./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_buf_write_be16_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_buf_write_be16_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 1e1b2479546ce911ed527b938020405849e60d55228e9e448b0bdaf9e8ba6509 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:49:39,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:49:39,458 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 12:49:39,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:49:39,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:49:39,486 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:49:39,487 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:49:39,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:49:39,488 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:49:39,488 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:49:39,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:49:39,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:49:39,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:49:39,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:49:39,490 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:49:39,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:49:39,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:49:39,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:49:39,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:49:39,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:49:39,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:49:39,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:49:39,494 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:49:39,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:49:39,494 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:49:39,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:49:39,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:49:39,495 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:49:39,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:49:39,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:49:39,496 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:49:39,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:49:39,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:49:39,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:49:39,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:49:39,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:49:39,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:49:39,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:49:39,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:49:39,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e1b2479546ce911ed527b938020405849e60d55228e9e448b0bdaf9e8ba6509 [2024-10-24 12:49:39,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:49:39,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:49:39,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:49:39,765 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:49:39,765 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:49:39,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2024-10-24 12:49:41,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:49:41,625 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:49:41,626 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2024-10-24 12:49:41,667 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f94257c1/61f26c5224824d84a9ab03b2d97603cd/FLAGbeac2cdc1 [2024-10-24 12:49:41,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f94257c1/61f26c5224824d84a9ab03b2d97603cd [2024-10-24 12:49:41,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:49:41,740 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:49:41,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:49:41,742 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:49:41,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:49:41,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:49:41" (1/1) ... [2024-10-24 12:49:41,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1492c9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:41, skipping insertion in model container [2024-10-24 12:49:41,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:49:41" (1/1) ... [2024-10-24 12:49:41,856 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:49:42,123 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_buf_write_be16_harness.i[4497,4510] [2024-10-24 12:49:42,131 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_buf_write_be16_harness.i[4557,4570] [2024-10-24 12:49:43,188 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,188 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,189 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,189 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,190 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,201 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,201 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,203 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,203 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,747 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,752 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:49:43,853 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:49:43,868 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_buf_write_be16_harness.i[4497,4510] [2024-10-24 12:49:43,869 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_buf_write_be16_harness.i[4557,4570] [2024-10-24 12:49:43,904 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,907 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,908 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,908 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,909 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,913 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,918 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,919 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:43,919 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:44,033 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2024-10-24 12:49:44,035 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:44,035 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:49:44,044 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2024-10-24 12:49:44,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:49:44,290 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:49:44,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44 WrapperNode [2024-10-24 12:49:44,291 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:49:44,292 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:49:44,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:49:44,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:49:44,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,495 INFO L138 Inliner]: procedures = 680, calls = 2606, calls flagged for inlining = 63, calls inlined = 11, statements flattened = 879 [2024-10-24 12:49:44,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:49:44,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:49:44,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:49:44,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:49:44,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,651 INFO L175 MemorySlicer]: Split 559 memory accesses to 7 slices as follows [2, 256, 236, 8, 4, 6, 47]. 46 percent of accesses are in the largest equivalence class. The 507 initializations are split as follows [2, 256, 236, 5, 0, 0, 8]. The 8 writes are split as follows [0, 0, 0, 1, 2, 2, 3]. [2024-10-24 12:49:44,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:49:44,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:49:44,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:49:44,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:49:44,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (1/1) ... [2024-10-24 12:49:44,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:49:44,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:49:44,786 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 12:49:44,790 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 12:49:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-10-24 12:49:44,831 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-10-24 12:49:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:49:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-10-24 12:49:44,831 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-10-24 12:49:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:49:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:49:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:49:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:49:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 12:49:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 12:49:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-24 12:49:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 12:49:44,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 12:49:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:49:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:49:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 12:49:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 12:49:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 12:49:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 12:49:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-24 12:49:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-24 12:49:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-24 12:49:44,834 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-10-24 12:49:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-10-24 12:49:44,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:49:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:49:44,834 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-10-24 12:49:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-10-24 12:49:44,834 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-10-24 12:49:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-10-24 12:49:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 12:49:44,835 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 12:49:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-10-24 12:49:44,835 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-10-24 12:49:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:49:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 12:49:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 12:49:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 12:49:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 12:49:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-24 12:49:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-24 12:49:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-24 12:49:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2024-10-24 12:49:44,836 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2024-10-24 12:49:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-24 12:49:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-24 12:49:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-24 12:49:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-24 12:49:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-10-24 12:49:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-10-24 12:49:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-10-24 12:49:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-10-24 12:49:44,837 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-10-24 12:49:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:49:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:49:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:49:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:49:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 12:49:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 12:49:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-24 12:49:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:49:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:49:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:49:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:49:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 12:49:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 12:49:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-24 12:49:45,128 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:49:45,130 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:49:46,006 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-10-24 12:49:46,006 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:49:46,226 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:49:46,228 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 12:49:46,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:49:46 BoogieIcfgContainer [2024-10-24 12:49:46,229 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:49:46,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:49:46,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:49:46,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:49:46,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:49:41" (1/3) ... [2024-10-24 12:49:46,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5231ab7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:49:46, skipping insertion in model container [2024-10-24 12:49:46,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:44" (2/3) ... [2024-10-24 12:49:46,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5231ab7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:49:46, skipping insertion in model container [2024-10-24 12:49:46,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:49:46" (3/3) ... [2024-10-24 12:49:46,239 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be16_harness.i [2024-10-24 12:49:46,255 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:49:46,255 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:49:46,326 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:49:46,335 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;@4a91bec2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:49:46,336 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 12:49:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-24 12:49:46,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 12:49:46,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:46,354 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, 1, 1, 1] [2024-10-24 12:49:46,355 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:46,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:46,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1404115696, now seen corresponding path program 1 times [2024-10-24 12:49:46,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:46,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502851419] [2024-10-24 12:49:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:46,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:46,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:49:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:47,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:49:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:47,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:47,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:49:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:47,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:49:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:47,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:49:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:47,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:49:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:47,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:49:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:47,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 12:49:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:47,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 12:49:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:47,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 12:49:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:47,141 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 12:49:47,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:47,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502851419] [2024-10-24 12:49:47,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502851419] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:47,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:47,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:49:47,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797342539] [2024-10-24 12:49:47,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:47,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:49:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:47,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:49:47,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:49:47,181 INFO L87 Difference]: Start difference. First operand has 116 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 12:49:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:47,725 INFO L93 Difference]: Finished difference Result 230 states and 339 transitions. [2024-10-24 12:49:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:49:47,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 76 [2024-10-24 12:49:47,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:47,735 INFO L225 Difference]: With dead ends: 230 [2024-10-24 12:49:47,736 INFO L226 Difference]: Without dead ends: 114 [2024-10-24 12:49:47,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 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 12:49:47,743 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 69 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:47,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 89 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:49:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-24 12:49:47,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-10-24 12:49:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 70 states have internal predecessors, (86), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-24 12:49:47,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2024-10-24 12:49:47,797 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 76 [2024-10-24 12:49:47,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:47,798 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2024-10-24 12:49:47,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 12:49:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2024-10-24 12:49:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 12:49:47,803 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:47,803 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, 1, 1, 1] [2024-10-24 12:49:47,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:49:47,804 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:47,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2022366740, now seen corresponding path program 1 times [2024-10-24 12:49:47,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:47,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886122680] [2024-10-24 12:49:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:47,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:49:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:49:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:49:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:49:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:49:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:49:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:49:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 12:49:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 12:49:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 12:49:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:48,663 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 12:49:48,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:48,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886122680] [2024-10-24 12:49:48,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886122680] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:49:48,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385934120] [2024-10-24 12:49:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:48,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:49:48,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:49:48,666 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 12:49:48,668 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 12:49:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:49,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:49:49,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:49:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 12:49:49,430 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:49:49,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385934120] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:49,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:49:49,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-10-24 12:49:49,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804133529] [2024-10-24 12:49:49,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:49,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:49:49,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:49,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:49:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:49:49,435 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 12:49:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:49,817 INFO L93 Difference]: Finished difference Result 211 states and 290 transitions. [2024-10-24 12:49:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:49:49,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 76 [2024-10-24 12:49:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:49,822 INFO L225 Difference]: With dead ends: 211 [2024-10-24 12:49:49,823 INFO L226 Difference]: Without dead ends: 116 [2024-10-24 12:49:49,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:49:49,828 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 24 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:49,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 341 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:49:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-24 12:49:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-10-24 12:49:49,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2024-10-24 12:49:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 158 transitions. [2024-10-24 12:49:49,857 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 158 transitions. Word has length 76 [2024-10-24 12:49:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:49,858 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 158 transitions. [2024-10-24 12:49:49,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 12:49:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 158 transitions. [2024-10-24 12:49:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-24 12:49:49,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:49,861 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:49:49,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 12:49:50,065 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 12:49:50,066 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:50,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:50,066 INFO L85 PathProgramCache]: Analyzing trace with hash -281504513, now seen corresponding path program 1 times [2024-10-24 12:49:50,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:50,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776121889] [2024-10-24 12:49:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:50,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:50,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:50,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:49:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:50,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:49:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:50,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:50,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:49:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:51,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:49:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:51,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:49:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:51,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 12:49:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:51,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 12:49:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:51,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 12:49:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:51,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 12:49:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:51,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 12:49:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:51,143 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 12:49:51,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:51,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776121889] [2024-10-24 12:49:51,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776121889] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:49:51,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700485318] [2024-10-24 12:49:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:51,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:49:51,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:49:51,147 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 12:49:51,149 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 12:49:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:51,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 12:49:51,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:49:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-24 12:49:51,857 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:49:51,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700485318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:51,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:49:51,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-10-24 12:49:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601849477] [2024-10-24 12:49:51,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:51,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:49:51,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:51,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:49:51,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:49:51,859 INFO L87 Difference]: Start difference. First operand 116 states and 158 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 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 12:49:52,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:52,281 INFO L93 Difference]: Finished difference Result 206 states and 281 transitions. [2024-10-24 12:49:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:49:52,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 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 82 [2024-10-24 12:49:52,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:52,283 INFO L225 Difference]: With dead ends: 206 [2024-10-24 12:49:52,283 INFO L226 Difference]: Without dead ends: 116 [2024-10-24 12:49:52,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-24 12:49:52,285 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 23 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:52,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 469 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:49:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-24 12:49:52,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-10-24 12:49:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-24 12:49:52,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2024-10-24 12:49:52,296 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 82 [2024-10-24 12:49:52,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:52,296 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2024-10-24 12:49:52,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 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 12:49:52,297 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2024-10-24 12:49:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-24 12:49:52,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:52,298 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:49:52,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:49:52,499 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 12:49:52,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:52,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:52,500 INFO L85 PathProgramCache]: Analyzing trace with hash 438421812, now seen corresponding path program 2 times [2024-10-24 12:49:52,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:52,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303347754] [2024-10-24 12:49:52,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:52,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:49:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:49:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:49:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:49:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:49:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 12:49:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:49:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 12:49:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 12:49:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 12:49:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 12:49:53,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:53,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303347754] [2024-10-24 12:49:53,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303347754] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:49:53,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009585190] [2024-10-24 12:49:53,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:49:53,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:49:53,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:49:53,524 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 12:49:53,525 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 12:49:54,031 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:49:54,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:49:54,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 2622 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 12:49:54,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:49:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-24 12:49:54,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:49:54,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009585190] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:54,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:49:54,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2024-10-24 12:49:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899227974] [2024-10-24 12:49:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:54,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:49:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:54,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:49:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-10-24 12:49:54,217 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 12:49:54,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:54,800 INFO L93 Difference]: Finished difference Result 201 states and 272 transitions. [2024-10-24 12:49:54,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:49:54,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 88 [2024-10-24 12:49:54,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:54,802 INFO L225 Difference]: With dead ends: 201 [2024-10-24 12:49:54,803 INFO L226 Difference]: Without dead ends: 114 [2024-10-24 12:49:54,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-10-24 12:49:54,804 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 39 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:54,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 801 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:49:54,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-24 12:49:54,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-10-24 12:49:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 70 states have internal predecessors, (85), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-24 12:49:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 152 transitions. [2024-10-24 12:49:54,815 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 152 transitions. Word has length 88 [2024-10-24 12:49:54,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:54,816 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 152 transitions. [2024-10-24 12:49:54,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 12:49:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 152 transitions. [2024-10-24 12:49:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-24 12:49:54,817 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:54,818 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] [2024-10-24 12:49:54,840 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 12:49:55,021 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 12:49:55,022 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:55,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1355545452, now seen corresponding path program 1 times [2024-10-24 12:49:55,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:55,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594072328] [2024-10-24 12:49:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:49:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:49:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:49:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:49:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:49:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 12:49:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:49:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 12:49:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 12:49:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 12:49:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-24 12:49:56,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:56,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594072328] [2024-10-24 12:49:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594072328] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:56,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:56,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 12:49:56,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252561488] [2024-10-24 12:49:56,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:56,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:49:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:49:56,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:49:56,214 INFO L87 Difference]: Start difference. First operand 114 states and 152 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-24 12:49:57,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:57,514 INFO L93 Difference]: Finished difference Result 125 states and 168 transitions. [2024-10-24 12:49:57,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:49:57,515 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100 [2024-10-24 12:49:57,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:57,517 INFO L225 Difference]: With dead ends: 125 [2024-10-24 12:49:57,517 INFO L226 Difference]: Without dead ends: 123 [2024-10-24 12:49:57,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-10-24 12:49:57,518 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 77 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:57,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 362 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 12:49:57,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-24 12:49:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2024-10-24 12:49:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 76 states have internal predecessors, (90), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2024-10-24 12:49:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 165 transitions. [2024-10-24 12:49:57,529 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 165 transitions. Word has length 100 [2024-10-24 12:49:57,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:57,530 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 165 transitions. [2024-10-24 12:49:57,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-24 12:49:57,530 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 165 transitions. [2024-10-24 12:49:57,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 12:49:57,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:57,532 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, 1] [2024-10-24 12:49:57,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:49:57,532 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:57,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:57,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1549878260, now seen corresponding path program 1 times [2024-10-24 12:49:57,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60009773] [2024-10-24 12:49:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:49:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:49:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:49:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:49:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:49:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 12:49:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:49:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 12:49:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 12:49:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 12:49:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-24 12:49:58,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:58,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60009773] [2024-10-24 12:49:58,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60009773] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:58,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:58,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:49:58,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565597290] [2024-10-24 12:49:58,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:58,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:49:58,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:58,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:49:58,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:49:58,541 INFO L87 Difference]: Start difference. First operand 122 states and 165 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-24 12:49:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:59,250 INFO L93 Difference]: Finished difference Result 242 states and 345 transitions. [2024-10-24 12:49:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:49:59,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2024-10-24 12:49:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:59,253 INFO L225 Difference]: With dead ends: 242 [2024-10-24 12:49:59,253 INFO L226 Difference]: Without dead ends: 139 [2024-10-24 12:49:59,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:49:59,254 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 109 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:59,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 175 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 12:49:59,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-24 12:49:59,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 127. [2024-10-24 12:49:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 81 states have internal predecessors, (97), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2024-10-24 12:49:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 172 transitions. [2024-10-24 12:49:59,278 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 172 transitions. Word has length 104 [2024-10-24 12:49:59,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:59,280 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 172 transitions. [2024-10-24 12:49:59,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-24 12:49:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 172 transitions. [2024-10-24 12:49:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 12:49:59,281 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:59,281 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, 1] [2024-10-24 12:49:59,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:49:59,282 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:59,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:59,282 INFO L85 PathProgramCache]: Analyzing trace with hash -848813682, now seen corresponding path program 1 times [2024-10-24 12:49:59,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:59,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477011482] [2024-10-24 12:49:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:59,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:50:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:50:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:50:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:50:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:50:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 12:50:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:50:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 12:50:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 12:50:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 12:50:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-10-24 12:50:00,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:00,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477011482] [2024-10-24 12:50:00,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477011482] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:00,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941809982] [2024-10-24 12:50:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:00,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:00,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:00,776 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 12:50:00,778 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 12:50:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:01,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-10-24 12:50:01,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:01,468 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 8 treesize of output 1 [2024-10-24 12:50:01,471 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 12:50:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 59 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 12:50:03,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:50:04,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-10-24 12:50:04,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-10-24 12:50:04,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2024-10-24 12:50:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-24 12:50:04,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941809982] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:50:04,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:50:04,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 18] total 42 [2024-10-24 12:50:04,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066091899] [2024-10-24 12:50:04,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:50:04,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-24 12:50:04,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-24 12:50:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2024-10-24 12:50:04,399 INFO L87 Difference]: Start difference. First operand 127 states and 172 transitions. Second operand has 42 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 36 states have internal predecessors, (127), 13 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (30), 11 states have call predecessors, (30), 13 states have call successors, (30) [2024-10-24 12:50:13,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:13,115 INFO L93 Difference]: Finished difference Result 607 states and 844 transitions. [2024-10-24 12:50:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-10-24 12:50:13,116 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 36 states have internal predecessors, (127), 13 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (30), 11 states have call predecessors, (30), 13 states have call successors, (30) Word has length 104 [2024-10-24 12:50:13,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:13,128 INFO L225 Difference]: With dead ends: 607 [2024-10-24 12:50:13,128 INFO L226 Difference]: Without dead ends: 491 [2024-10-24 12:50:13,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 216 SyntacticMatches, 12 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 3664 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1542, Invalid=10230, Unknown=0, NotChecked=0, Total=11772 [2024-10-24 12:50:13,133 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 897 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 4276 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 4705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 4276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:13,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 699 Invalid, 4705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 4276 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-10-24 12:50:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-10-24 12:50:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 392. [2024-10-24 12:50:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 279 states have (on average 1.2903225806451613) internal successors, (360), 286 states have internal predecessors, (360), 81 states have call successors, (81), 25 states have call predecessors, (81), 31 states have return successors, (107), 80 states have call predecessors, (107), 78 states have call successors, (107) [2024-10-24 12:50:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 548 transitions. [2024-10-24 12:50:13,193 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 548 transitions. Word has length 104 [2024-10-24 12:50:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:13,194 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 548 transitions. [2024-10-24 12:50:13,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 36 states have internal predecessors, (127), 13 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (30), 11 states have call predecessors, (30), 13 states have call successors, (30) [2024-10-24 12:50:13,195 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 548 transitions. [2024-10-24 12:50:13,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 12:50:13,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:13,198 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, 1] [2024-10-24 12:50:13,220 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 12:50:13,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:13,402 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:13,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:13,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1437229106, now seen corresponding path program 1 times [2024-10-24 12:50:13,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:13,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448681119] [2024-10-24 12:50:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:13,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:14,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:14,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:50:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:14,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:50:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:14,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:14,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:50:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:14,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:50:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:14,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:50:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:14,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 12:50:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:14,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:50:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:15,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 12:50:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:15,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 12:50:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:15,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 12:50:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 36 proven. 7 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-10-24 12:50:15,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448681119] [2024-10-24 12:50:15,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448681119] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223459150] [2024-10-24 12:50:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:15,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:15,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:15,378 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 12:50:15,379 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 12:50:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:15,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-24 12:50:15,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:15,980 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 12:50:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-24 12:50:16,197 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:50:16,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223459150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:16,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:50:16,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2024-10-24 12:50:16,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469696479] [2024-10-24 12:50:16,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:16,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:50:16,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:16,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:50:16,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2024-10-24 12:50:16,200 INFO L87 Difference]: Start difference. First operand 392 states and 548 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 12:50:20,786 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 12:50:25,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:29,144 WARN L539 Checker$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 12:50:33,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:37,671 WARN L539 Checker$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 12:50:41,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:45,745 WARN L539 Checker$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 12:50:45,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:45,751 INFO L93 Difference]: Finished difference Result 415 states and 577 transitions. [2024-10-24 12:50:45,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:50:45,752 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 104 [2024-10-24 12:50:45,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:45,755 INFO L225 Difference]: With dead ends: 415 [2024-10-24 12:50:45,755 INFO L226 Difference]: Without dead ends: 249 [2024-10-24 12:50:45,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-10-24 12:50:45,756 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 129 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 9 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:45,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 674 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 452 Invalid, 7 Unknown, 0 Unchecked, 29.5s Time] [2024-10-24 12:50:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-10-24 12:50:45,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 232. [2024-10-24 12:50:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 162 states have (on average 1.2777777777777777) internal successors, (207), 167 states have internal predecessors, (207), 49 states have call successors, (49), 16 states have call predecessors, (49), 20 states have return successors, (63), 48 states have call predecessors, (63), 47 states have call successors, (63) [2024-10-24 12:50:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 319 transitions. [2024-10-24 12:50:45,783 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 319 transitions. Word has length 104 [2024-10-24 12:50:45,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:45,784 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 319 transitions. [2024-10-24 12:50:45,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 12:50:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 319 transitions. [2024-10-24 12:50:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-24 12:50:45,785 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:45,785 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:50:45,808 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 12:50:45,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:45,987 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:45,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash -498965162, now seen corresponding path program 1 times [2024-10-24 12:50:45,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:45,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932566514] [2024-10-24 12:50:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:45,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:46,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:46,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:50:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:46,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:50:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:46,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:46,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:50:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:46,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 12:50:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:47,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 12:50:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:47,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:50:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:47,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 12:50:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:47,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 12:50:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:47,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-24 12:50:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:47,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 12:50:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-10-24 12:50:47,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:47,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932566514] [2024-10-24 12:50:47,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932566514] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:47,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993897899] [2024-10-24 12:50:47,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:47,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:47,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:47,098 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 12:50:47,099 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 12:50:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:47,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-24 12:50:47,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:47,650 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 12:50:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-24 12:50:48,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:50:48,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993897899] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:48,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:50:48,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2024-10-24 12:50:48,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104291010] [2024-10-24 12:50:48,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:48,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:50:48,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:48,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:50:48,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-10-24 12:50:48,010 INFO L87 Difference]: Start difference. First operand 232 states and 319 transitions. Second operand has 12 states, 10 states have (on average 6.5) internal successors, (65), 11 states have internal predecessors, (65), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-24 12:50:52,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:57,187 WARN L539 Checker$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 12:51:01,207 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]