 12:55:54,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:55:54,812 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:55:54,812 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i [2024-10-24 12:55:54,850 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/706f4051b/3014a5386eb14e67ba25a4d5e02929a7/FLAG2fd9a2d01 [2024-10-24 12:55:54,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/706f4051b/3014a5386eb14e67ba25a4d5e02929a7 [2024-10-24 12:55:54,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:55:54,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:55:54,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:55:54,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:55:54,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:55:54,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:55:54" (1/1) ... [2024-10-24 12:55:54,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24083cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54, skipping insertion in model container [2024-10-24 12:55:54,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:55:54" (1/1) ... [2024-10-24 12:55:55,046 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:55:55,331 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_byte_cursor_trim_pred_harness.i[4499,4512] [2024-10-24 12:55:55,339 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_byte_cursor_trim_pred_harness.i[4559,4572] [2024-10-24 12:55:55,944 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:55,949 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:55,949 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:55,950 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:55,951 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:55,963 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:55,964 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:55,966 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:55,966 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,466 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,467 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:55:56,585 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:55:56,604 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_byte_cursor_trim_pred_harness.i[4499,4512] [2024-10-24 12:55:56,605 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_byte_cursor_trim_pred_harness.i[4559,4572] [2024-10-24 12:55:56,641 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,643 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,643 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,644 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,644 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,649 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,650 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,651 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,651 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8271] [2024-10-24 12:55:56,767 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,768 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:55:56,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8757-8768] [2024-10-24 12:55:56,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:55:57,121 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:55:57,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57 WrapperNode [2024-10-24 12:55:57,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:55:57,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:55:57,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:55:57,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:55:57,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,297 INFO L138 Inliner]: procedures = 679, calls = 2604, calls flagged for inlining = 62, calls inlined = 10, statements flattened = 898 [2024-10-24 12:55:57,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:55:57,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:55:57,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:55:57,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:55:57,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,323 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,396 INFO L175 MemorySlicer]: Split 554 memory accesses to 6 slices as follows [2, 256, 45, 240, 6, 5]. 46 percent of accesses are in the largest equivalence class. The 511 initializations are split as follows [2, 256, 12, 236, 0, 5]. The 6 writes are split as follows [0, 0, 4, 0, 2, 0]. [2024-10-24 12:55:57,398 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,399 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,441 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:55:57,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:55:57,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:55:57,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:55:57,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (1/1) ... [2024-10-24 12:55:57,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:55:57,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:55:57,521 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 12:55:57,525 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 12:55:57,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-10-24 12:55:57,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-10-24 12:55:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:55:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-10-24 12:55:57,579 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-10-24 12:55:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:55:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:55:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:55:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:55:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 12:55:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 12:55:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 12:55:57,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 12:55:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2024-10-24 12:55:57,579 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2024-10-24 12:55:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:55:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:55:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 12:55:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 12:55:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 12:55:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 12:55:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-24 12:55:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-24 12:55:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:55:57,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:55:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-10-24 12:55:57,580 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-10-24 12:55:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-10-24 12:55:57,580 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-10-24 12:55:57,580 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 12:55:57,581 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-10-24 12:55:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-10-24 12:55:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2024-10-24 12:55:57,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2024-10-24 12:55:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:55:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:55:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:55:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:55:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 12:55:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 12:55:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:55:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:55:57,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:55:57,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:55:57,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 12:55:57,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 12:55:57,988 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:55:57,991 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:55:58,861 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2024-10-24 12:55:58,862 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:55:59,107 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:55:59,108 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 12:55:59,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:55:59 BoogieIcfgContainer [2024-10-24 12:55:59,108 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:55:59,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:55:59,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:55:59,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:55:59,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:55:54" (1/3) ... [2024-10-24 12:55:59,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9dd5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:55:59, skipping insertion in model container [2024-10-24 12:55:59,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:57" (2/3) ... [2024-10-24 12:55:59,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9dd5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:55:59, skipping insertion in model container [2024-10-24 12:55:59,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:55:59" (3/3) ... [2024-10-24 12:55:59,120 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_trim_pred_harness.i [2024-10-24 12:55:59,135 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:55:59,136 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:55:59,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:55:59,208 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;@18f07aa8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:55:59,210 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 12:55:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 63 states have internal predecessors, (80), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-10-24 12:55:59,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 12:55:59,226 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:55:59,227 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:59,227 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:55:59,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:55:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash 416696671, now seen corresponding path program 1 times [2024-10-24 12:55:59,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:55:59,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412263308] [2024-10-24 12:55:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:59,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:55:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:59,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:59,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:55:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:59,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:55:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:59,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 12:55:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:59,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 12:55:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:59,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-24 12:55:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:59,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:55:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:59,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:55:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:59,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 12:56:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:00,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 12:56:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:00,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:56:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-24 12:56:00,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:00,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412263308] [2024-10-24 12:56:00,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412263308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:00,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:56:00,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:56:00,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975839199] [2024-10-24 12:56:00,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:00,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 12:56:00,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 12:56:00,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 12:56:00,083 INFO L87 Difference]: Start difference. First operand has 109 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 63 states have internal predecessors, (80), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-24 12:56:00,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:00,323 INFO L93 Difference]: Finished difference Result 216 states and 327 transitions. [2024-10-24 12:56:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 12:56:00,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2024-10-24 12:56:00,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:00,358 INFO L225 Difference]: With dead ends: 216 [2024-10-24 12:56:00,359 INFO L226 Difference]: Without dead ends: 103 [2024-10-24 12:56:00,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 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 12:56:00,370 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:00,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 12:56:00,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-24 12:56:00,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-10-24 12:56:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 58 states have (on average 1.206896551724138) internal successors, (70), 59 states have internal predecessors, (70), 37 states have call successors, (37), 8 states have call predecessors, (37), 7 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-24 12:56:00,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 142 transitions. [2024-10-24 12:56:00,427 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 142 transitions. Word has length 71 [2024-10-24 12:56:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:00,428 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 142 transitions. [2024-10-24 12:56:00,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-24 12:56:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 142 transitions. [2024-10-24 12:56:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 12:56:00,432 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:00,432 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:00,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:56:00,433 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:00,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:00,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1013468090, now seen corresponding path program 1 times [2024-10-24 12:56:00,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:00,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822164326] [2024-10-24 12:56:00,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:00,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 12:56:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 12:56:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-24 12:56:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:56:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:56:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 12:56:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 12:56:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 12:56:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-24 12:56:01,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:01,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822164326] [2024-10-24 12:56:01,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822164326] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:56:01,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087897874] [2024-10-24 12:56:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:01,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:01,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:56:01,280 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 12:56:01,282 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 12:56:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:01,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:56:01,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:56:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-24 12:56:02,010 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:56:02,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087897874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:02,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:56:02,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-10-24 12:56:02,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544335402] [2024-10-24 12:56:02,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:02,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:56:02,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:56:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:56:02,016 INFO L87 Difference]: Start difference. First operand 103 states and 142 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-24 12:56:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:02,484 INFO L93 Difference]: Finished difference Result 193 states and 278 transitions. [2024-10-24 12:56:02,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:56:02,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 73 [2024-10-24 12:56:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:02,487 INFO L225 Difference]: With dead ends: 193 [2024-10-24 12:56:02,487 INFO L226 Difference]: Without dead ends: 105 [2024-10-24 12:56:02,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:56:02,490 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 25 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:02,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 395 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:56:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-10-24 12:56:02,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-10-24 12:56:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 61 states have internal predecessors, (71), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (45), 35 states have call predecessors, (45), 35 states have call successors, (45) [2024-10-24 12:56:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 153 transitions. [2024-10-24 12:56:02,507 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 153 transitions. Word has length 73 [2024-10-24 12:56:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:02,507 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 153 transitions. [2024-10-24 12:56:02,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-24 12:56:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 153 transitions. [2024-10-24 12:56:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 12:56:02,509 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:02,510 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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 12:56:02,529 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 12:56:02,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:02,711 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:02,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2104590783, now seen corresponding path program 1 times [2024-10-24 12:56:02,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:02,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686032009] [2024-10-24 12:56:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:02,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:56:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:56:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:56:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:56:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 12:56:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 12:56:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-24 12:56:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 12:56:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 12:56:03,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:03,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686032009] [2024-10-24 12:56:03,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686032009] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:56:03,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136695814] [2024-10-24 12:56:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:03,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:03,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:56:03,720 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 12:56:03,723 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 12:56:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:04,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 12:56:04,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:56:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-24 12:56:04,315 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:56:04,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136695814] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:04,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:56:04,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-10-24 12:56:04,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691204890] [2024-10-24 12:56:04,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:04,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:56:04,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:04,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:56:04,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:56:04,318 INFO L87 Difference]: Start difference. First operand 105 states and 153 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 12:56:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:04,821 INFO L93 Difference]: Finished difference Result 188 states and 275 transitions. [2024-10-24 12:56:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:56:04,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 75 [2024-10-24 12:56:04,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:04,824 INFO L225 Difference]: With dead ends: 188 [2024-10-24 12:56:04,824 INFO L226 Difference]: Without dead ends: 105 [2024-10-24 12:56:04,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:56:04,826 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 37 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:04,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 389 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:56:04,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-10-24 12:56:04,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-10-24 12:56:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 61 states have internal predecessors, (71), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (43), 35 states have call predecessors, (43), 35 states have call successors, (43) [2024-10-24 12:56:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 151 transitions. [2024-10-24 12:56:04,839 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 151 transitions. Word has length 75 [2024-10-24 12:56:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:04,840 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 151 transitions. [2024-10-24 12:56:04,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 12:56:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 151 transitions. [2024-10-24 12:56:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 12:56:04,841 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:04,842 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:56:04,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 12:56:05,042 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,SelfDestructingSolverStorable2 [2024-10-24 12:56:05,043 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:05,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:05,043 INFO L85 PathProgramCache]: Analyzing trace with hash -12124826, now seen corresponding path program 2 times [2024-10-24 12:56:05,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:05,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65975354] [2024-10-24 12:56:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:05,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:05,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:05,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:05,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:05,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:56:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:05,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:56:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:05,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 12:56:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:05,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:56:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:05,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:56:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:05,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 12:56:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:05,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 12:56:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:05,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:56:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 12:56:06,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:06,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65975354] [2024-10-24 12:56:06,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65975354] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:56:06,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8506191] [2024-10-24 12:56:06,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:56:06,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:06,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:56:06,004 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 12:56:06,005 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 12:56:06,614 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:56:06,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:56:06,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 12:56:06,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:56:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-10-24 12:56:06,770 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:56:06,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8506191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:06,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:56:06,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-24 12:56:06,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871587862] [2024-10-24 12:56:06,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:06,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:56:06,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:56:06,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:56:06,774 INFO L87 Difference]: Start difference. First operand 105 states and 151 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 12:56:07,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:07,453 INFO L93 Difference]: Finished difference Result 181 states and 261 transitions. [2024-10-24 12:56:07,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:56:07,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 77 [2024-10-24 12:56:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:07,455 INFO L225 Difference]: With dead ends: 181 [2024-10-24 12:56:07,456 INFO L226 Difference]: Without dead ends: 105 [2024-10-24 12:56:07,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-10-24 12:56:07,457 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 51 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:07,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 588 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 12:56:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-10-24 12:56:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-10-24 12:56:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 61 states have internal predecessors, (71), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2024-10-24 12:56:07,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 149 transitions. [2024-10-24 12:56:07,474 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 149 transitions. Word has length 77 [2024-10-24 12:56:07,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:07,475 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 149 transitions. [2024-10-24 12:56:07,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 12:56:07,475 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 149 transitions. [2024-10-24 12:56:07,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 12:56:07,476 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:07,477 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:07,499 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 12:56:07,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:07,678 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:07,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:07,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2027068828, now seen corresponding path program 1 times [2024-10-24 12:56:07,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:07,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19466875] [2024-10-24 12:56:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:07,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:56:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:56:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 12:56:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:56:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:56:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 12:56:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 12:56:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 12:56:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-10-24 12:56:08,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:08,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19466875] [2024-10-24 12:56:08,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19466875] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:08,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:56:08,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:56:08,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479718323] [2024-10-24 12:56:08,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:08,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:56:08,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:08,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:56:08,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:56:08,746 INFO L87 Difference]: Start difference. First operand 105 states and 149 transitions. Second operand has 8 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-10-24 12:56:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:09,537 INFO L93 Difference]: Finished difference Result 116 states and 171 transitions. [2024-10-24 12:56:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:56:09,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 81 [2024-10-24 12:56:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:09,539 INFO L225 Difference]: With dead ends: 116 [2024-10-24 12:56:09,539 INFO L226 Difference]: Without dead ends: 114 [2024-10-24 12:56:09,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:56:09,540 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 3 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:09,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 922 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 12:56:09,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-24 12:56:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2024-10-24 12:56:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 64 states have (on average 1.1875) internal successors, (76), 67 states have internal predecessors, (76), 38 states have call successors, (38), 9 states have call predecessors, (38), 10 states have return successors, (54), 36 states have call predecessors, (54), 36 states have call successors, (54) [2024-10-24 12:56:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 168 transitions. [2024-10-24 12:56:09,565 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 168 transitions. Word has length 81 [2024-10-24 12:56:09,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:09,566 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 168 transitions. [2024-10-24 12:56:09,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-10-24 12:56:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 168 transitions. [2024-10-24 12:56:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-24 12:56:09,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:09,568 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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] [2024-10-24 12:56:09,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:56:09,568 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:09,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:09,568 INFO L85 PathProgramCache]: Analyzing trace with hash -777195180, now seen corresponding path program 1 times [2024-10-24 12:56:09,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:09,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879294573] [2024-10-24 12:56:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:09,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:56:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:56:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 12:56:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:56:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:56:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 12:56:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 12:56:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 12:56:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-24 12:56:10,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:10,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879294573] [2024-10-24 12:56:10,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879294573] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:10,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:56:10,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 12:56:10,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679349368] [2024-10-24 12:56:10,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:10,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:56:10,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:10,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:56:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:56:10,726 INFO L87 Difference]: Start difference. First operand 113 states and 168 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-24 12:56:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:11,708 INFO L93 Difference]: Finished difference Result 207 states and 330 transitions. [2024-10-24 12:56:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:56:11,709 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 85 [2024-10-24 12:56:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:11,713 INFO L225 Difference]: With dead ends: 207 [2024-10-24 12:56:11,713 INFO L226 Difference]: Without dead ends: 138 [2024-10-24 12:56:11,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:56:11,717 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 31 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:11,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 500 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 12:56:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-10-24 12:56:11,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 120. [2024-10-24 12:56:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 72 states have internal predecessors, (82), 41 states have call successors, (41), 9 states have call predecessors, (41), 10 states have return successors, (58), 38 states have call predecessors, (58), 39 states have call successors, (58) [2024-10-24 12:56:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 181 transitions. [2024-10-24 12:56:11,747 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 181 transitions. Word has length 85 [2024-10-24 12:56:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:11,749 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 181 transitions. [2024-10-24 12:56:11,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-24 12:56:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 181 transitions. [2024-10-24 12:56:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-24 12:56:11,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:11,752 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:56:11,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:56:11,752 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:11,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1180126405, now seen corresponding path program 1 times [2024-10-24 12:56:11,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:11,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452568597] [2024-10-24 12:56:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:11,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:11,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:11,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:11,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:11,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:56:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:11,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:56:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:11,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 12:56:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:11,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:56:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:11,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:56:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:11,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 12:56:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:11,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 12:56:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:11,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 12:56:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-24 12:56:12,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:12,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452568597] [2024-10-24 12:56:12,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452568597] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:12,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:56:12,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:56:12,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292651868] [2024-10-24 12:56:12,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:12,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:56:12,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:12,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:56:12,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:56:12,009 INFO L87 Difference]: Start difference. First operand 120 states and 181 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-24 12:56:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:12,266 INFO L93 Difference]: Finished difference Result 201 states and 302 transitions. [2024-10-24 12:56:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:56:12,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 88 [2024-10-24 12:56:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:12,268 INFO L225 Difference]: With dead ends: 201 [2024-10-24 12:56:12,268 INFO L226 Difference]: Without dead ends: 121 [2024-10-24 12:56:12,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:56:12,271 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:12,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 257 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 12:56:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-24 12:56:12,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-10-24 12:56:12,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 73 states have internal predecessors, (82), 41 states have call successors, (41), 9 states have call predecessors, (41), 10 states have return successors, (58), 38 states have call predecessors, (58), 39 states have call successors, (58) [2024-10-24 12:56:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 181 transitions. [2024-10-24 12:56:12,291 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 181 transitions. Word has length 88 [2024-10-24 12:56:12,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:12,291 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 181 transitions. [2024-10-24 12:56:12,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-24 12:56:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 181 transitions. [2024-10-24 12:56:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 12:56:12,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:12,293 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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] [2024-10-24 12:56:12,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:56:12,293 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:12,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:12,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1593180197, now seen corresponding path program 1 times [2024-10-24 12:56:12,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:12,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280982026] [2024-10-24 12:56:12,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:12,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:56:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:56:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 12:56:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:56:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:56:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 12:56:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 12:56:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 12:56:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:56:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-24 12:56:13,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:13,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280982026] [2024-10-24 12:56:13,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280982026] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:56:13,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650186434] [2024-10-24 12:56:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:13,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:13,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:56:13,335 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:56:13,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:56:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:13,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 2566 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-24 12:56:13,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:56:14,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 12:56:17,536 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-10-24 12:56:17,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 27 [2024-10-24 12:56:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-24 12:56:17,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:56:17,896 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-24 12:56:17,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650186434] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:56:17,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:56:17,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 11] total 21 [2024-10-24 12:56:17,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015664065] [2024-10-24 12:56:17,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:56:17,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 12:56:17,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:17,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 12:56:17,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-10-24 12:56:17,899 INFO L87 Difference]: Start difference. First operand 121 states and 181 transitions. Second operand has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 19 states have internal predecessors, (80), 10 states have call successors, (33), 5 states have call predecessors, (33), 4 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-10-24 12:56:22,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:22,837 INFO L93 Difference]: Finished difference Result 436 states and 706 transitions. [2024-10-24 12:56:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-24 12:56:22,838 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 19 states have internal predecessors, (80), 10 states have call successors, (33), 5 states have call predecessors, (33), 4 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) Word has length 89 [2024-10-24 12:56:22,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:22,845 INFO L225 Difference]: With dead ends: 436 [2024-10-24 12:56:22,845 INFO L226 Difference]: Without dead ends: 335 [2024-10-24 12:56:22,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 178 SyntacticMatches, 17 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=269, Invalid=1711, Unknown=0, NotChecked=0, Total=1980 [2024-10-24 12:56:22,847 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 307 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:22,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 954 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-10-24 12:56:22,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-10-24 12:56:22,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 275. [2024-10-24 12:56:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 156 states have (on average 1.1602564102564104) internal successors, (181), 161 states have internal predecessors, (181), 97 states have call successors, (97), 19 states have call predecessors, (97), 21 states have return successors, (134), 94 states have call predecessors, (134), 93 states have call successors, (134) [2024-10-24 12:56:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 412 transitions. [2024-10-24 12:56:22,899 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 412 transitions. Word has length 89 [2024-10-24 12:56:22,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:22,900 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 412 transitions. [2024-10-24 12:56:22,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 19 states have internal predecessors, (80), 10 states have call successors, (33), 5 states have call predecessors, (33), 4 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-10-24 12:56:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 412 transitions. [2024-10-24 12:56:22,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 12:56:22,902 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:22,902 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:56:22,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 12:56:23,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:23,103 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:23,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash 481923228, now seen corresponding path program 1 times [2024-10-24 12:56:23,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:23,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413487336] [2024-10-24 12:56:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:23,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:56:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:56:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 12:56:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:56:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:56:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 12:56:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 12:56:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 12:56:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 12:56:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 12:56:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-24 12:56:23,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:23,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413487336] [2024-10-24 12:56:23,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413487336] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:23,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:56:23,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:56:23,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014293596] [2024-10-24 12:56:23,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:23,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:56:23,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:23,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:56:23,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:56:23,515 INFO L87 Difference]: Start difference. First operand 275 states and 412 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-24 12:56:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:24,136 INFO L93 Difference]: Finished difference Result 434 states and 651 transitions. [2024-10-24 12:56:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:56:24,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2024-10-24 12:56:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:24,139 INFO L225 Difference]: With dead ends: 434 [2024-10-24 12:56:24,139 INFO L226 Difference]: Without dead ends: 273 [2024-10-24 12:56:24,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:56:24,141 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 3 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:24,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 451 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 12:56:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-10-24 12:56:24,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2024-10-24 12:56:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 155 states have (on average 1.1548387096774193) internal successors, (179), 159 states have internal predecessors, (179), 97 states have call successors, (97), 19 states have call predecessors, (97), 20 states have return successors, (129), 94 states have call predecessors, (129), 93 states have call successors, (129) [2024-10-24 12:56:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 405 transitions. [2024-10-24 12:56:24,178 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 405 transitions. Word has length 92 [2024-10-24 12:56:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:24,178 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 405 transitions. [2024-10-24 12:56:24,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-24 12:56:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 405 transitions. [2024-10-24 12:56:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-24 12:56:24,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:24,182 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 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] [2024-10-24 12:56:24,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:56:24,182 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:24,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash 345939095, now seen corresponding path program 1 times [2024-10-24 12:56:24,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:24,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119702615] [2024-10-24 12:56:24,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:24,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:56:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:56:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 12:56:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:56:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:56:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 12:56:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 12:56:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 12:56:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 12:56:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:24,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 12:56:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-10-24 12:56:25,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:25,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119702615] [2024-10-24 12:56:25,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119702615] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:25,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:56:25,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:56:25,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901784419] [2024-10-24 12:56:25,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:25,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:56:25,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:25,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:56:25,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:56:25,054 INFO L87 Difference]: Start difference. First operand 273 states and 405 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-10-24 12:56:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:26,233 INFO L93 Difference]: Finished difference Result 285 states and 417 transitions. [2024-10-24 12:56:26,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:56:26,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2024-10-24 12:56:26,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:26,236 INFO L225 Difference]: With dead ends: 285 [2024-10-24 12:56:26,236 INFO L226 Difference]: Without dead ends: 283 [2024-10-24 12:56:26,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:56:26,237 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 3 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:26,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 932 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 12:56:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-10-24 12:56:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2024-10-24 12:56:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 161 states have (on average 1.1490683229813665) internal successors, (185), 165 states have internal predecessors, (185), 98 states have call successors, (98), 21 states have call predecessors, (98), 22 states have return successors, (130), 95 states have call predecessors, (130), 94 states have call successors, (130) [2024-10-24 12:56:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 413 transitions. [2024-10-24 12:56:26,266 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 413 transitions. Word has length 94 [2024-10-24 12:56:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:26,266 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 413 transitions. [2024-10-24 12:56:26,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-10-24 12:56:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 413 transitions. [2024-10-24 12:56:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-24 12:56:26,268 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:26,268 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:26,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 12:56:26,268 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:26,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:26,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1142181027, now seen corresponding path program 1 times [2024-10-24 12:56:26,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:26,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689597033] [2024-10-24 12:56:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:26,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 12:56:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 12:56:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 12:56:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:56:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:56:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 12:56:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 12:56:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-24 12:56:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 12:56:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-10-24 12:56:27,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:27,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689597033] [2024-10-24 12:56:27,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689597033] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:56:27,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821606310] [2024-10-24 12:56:27,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:27,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:27,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:56:27,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:56:27,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 12:56:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:27,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 12:56:27,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:56:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-24 12:56:27,944 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:56:27,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821606310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:27,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:56:27,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 11 [2024-10-24 12:56:27,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512900016] [2024-10-24 12:56:27,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:27,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:56:27,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:56:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:56:27,946 INFO L87 Difference]: Start difference. First operand 282 states and 413 transitions. Second operand has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 12:56:28,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:28,921 INFO L93 Difference]: Finished difference Result 529 states and 793 transitions. [2024-10-24 12:56:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:56:28,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2024-10-24 12:56:28,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:28,924 INFO L225 Difference]: With dead ends: 529 [2024-10-24 12:56:28,924 INFO L226 Difference]: Without dead ends: 290 [2024-10-24 12:56:28,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:56:28,926 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:28,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 985 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 12:56:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-10-24 12:56:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 286. [2024-10-24 12:56:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 164 states have (on average 1.146341463414634) internal successors, (188), 169 states have internal predecessors, (188), 98 states have call successors, (98), 21 states have call predecessors, (98), 23 states have return successors, (141), 95 states have call predecessors, (141), 94 states have call successors, (141) [2024-10-24 12:56:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 427 transitions. [2024-10-24 12:56:28,959 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 427 transitions. Word has length 101 [2024-10-24 12:56:28,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:28,959 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 427 transitions. [2024-10-24 12:56:28,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 12:56:28,960 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 427 transitions. [2024-10-24 12:56:28,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-24 12:56:28,961 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:28,961 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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] [2024-10-24 12:56:28,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 12:56:29,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-24 12:56:29,162 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:29,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:29,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1065349494, now seen corresponding path program 1 times [2024-10-24 12:56:29,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:29,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760165814] [2024-10-24 12:56:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:29,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 12:56:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:56:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:56:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:56:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 12:56:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 12:56:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 12:56:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 12:56:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 12:56:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-10-24 12:56:30,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:30,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760165814] [2024-10-24 12:56:30,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760165814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:56:30,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703314987] [2024-10-24 12:56:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:30,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:30,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:56:30,232 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:56:30,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 12:56:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:30,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-10-24 12:56:30,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:56:30,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 12:56:30,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 12:56:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 12:56:31,188 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:56:31,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703314987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:31,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:56:31,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2024-10-24 12:56:31,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973296726] [2024-10-24 12:56:31,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:31,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:56:31,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:31,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:56:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-10-24 12:56:31,191 INFO L87 Difference]: Start difference. First operand 286 states and 427 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 12:56:34,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:34,228 INFO L93 Difference]: Finished difference Result 837 states and 1303 transitions. [2024-10-24 12:56:34,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:56:34,229 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2024-10-24 12:56:34,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:34,233 INFO L225 Difference]: With dead ends: 837 [2024-10-24 12:56:34,233 INFO L226 Difference]: Without dead ends: 594 [2024-10-24 12:56:34,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-10-24 12:56:34,236 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 128 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:34,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 743 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-24 12:56:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-10-24 12:56:34,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 558. [2024-10-24 12:56:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 321 states have (on average 1.1495327102803738) internal successors, (369), 331 states have internal predecessors, (369), 192 states have call successors, (192), 40 states have call predecessors, (192), 44 states have return successors, (279), 186 states have call predecessors, (279), 184 states have call successors, (279) [2024-10-24 12:56:34,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 840 transitions. [2024-10-24 12:56:34,306 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 840 transitions. Word has length 103 [2024-10-24 12:56:34,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:34,306 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 840 transitions. [2024-10-24 12:56:34,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 12:56:34,307 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 840 transitions. [2024-10-24 12:56:34,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-24 12:56:34,309 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:34,309 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2024-10-24 12:56:34,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 12:56:34,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:34,510 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:34,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash 479073272, now seen corresponding path program 1 times [2024-10-24 12:56:34,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:34,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558621] [2024-10-24 12:56:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:34,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:56:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 12:56:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:56:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:56:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:56:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 12:56:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 12:56:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 12:56:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 12:56:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 12:56:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-10-24 12:56:34,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:34,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558621] [2024-10-24 12:56:34,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558621] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:56:34,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837407808] [2024-10-24 12:56:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:34,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:34,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:56:34,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:56:34,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 12:56:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:35,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 12:56:35,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:56:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-24 12:56:35,291 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:56:35,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837407808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:35,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:56:35,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-10-24 12:56:35,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436777905] [2024-10-24 12:56:35,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:35,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:56:35,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:35,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:56:35,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:56:35,295 INFO L87 Difference]: Start difference. First operand 558 states and 840 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 12:56:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:56:35,736 INFO L93 Difference]: Finished difference Result 905 states and 1371 transitions. [2024-10-24 12:56:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:56:35,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2024-10-24 12:56:35,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:56:35,740 INFO L225 Difference]: With dead ends: 905 [2024-10-24 12:56:35,740 INFO L226 Difference]: Without dead ends: 406 [2024-10-24 12:56:35,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 129 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 12:56:35,744 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:56:35,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:56:35,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-10-24 12:56:35,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 404. [2024-10-24 12:56:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 239 states have (on average 1.1380753138075315) internal successors, (272), 246 states have internal predecessors, (272), 130 states have call successors, (130), 32 states have call predecessors, (130), 34 states have return successors, (182), 125 states have call predecessors, (182), 124 states have call successors, (182) [2024-10-24 12:56:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 584 transitions. [2024-10-24 12:56:35,786 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 584 transitions. Word has length 103 [2024-10-24 12:56:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:56:35,787 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 584 transitions. [2024-10-24 12:56:35,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 12:56:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 584 transitions. [2024-10-24 12:56:35,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-24 12:56:35,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:56:35,789 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2024-10-24 12:56:35,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 12:56:35,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:35,990 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:56:35,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:56:35,990 INFO L85 PathProgramCache]: Analyzing trace with hash -811624395, now seen corresponding path program 1 times [2024-10-24 12:56:35,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:56:35,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354511038] [2024-10-24 12:56:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:35,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:56:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:36,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:36,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:56:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:36,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 12:56:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:36,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:56:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:36,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:56:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:36,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:56:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:36,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 12:56:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:36,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 12:56:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:37,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:56:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:37,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:56:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:37,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 12:56:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:37,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 12:56:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:37,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-24 12:56:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:37,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 12:56:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-10-24 12:56:37,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:56:37,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354511038] [2024-10-24 12:56:37,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354511038] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:56:37,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407125292] [2024-10-24 12:56:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:56:37,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:56:37,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:56:37,055 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:56:37,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 12:56:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:56:37,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 2648 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-24 12:56:37,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:56:37,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 12:56:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-10-24 12:56:38,572 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:56:38,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407125292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:56:38,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:56:38,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [10] total 23 [2024-10-24 12:56:38,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196503463] [2024-10-24 12:56:38,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:56:38,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 12:56:38,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:56:38,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 12:56:38,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2024-10-24 12:56:38,574 INFO L87 Difference]: Start difference. First operand 404 states and 584 transitions. Second operand has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2024-10-24 12:56:43,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:56:47,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:56:51,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:56:55,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:56:59,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:57:04,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:57:08,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:57:12,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]