./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_reserve_relative_harness_negated.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_reserve_relative_harness_negated.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 159e2e7d83d3b6b4cf1f3ed2869e7b3577187883e3957f87f67106f5f6570745 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:48:53,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:48:53,884 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 12:48:53,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:48:53,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:48:53,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:48:53,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:48:53,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:48:53,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:48:53,925 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:48:53,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:48:53,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:48:53,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:48:53,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:48:53,928 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:48:53,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:48:53,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:48:53,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:48:53,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:48:53,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:48:53,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:48:53,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:48:53,936 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:48:53,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:48:53,937 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:48:53,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:48:53,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:48:53,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:48:53,941 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:48:53,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:48:53,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:48:53,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:48:53,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:48:53,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:48:53,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:48:53,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:48:53,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:48:53,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:48:53,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:48:53,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 159e2e7d83d3b6b4cf1f3ed2869e7b3577187883e3957f87f67106f5f6570745 [2024-10-24 12:48:54,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:48:54,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:48:54,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:48:54,257 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:48:54,258 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:48:54,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness_negated.i [2024-10-24 12:48:55,802 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:48:56,280 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:48:56,281 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness_negated.i [2024-10-24 12:48:56,318 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00f411c9/f929bc7d02fe4167a295f9cc9a04717d/FLAG344321a11 [2024-10-24 12:48:56,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00f411c9/f929bc7d02fe4167a295f9cc9a04717d [2024-10-24 12:48:56,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:48:56,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:48:56,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:48:56,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:48:56,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:48:56,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:48:56" (1/1) ... [2024-10-24 12:48:56,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b0874aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:56, skipping insertion in model container [2024-10-24 12:48:56,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:48:56" (1/1) ... [2024-10-24 12:48:56,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:48:56,831 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_reserve_relative_harness_negated.i[4503,4516] [2024-10-24 12:48:56,839 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_reserve_relative_harness_negated.i[4563,4576] [2024-10-24 12:48:57,750 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:57,751 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:57,753 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:57,754 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:57,755 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:57,768 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:57,769 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:57,775 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:57,776 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,255 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,256 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,337 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,338 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:48:58,466 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:48:58,481 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_reserve_relative_harness_negated.i[4503,4516] [2024-10-24 12:48:58,483 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_reserve_relative_harness_negated.i[4563,4576] [2024-10-24 12:48:58,539 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,539 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,540 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,540 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,541 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,587 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,589 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,590 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,590 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,678 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,682 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,735 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8085] [2024-10-24 12:48:58,737 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,737 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:58,749 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8571-8582] [2024-10-24 12:48:58,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:48:59,004 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:48:59,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59 WrapperNode [2024-10-24 12:48:59,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:48:59,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:48:59,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:48:59,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:48:59,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,203 INFO L138 Inliner]: procedures = 681, calls = 2487, calls flagged for inlining = 58, calls inlined = 13, statements flattened = 1021 [2024-10-24 12:48:59,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:48:59,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:48:59,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:48:59,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:48:59,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,228 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,290 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-10-24 12:48:59,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:48:59,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:48:59,348 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:48:59,348 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:48:59,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (1/1) ... [2024-10-24 12:48:59,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:48:59,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:48:59,399 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 12:48:59,403 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 12:48:59,450 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-10-24 12:48:59,451 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-10-24 12:48:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:48:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-10-24 12:48:59,451 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-10-24 12:48:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-24 12:48:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-10-24 12:48:59,451 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-10-24 12:48:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 12:48:59,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 12:48:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:48:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:48:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-10-24 12:48:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:48:59,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:48:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-10-24 12:48:59,453 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-10-24 12:48:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2024-10-24 12:48:59,453 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2024-10-24 12:48:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-10-24 12:48:59,453 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-10-24 12:48:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 12:48:59,453 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 12:48:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:48:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-10-24 12:48:59,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-10-24 12:48:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-10-24 12:48:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-10-24 12:48:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-10-24 12:48:59,454 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-10-24 12:48:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-10-24 12:48:59,454 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-10-24 12:48:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-24 12:48:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 12:48:59,742 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:48:59,745 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:49:00,857 INFO L? ?]: Removed 127 outVars from TransFormulas that were not future-live. [2024-10-24 12:49:00,857 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:49:01,029 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:49:01,029 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-24 12:49:01,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:49:01 BoogieIcfgContainer [2024-10-24 12:49:01,030 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:49:01,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:49:01,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:49:01,037 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:49:01,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:48:56" (1/3) ... [2024-10-24 12:49:01,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d646dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:49:01, skipping insertion in model container [2024-10-24 12:49:01,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:59" (2/3) ... [2024-10-24 12:49:01,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d646dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:49:01, skipping insertion in model container [2024-10-24 12:49:01,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:49:01" (3/3) ... [2024-10-24 12:49:01,040 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness_negated.i [2024-10-24 12:49:01,058 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:49:01,059 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:49:01,134 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:49:01,143 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;@41f5d0b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:49:01,144 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 12:49:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 95 states have internal predecessors, (131), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-10-24 12:49:01,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 12:49:01,157 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:01,158 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:49:01,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:01,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:01,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1034019318, now seen corresponding path program 1 times [2024-10-24 12:49:01,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:01,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076480107] [2024-10-24 12:49:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:01,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:49:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:49:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:49:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:49:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:49:01,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:01,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076480107] [2024-10-24 12:49:01,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076480107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:01,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:01,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:49:01,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823238127] [2024-10-24 12:49:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:01,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:49:01,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:01,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:49:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:49:01,953 INFO L87 Difference]: Start difference. First operand has 145 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 95 states have internal predecessors, (131), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:49:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:02,689 INFO L93 Difference]: Finished difference Result 289 states and 424 transitions. [2024-10-24 12:49:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:49:02,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2024-10-24 12:49:02,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:02,704 INFO L225 Difference]: With dead ends: 289 [2024-10-24 12:49:02,705 INFO L226 Difference]: Without dead ends: 151 [2024-10-24 12:49:02,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:49:02,713 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 120 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:02,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 222 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 12:49:02,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-24 12:49:02,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2024-10-24 12:49:02,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 94 states have internal predecessors, (120), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-10-24 12:49:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 195 transitions. [2024-10-24 12:49:02,772 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 195 transitions. Word has length 39 [2024-10-24 12:49:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:02,773 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 195 transitions. [2024-10-24 12:49:02,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:49:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 195 transitions. [2024-10-24 12:49:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 12:49:02,776 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:02,777 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:49:02,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:49:02,777 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:02,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:02,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1399154358, now seen corresponding path program 1 times [2024-10-24 12:49:02,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:02,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164685372] [2024-10-24 12:49:02,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:02,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:49:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:49:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:49:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:49:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:49:03,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:03,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164685372] [2024-10-24 12:49:03,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164685372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:03,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:03,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:49:03,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512295444] [2024-10-24 12:49:03,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:03,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:49:03,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:03,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:49:03,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:49:03,564 INFO L87 Difference]: Start difference. First operand 143 states and 195 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 12:49:04,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:04,327 INFO L93 Difference]: Finished difference Result 283 states and 389 transitions. [2024-10-24 12:49:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:49:04,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2024-10-24 12:49:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:04,334 INFO L225 Difference]: With dead ends: 283 [2024-10-24 12:49:04,335 INFO L226 Difference]: Without dead ends: 153 [2024-10-24 12:49:04,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:49:04,337 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 176 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:04,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 390 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 12:49:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-10-24 12:49:04,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2024-10-24 12:49:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 96 states have internal predecessors, (121), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2024-10-24 12:49:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 202 transitions. [2024-10-24 12:49:04,374 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 202 transitions. Word has length 39 [2024-10-24 12:49:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:04,375 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 202 transitions. [2024-10-24 12:49:04,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 12:49:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 202 transitions. [2024-10-24 12:49:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-24 12:49:04,377 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:04,377 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:49:04,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:49:04,377 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:04,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:04,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1644316021, now seen corresponding path program 1 times [2024-10-24 12:49:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:04,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280757406] [2024-10-24 12:49:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:04,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:49:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:49:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:49:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:49:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:49:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:04,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280757406] [2024-10-24 12:49:04,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280757406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:04,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:04,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:49:04,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827680759] [2024-10-24 12:49:04,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:04,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:49:04,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:04,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:49:04,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:49:04,910 INFO L87 Difference]: Start difference. First operand 145 states and 202 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 12:49:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:05,925 INFO L93 Difference]: Finished difference Result 189 states and 254 transitions. [2024-10-24 12:49:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:49:05,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2024-10-24 12:49:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:05,929 INFO L225 Difference]: With dead ends: 189 [2024-10-24 12:49:05,929 INFO L226 Difference]: Without dead ends: 155 [2024-10-24 12:49:05,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:49:05,930 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 120 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:05,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 536 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 12:49:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-10-24 12:49:05,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 147. [2024-10-24 12:49:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 96 states have (on average 1.28125) internal successors, (123), 98 states have internal predecessors, (123), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2024-10-24 12:49:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 204 transitions. [2024-10-24 12:49:05,955 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 204 transitions. Word has length 45 [2024-10-24 12:49:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:05,956 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 204 transitions. [2024-10-24 12:49:05,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 12:49:05,956 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 204 transitions. [2024-10-24 12:49:05,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 12:49:05,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:05,958 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:49:05,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:49:05,958 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:05,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash -383482251, now seen corresponding path program 1 times [2024-10-24 12:49:05,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:05,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091785447] [2024-10-24 12:49:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:05,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:49:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:49:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:49:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:49:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 12:49:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 12:49:06,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:06,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091785447] [2024-10-24 12:49:06,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091785447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:06,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:06,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:49:06,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10416659] [2024-10-24 12:49:06,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:06,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:49:06,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:06,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:49:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:49:06,536 INFO L87 Difference]: Start difference. First operand 147 states and 204 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 12:49:07,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:07,422 INFO L93 Difference]: Finished difference Result 282 states and 386 transitions. [2024-10-24 12:49:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:49:07,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 52 [2024-10-24 12:49:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:07,425 INFO L225 Difference]: With dead ends: 282 [2024-10-24 12:49:07,425 INFO L226 Difference]: Without dead ends: 156 [2024-10-24 12:49:07,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:49:07,427 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 183 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:07,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 415 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 12:49:07,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-10-24 12:49:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2024-10-24 12:49:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 96 states have (on average 1.28125) internal successors, (123), 98 states have internal predecessors, (123), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-10-24 12:49:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 202 transitions. [2024-10-24 12:49:07,443 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 202 transitions. Word has length 52 [2024-10-24 12:49:07,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:07,443 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 202 transitions. [2024-10-24 12:49:07,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 12:49:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 202 transitions. [2024-10-24 12:49:07,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 12:49:07,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:07,446 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:49:07,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:49:07,446 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:07,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:07,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1178416406, now seen corresponding path program 1 times [2024-10-24 12:49:07,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:07,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111981674] [2024-10-24 12:49:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:07,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:49:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:49:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:49:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:49:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:49:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 12:49:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111981674] [2024-10-24 12:49:09,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111981674] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:49:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134423419] [2024-10-24 12:49:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:09,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:49:09,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:49:09,671 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 12:49:09,672 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 12:49:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:10,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 12:49:10,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:49:10,280 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 12:49:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:49:10,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:49:10,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134423419] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:10,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:49:10,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 17 [2024-10-24 12:49:10,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393671047] [2024-10-24 12:49:10,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:10,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:49:10,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:10,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:49:10,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:49:10,609 INFO L87 Difference]: Start difference. First operand 147 states and 202 transitions. Second operand has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 12:49:15,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:49:19,509 WARN L539 Checker$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 12:49:23,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:49:27,839 WARN L539 Checker$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 12:49:31,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:49:36,113 WARN L539 Checker$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 12:49:40,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:49:44,769 WARN L539 Checker$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 12:49:48,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:49:52,803 WARN L539 Checker$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 12:49:56,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:00,901 WARN L539 Checker$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 12:50:04,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:08,977 WARN L539 Checker$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 12:50:13,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:17,068 WARN L539 Checker$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 12:50:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:17,091 INFO L93 Difference]: Finished difference Result 411 states and 575 transitions. [2024-10-24 12:50:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:50:17,092 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 56 [2024-10-24 12:50:17,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:17,095 INFO L225 Difference]: With dead ends: 411 [2024-10-24 12:50:17,099 INFO L226 Difference]: Without dead ends: 277 [2024-10-24 12:50:17,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-10-24 12:50:17,101 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 185 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 16 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:17,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1634 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 743 Invalid, 17 Unknown, 0 Unchecked, 66.3s Time] [2024-10-24 12:50:17,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-10-24 12:50:17,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 268. [2024-10-24 12:50:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 178 states have (on average 1.2865168539325842) internal successors, (229), 185 states have internal predecessors, (229), 66 states have call successors, (66), 19 states have call predecessors, (66), 23 states have return successors, (79), 63 states have call predecessors, (79), 64 states have call successors, (79) [2024-10-24 12:50:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 374 transitions. [2024-10-24 12:50:17,155 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 374 transitions. Word has length 56 [2024-10-24 12:50:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:17,156 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 374 transitions. [2024-10-24 12:50:17,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 12:50:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 374 transitions. [2024-10-24 12:50:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 12:50:17,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:17,161 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:50:17,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 12:50:17,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:17,363 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:17,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:17,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1679000376, now seen corresponding path program 1 times [2024-10-24 12:50:17,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:17,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823134881] [2024-10-24 12:50:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:17,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:17,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:17,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:50:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:17,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:17,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:50:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:17,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 12:50:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:17,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:50:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:17,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 12:50:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 12:50:17,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:17,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823134881] [2024-10-24 12:50:17,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823134881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:17,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:50:17,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:50:17,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427590086] [2024-10-24 12:50:17,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:17,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:50:17,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:17,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:50:17,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:50:17,789 INFO L87 Difference]: Start difference. First operand 268 states and 374 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 12:50:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:18,607 INFO L93 Difference]: Finished difference Result 311 states and 420 transitions. [2024-10-24 12:50:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:50:18,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2024-10-24 12:50:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:18,611 INFO L225 Difference]: With dead ends: 311 [2024-10-24 12:50:18,611 INFO L226 Difference]: Without dead ends: 274 [2024-10-24 12:50:18,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:50:18,617 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 120 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:18,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 546 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 12:50:18,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-10-24 12:50:18,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 264. [2024-10-24 12:50:18,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 176 states have (on average 1.2840909090909092) internal successors, (226), 184 states have internal predecessors, (226), 63 states have call successors, (63), 19 states have call predecessors, (63), 24 states have return successors, (77), 60 states have call predecessors, (77), 61 states have call successors, (77) [2024-10-24 12:50:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 366 transitions. [2024-10-24 12:50:18,658 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 366 transitions. Word has length 62 [2024-10-24 12:50:18,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:18,659 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 366 transitions. [2024-10-24 12:50:18,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 12:50:18,659 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 366 transitions. [2024-10-24 12:50:18,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 12:50:18,660 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:18,660 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:50:18,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:50:18,660 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:18,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:18,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1908198166, now seen corresponding path program 1 times [2024-10-24 12:50:18,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:18,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888693814] [2024-10-24 12:50:18,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:18,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:50:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:50:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 12:50:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 12:50:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 12:50:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 12:50:19,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:19,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888693814] [2024-10-24 12:50:19,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888693814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:19,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455227171] [2024-10-24 12:50:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:19,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:19,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:19,836 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 12:50:19,837 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 12:50:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:20,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 12:50:20,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 12:50:20,416 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:50:20,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455227171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:20,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:50:20,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 14 [2024-10-24 12:50:20,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571223268] [2024-10-24 12:50:20,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:20,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:50:20,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:50:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:50:20,419 INFO L87 Difference]: Start difference. First operand 264 states and 366 transitions. Second operand has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 12:50:20,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:20,920 INFO L93 Difference]: Finished difference Result 284 states and 397 transitions. [2024-10-24 12:50:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:50:20,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2024-10-24 12:50:20,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:20,922 INFO L225 Difference]: With dead ends: 284 [2024-10-24 12:50:20,923 INFO L226 Difference]: Without dead ends: 272 [2024-10-24 12:50:20,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-10-24 12:50:20,924 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 3 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:20,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1456 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:50:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-10-24 12:50:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-10-24 12:50:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 182 states have (on average 1.2747252747252746) internal successors, (232), 192 states have internal predecessors, (232), 63 states have call successors, (63), 19 states have call predecessors, (63), 26 states have return successors, (88), 60 states have call predecessors, (88), 61 states have call successors, (88) [2024-10-24 12:50:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 383 transitions. [2024-10-24 12:50:20,947 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 383 transitions. Word has length 64 [2024-10-24 12:50:20,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:20,947 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 383 transitions. [2024-10-24 12:50:20,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 12:50:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 383 transitions. [2024-10-24 12:50:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 12:50:20,949 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:20,949 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:50:20,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 12:50:21,149 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,SelfDestructingSolverStorable6 [2024-10-24 12:50:21,150 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:21,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:21,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2090343409, now seen corresponding path program 1 times [2024-10-24 12:50:21,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:21,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101271593] [2024-10-24 12:50:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:21,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:22,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:22,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:50:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:22,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:22,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:50:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:22,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 12:50:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:22,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 12:50:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:22,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 12:50:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 12:50:22,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:22,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101271593] [2024-10-24 12:50:22,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101271593] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:22,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686886320] [2024-10-24 12:50:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:22,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:22,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:22,371 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 12:50:22,374 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 12:50:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:22,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 12:50:22,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:50:22,855 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:50:22,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686886320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:22,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:50:22,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 13 [2024-10-24 12:50:22,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259620240] [2024-10-24 12:50:22,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:22,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:50:22,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:22,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:50:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:50:22,857 INFO L87 Difference]: Start difference. First operand 272 states and 383 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 12:50:23,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:23,271 INFO L93 Difference]: Finished difference Result 531 states and 747 transitions. [2024-10-24 12:50:23,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:50:23,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-10-24 12:50:23,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:23,274 INFO L225 Difference]: With dead ends: 531 [2024-10-24 12:50:23,274 INFO L226 Difference]: Without dead ends: 272 [2024-10-24 12:50:23,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:50:23,276 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:23,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1379 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:50:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-10-24 12:50:23,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-10-24 12:50:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 182 states have (on average 1.2747252747252746) internal successors, (232), 192 states have internal predecessors, (232), 63 states have call successors, (63), 19 states have call predecessors, (63), 26 states have return successors, (87), 60 states have call predecessors, (87), 61 states have call successors, (87) [2024-10-24 12:50:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 382 transitions. [2024-10-24 12:50:23,297 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 382 transitions. Word has length 66 [2024-10-24 12:50:23,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:23,297 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 382 transitions. [2024-10-24 12:50:23,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 12:50:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 382 transitions. [2024-10-24 12:50:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 12:50:23,302 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:23,302 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:50:23,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 12:50:23,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:23,503 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:23,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:23,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1081103562, now seen corresponding path program 1 times [2024-10-24 12:50:23,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:23,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911188754] [2024-10-24 12:50:23,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:23,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:24,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:24,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:50:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:24,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:24,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:50:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:24,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:50:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:24,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:50:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:24,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 12:50:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 12:50:24,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:24,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911188754] [2024-10-24 12:50:24,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911188754] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:24,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758985586] [2024-10-24 12:50:24,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:24,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:24,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:24,251 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 12:50:24,253 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 12:50:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:24,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 12:50:24,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 12:50:24,803 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:50:24,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758985586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:24,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:50:24,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-10-24 12:50:24,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780602448] [2024-10-24 12:50:24,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:24,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:50:24,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:24,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:50:24,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:50:24,805 INFO L87 Difference]: Start difference. First operand 272 states and 382 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7)