./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3e3e2fbaf5c334dd538c3f4cd3fd09fe8b72613995bc7855bc6c61320098d05a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:54:12,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:54:12,574 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 12:54:12,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:54:12,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:54:12,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:54:12,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:54:12,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:54:12,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:54:12,601 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:54:12,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:54:12,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:54:12,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:54:12,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:54:12,603 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:54:12,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:54:12,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:54:12,608 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:54:12,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:54:12,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:54:12,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:54:12,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:54:12,611 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:54:12,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:54:12,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:54:12,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:54:12,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:54:12,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:54:12,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:54:12,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:54:12,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:54:12,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:54:12,614 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:54:12,614 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:54:12,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:54:12,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:54:12,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:54:12,615 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:54:12,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:54:12,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e3e2fbaf5c334dd538c3f4cd3fd09fe8b72613995bc7855bc6c61320098d05a [2024-10-24 12:54:12,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:54:12,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:54:12,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:54:12,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:54:12,896 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:54:12,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i [2024-10-24 12:54:14,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:54:14,792 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:54:14,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i [2024-10-24 12:54:14,836 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9f5291db/a89980ab241146ab8dfb2747b02f27db/FLAGf150281ff [2024-10-24 12:54:14,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9f5291db/a89980ab241146ab8dfb2747b02f27db [2024-10-24 12:54:14,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:54:14,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:54:14,884 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:54:14,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:54:14,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:54:14,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:54:14" (1/1) ... [2024-10-24 12:54:14,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1559b6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:14, skipping insertion in model container [2024-10-24 12:54:14,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:54:14" (1/1) ... [2024-10-24 12:54:15,020 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:54:15,333 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4504,4517] [2024-10-24 12:54:15,341 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4564,4577] [2024-10-24 12:54:16,074 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,075 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,076 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,077 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,078 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,095 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,095 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,097 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,098 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,756 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,757 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:54:16,866 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:54:16,880 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4504,4517] [2024-10-24 12:54:16,882 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4564,4577] [2024-10-24 12:54:16,929 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,929 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,930 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,932 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,933 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,938 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,939 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,940 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:16,940 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:17,097 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8271] [2024-10-24 12:54:17,103 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:17,103 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:54:17,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8757-8768] [2024-10-24 12:54:17,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:54:17,349 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:54:17,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17 WrapperNode [2024-10-24 12:54:17,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:54:17,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:54:17,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:54:17,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:54:17,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,570 INFO L138 Inliner]: procedures = 679, calls = 2604, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 800 [2024-10-24 12:54:17,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:54:17,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:54:17,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:54:17,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:54:17,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,671 INFO L175 MemorySlicer]: Split 536 memory accesses to 6 slices as follows [2, 256, 28, 6, 239, 5]. 48 percent of accesses are in the largest equivalence class. The 505 initializations are split as follows [2, 256, 6, 0, 236, 5]. The 5 writes are split as follows [0, 0, 3, 2, 0, 0]. [2024-10-24 12:54:17,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:54:17,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:54:17,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:54:17,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:54:17,752 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (1/1) ... [2024-10-24 12:54:17,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:54:17,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:54:17,789 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 12:54:17,794 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 12:54:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-10-24 12:54:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-10-24 12:54:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:54:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-10-24 12:54:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-10-24 12:54:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:54:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:54:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:54:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:54:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 12:54:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 12:54:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 12:54:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 12:54:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2024-10-24 12:54:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2024-10-24 12:54:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:54:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:54:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 12:54:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 12:54:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 12:54:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 12:54:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-24 12:54:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-24 12:54:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:54:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:54:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-10-24 12:54:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-10-24 12:54:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-10-24 12:54:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-10-24 12:54:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 12:54:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 12:54:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:54:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 12:54:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 12:54:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 12:54:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 12:54:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-24 12:54:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-24 12:54:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-24 12:54:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-24 12:54:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-24 12:54:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-24 12:54:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-10-24 12:54:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-10-24 12:54:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2024-10-24 12:54:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2024-10-24 12:54:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:54:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:54:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:54:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:54:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 12:54:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 12:54:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:54:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:54:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:54:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:54:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 12:54:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 12:54:18,173 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:54:18,176 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:54:19,057 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-10-24 12:54:19,058 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:54:19,288 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:54:19,289 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 12:54:19,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:54:19 BoogieIcfgContainer [2024-10-24 12:54:19,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:54:19,291 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:54:19,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:54:19,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:54:19,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:54:14" (1/3) ... [2024-10-24 12:54:19,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35846a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:54:19, skipping insertion in model container [2024-10-24 12:54:19,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:17" (2/3) ... [2024-10-24 12:54:19,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35846a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:54:19, skipping insertion in model container [2024-10-24 12:54:19,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:54:19" (3/3) ... [2024-10-24 12:54:19,301 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_left_trim_pred_harness.i [2024-10-24 12:54:19,318 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:54:19,318 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:54:19,386 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:54:19,393 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;@48802c8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:54:19,394 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 12:54:19,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 50 states have (on average 1.3) internal successors, (65), 51 states have internal predecessors, (65), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 12:54:19,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 12:54:19,408 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:19,410 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:19,410 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:19,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:19,417 INFO L85 PathProgramCache]: Analyzing trace with hash -928865875, now seen corresponding path program 1 times [2024-10-24 12:54:19,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:19,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308401958] [2024-10-24 12:54:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:19,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:20,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:20,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:20,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:20,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 12:54:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:20,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:54:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:20,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:54:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:20,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:54:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:20,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 12:54:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 12:54:20,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:20,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308401958] [2024-10-24 12:54:20,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308401958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:20,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:54:20,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:54:20,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155018814] [2024-10-24 12:54:20,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:20,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 12:54:20,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:20,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 12:54:20,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 12:54:20,255 INFO L87 Difference]: Start difference. First operand has 82 states, 50 states have (on average 1.3) internal successors, (65), 51 states have internal predecessors, (65), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:54:20,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:20,491 INFO L93 Difference]: Finished difference Result 162 states and 229 transitions. [2024-10-24 12:54:20,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 12:54:20,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2024-10-24 12:54:20,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:20,504 INFO L225 Difference]: With dead ends: 162 [2024-10-24 12:54:20,505 INFO L226 Difference]: Without dead ends: 76 [2024-10-24 12:54:20,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 12:54:20,515 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:20,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 12:54:20,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-24 12:54:20,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-10-24 12:54:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 47 states have internal predecessors, (56), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-24 12:54:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2024-10-24 12:54:20,567 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 54 [2024-10-24 12:54:20,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:20,568 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2024-10-24 12:54:20,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:54:20,569 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2024-10-24 12:54:20,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 12:54:20,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:20,572 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:20,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:54:20,573 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:20,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:20,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1125738136, now seen corresponding path program 1 times [2024-10-24 12:54:20,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:20,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749977443] [2024-10-24 12:54:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:20,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:21,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:21,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:21,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:21,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 12:54:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:21,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:54:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:21,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:54:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:21,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:54:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:21,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 12:54:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:21,375 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 12:54:21,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:21,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749977443] [2024-10-24 12:54:21,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749977443] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:54:21,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305095625] [2024-10-24 12:54:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:21,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:21,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:54:21,380 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 12:54:21,381 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 12:54:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:21,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:54:21,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:54:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 12:54:22,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:54:22,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305095625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:22,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:54:22,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-10-24 12:54:22,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798147558] [2024-10-24 12:54:22,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:22,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:54:22,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:54:22,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:54:22,115 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:54:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:22,653 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2024-10-24 12:54:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:54:22,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2024-10-24 12:54:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:22,657 INFO L225 Difference]: With dead ends: 139 [2024-10-24 12:54:22,658 INFO L226 Difference]: Without dead ends: 78 [2024-10-24 12:54:22,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:54:22,662 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 11 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:22,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 287 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:54:22,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-24 12:54:22,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-24 12:54:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 49 states have internal predecessors, (57), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2024-10-24 12:54:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 103 transitions. [2024-10-24 12:54:22,687 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 103 transitions. Word has length 56 [2024-10-24 12:54:22,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:22,688 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 103 transitions. [2024-10-24 12:54:22,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:54:22,689 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 103 transitions. [2024-10-24 12:54:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 12:54:22,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:22,691 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:22,713 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 12:54:22,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:22,897 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:22,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1503748227, now seen corresponding path program 1 times [2024-10-24 12:54:22,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:22,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937307177] [2024-10-24 12:54:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:22,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:23,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:23,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:23,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:23,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:54:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:23,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:54:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:23,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 12:54:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:23,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:54:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:23,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 12:54:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 12:54:23,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:23,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937307177] [2024-10-24 12:54:23,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937307177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:54:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480388528] [2024-10-24 12:54:23,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:23,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:23,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:54:23,567 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 12:54:23,568 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 12:54:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:24,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 2457 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 12:54:24,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:54:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 12:54:24,205 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:54:24,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480388528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:24,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:54:24,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-10-24 12:54:24,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530996695] [2024-10-24 12:54:24,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:24,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:54:24,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:24,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:54:24,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:54:24,211 INFO L87 Difference]: Start difference. First operand 78 states and 103 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 12:54:24,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:24,694 INFO L93 Difference]: Finished difference Result 132 states and 173 transitions. [2024-10-24 12:54:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:54:24,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 58 [2024-10-24 12:54:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:24,696 INFO L225 Difference]: With dead ends: 132 [2024-10-24 12:54:24,696 INFO L226 Difference]: Without dead ends: 78 [2024-10-24 12:54:24,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:54:24,698 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 29 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:24,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 339 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:54:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-24 12:54:24,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-24 12:54:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 49 states have internal predecessors, (57), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 20 states have call successors, (22) [2024-10-24 12:54:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-10-24 12:54:24,708 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 58 [2024-10-24 12:54:24,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:24,709 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-10-24 12:54:24,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 12:54:24,709 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-10-24 12:54:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 12:54:24,711 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:24,711 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:24,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:54:24,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 12:54:24,912 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:24,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2054394227, now seen corresponding path program 1 times [2024-10-24 12:54:24,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:24,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472316400] [2024-10-24 12:54:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:24,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:54:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:54:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:26,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:54:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:26,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 12:54:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:26,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 12:54:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 12:54:26,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:26,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472316400] [2024-10-24 12:54:26,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472316400] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:26,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:54:26,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:54:26,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725510794] [2024-10-24 12:54:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:26,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:54:26,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:26,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:54:26,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:54:26,111 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-10-24 12:54:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:27,003 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2024-10-24 12:54:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:54:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 62 [2024-10-24 12:54:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:27,007 INFO L225 Difference]: With dead ends: 89 [2024-10-24 12:54:27,007 INFO L226 Difference]: Without dead ends: 87 [2024-10-24 12:54:27,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:54:27,008 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 3 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:27,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 604 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 12:54:27,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-24 12:54:27,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-10-24 12:54:27,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 55 states have internal predecessors, (62), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (29), 21 states have call predecessors, (29), 21 states have call successors, (29) [2024-10-24 12:54:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 114 transitions. [2024-10-24 12:54:27,028 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 114 transitions. Word has length 62 [2024-10-24 12:54:27,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:27,029 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 114 transitions. [2024-10-24 12:54:27,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-10-24 12:54:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 114 transitions. [2024-10-24 12:54:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 12:54:27,031 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:27,031 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:27,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:54:27,031 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:27,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:27,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1369444309, now seen corresponding path program 1 times [2024-10-24 12:54:27,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:27,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875090903] [2024-10-24 12:54:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:27,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:28,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:28,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:28,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:28,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:54:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:28,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:54:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:28,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:54:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:28,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 12:54:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:28,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 12:54:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-24 12:54:29,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:29,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875090903] [2024-10-24 12:54:29,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875090903] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:54:29,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203353036] [2024-10-24 12:54:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:29,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:29,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:54:29,050 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 12:54:29,052 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 12:54:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:29,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-24 12:54:29,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:54:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-24 12:54:30,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:54:31,117 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-10-24 12:54:31,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2024-10-24 12:54:31,130 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-24 12:54:31,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203353036] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:54:31,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:54:31,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 23 [2024-10-24 12:54:31,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715138044] [2024-10-24 12:54:31,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:54:31,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 12:54:31,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:31,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 12:54:31,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-10-24 12:54:31,133 INFO L87 Difference]: Start difference. First operand 86 states and 114 transitions. Second operand has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 21 states have internal predecessors, (76), 7 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-10-24 12:54:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:34,282 INFO L93 Difference]: Finished difference Result 266 states and 374 transitions. [2024-10-24 12:54:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 12:54:34,283 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 21 states have internal predecessors, (76), 7 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 66 [2024-10-24 12:54:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:34,286 INFO L225 Difference]: With dead ends: 266 [2024-10-24 12:54:34,286 INFO L226 Difference]: Without dead ends: 196 [2024-10-24 12:54:34,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 124 SyntacticMatches, 15 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2024-10-24 12:54:34,292 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 128 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:34,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 746 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-24 12:54:34,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-10-24 12:54:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 173. [2024-10-24 12:54:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 110 states have internal predecessors, (126), 47 states have call successors, (47), 17 states have call predecessors, (47), 19 states have return successors, (60), 45 states have call predecessors, (60), 43 states have call successors, (60) [2024-10-24 12:54:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 233 transitions. [2024-10-24 12:54:34,337 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 233 transitions. Word has length 66 [2024-10-24 12:54:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:34,337 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 233 transitions. [2024-10-24 12:54:34,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 21 states have internal predecessors, (76), 7 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-10-24 12:54:34,337 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 233 transitions. [2024-10-24 12:54:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 12:54:34,339 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:34,339 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:34,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 12:54:34,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:34,540 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:34,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1159858294, now seen corresponding path program 1 times [2024-10-24 12:54:34,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:34,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485880363] [2024-10-24 12:54:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:34,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:34,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:34,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:34,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:34,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:54:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:34,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:54:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:34,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:54:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:34,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 12:54:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:34,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 12:54:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-24 12:54:34,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:34,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485880363] [2024-10-24 12:54:34,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485880363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:34,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:54:34,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:54:34,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230002669] [2024-10-24 12:54:34,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:34,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:54:34,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:34,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:54:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:54:34,829 INFO L87 Difference]: Start difference. First operand 173 states and 233 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:54:35,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:35,179 INFO L93 Difference]: Finished difference Result 261 states and 349 transitions. [2024-10-24 12:54:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:54:35,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2024-10-24 12:54:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:35,182 INFO L225 Difference]: With dead ends: 261 [2024-10-24 12:54:35,182 INFO L226 Difference]: Without dead ends: 176 [2024-10-24 12:54:35,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:54:35,184 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:35,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 12:54:35,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-10-24 12:54:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-10-24 12:54:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 109 states have (on average 1.18348623853211) internal successors, (129), 113 states have internal predecessors, (129), 47 states have call successors, (47), 17 states have call predecessors, (47), 19 states have return successors, (60), 45 states have call predecessors, (60), 43 states have call successors, (60) [2024-10-24 12:54:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 236 transitions. [2024-10-24 12:54:35,206 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 236 transitions. Word has length 69 [2024-10-24 12:54:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:35,207 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 236 transitions. [2024-10-24 12:54:35,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:54:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 236 transitions. [2024-10-24 12:54:35,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 12:54:35,208 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:35,209 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:35,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:54:35,209 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:35,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:35,209 INFO L85 PathProgramCache]: Analyzing trace with hash -660170796, now seen corresponding path program 1 times [2024-10-24 12:54:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849350264] [2024-10-24 12:54:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:35,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:35,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:35,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:35,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:54:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:35,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:54:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:35,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:54:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:35,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 12:54:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:35,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 12:54:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:35,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 12:54:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:35,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 12:54:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:54:35,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:35,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849350264] [2024-10-24 12:54:35,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849350264] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:35,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:54:35,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:54:35,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543928346] [2024-10-24 12:54:35,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:35,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:54:35,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:35,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:54:35,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:54:35,651 INFO L87 Difference]: Start difference. First operand 176 states and 236 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 12:54:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:36,190 INFO L93 Difference]: Finished difference Result 258 states and 340 transitions. [2024-10-24 12:54:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:54:36,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2024-10-24 12:54:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:36,193 INFO L225 Difference]: With dead ends: 258 [2024-10-24 12:54:36,196 INFO L226 Difference]: Without dead ends: 176 [2024-10-24 12:54:36,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:54:36,198 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 3 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:36,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 311 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:54:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-10-24 12:54:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-10-24 12:54:36,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 109 states have (on average 1.18348623853211) internal successors, (129), 113 states have internal predecessors, (129), 47 states have call successors, (47), 17 states have call predecessors, (47), 19 states have return successors, (57), 45 states have call predecessors, (57), 43 states have call successors, (57) [2024-10-24 12:54:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 233 transitions. [2024-10-24 12:54:36,247 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 233 transitions. Word has length 73 [2024-10-24 12:54:36,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:36,248 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 233 transitions. [2024-10-24 12:54:36,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 12:54:36,248 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 233 transitions. [2024-10-24 12:54:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 12:54:36,249 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:36,249 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:36,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:54:36,250 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:36,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash 329787432, now seen corresponding path program 1 times [2024-10-24 12:54:36,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:36,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135863388] [2024-10-24 12:54:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:36,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:37,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:37,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:37,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:37,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:54:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:37,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:54:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:37,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:54:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:37,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 12:54:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:37,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:54:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:37,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 12:54:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-24 12:54:37,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:37,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135863388] [2024-10-24 12:54:37,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135863388] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:54:37,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796350478] [2024-10-24 12:54:37,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:37,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:37,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:54:37,862 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 12:54:37,863 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 12:54:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:38,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 2533 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-24 12:54:38,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:54:39,720 INFO L349 Elim1Store]: treesize reduction 64, result has 27.3 percent of original size [2024-10-24 12:54:39,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 44 [2024-10-24 12:54:39,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:54:39,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 52 [2024-10-24 12:54:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 12:54:39,823 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:54:39,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796350478] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:54:39,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 12:54:39,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 20 [2024-10-24 12:54:39,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967066514] [2024-10-24 12:54:39,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 12:54:39,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 12:54:39,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:39,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 12:54:39,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2024-10-24 12:54:39,972 INFO L87 Difference]: Start difference. First operand 176 states and 233 transitions. Second operand has 20 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-10-24 12:54:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:43,410 INFO L93 Difference]: Finished difference Result 319 states and 429 transitions. [2024-10-24 12:54:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-24 12:54:43,412 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 73 [2024-10-24 12:54:43,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:43,414 INFO L225 Difference]: With dead ends: 319 [2024-10-24 12:54:43,414 INFO L226 Difference]: Without dead ends: 198 [2024-10-24 12:54:43,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 99 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=208, Invalid=1352, Unknown=0, NotChecked=0, Total=1560 [2024-10-24 12:54:43,420 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 106 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:43,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 942 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-24 12:54:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-10-24 12:54:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 168. [2024-10-24 12:54:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 104 states have (on average 1.1538461538461537) internal successors, (120), 108 states have internal predecessors, (120), 45 states have call successors, (45), 16 states have call predecessors, (45), 18 states have return successors, (52), 43 states have call predecessors, (52), 41 states have call successors, (52) [2024-10-24 12:54:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 217 transitions. [2024-10-24 12:54:43,449 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 217 transitions. Word has length 73 [2024-10-24 12:54:43,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:43,449 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 217 transitions. [2024-10-24 12:54:43,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-10-24 12:54:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 217 transitions. [2024-10-24 12:54:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 12:54:43,453 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:43,453 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:43,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 12:54:43,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:43,654 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:43,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:43,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1216939279, now seen corresponding path program 1 times [2024-10-24 12:54:43,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:43,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836122352] [2024-10-24 12:54:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:43,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:44,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:44,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:44,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:44,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 12:54:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:44,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:54:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:44,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:54:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:44,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 12:54:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:44,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 12:54:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:44,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 12:54:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:44,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 12:54:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:44,536 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-24 12:54:44,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:44,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836122352] [2024-10-24 12:54:44,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836122352] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:44,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:54:44,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:54:44,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663573047] [2024-10-24 12:54:44,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:44,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:54:44,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:44,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:54:44,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:54:44,538 INFO L87 Difference]: Start difference. First operand 168 states and 217 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-24 12:54:45,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:45,469 INFO L93 Difference]: Finished difference Result 180 states and 229 transitions. [2024-10-24 12:54:45,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:54:45,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 75 [2024-10-24 12:54:45,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:45,472 INFO L225 Difference]: With dead ends: 180 [2024-10-24 12:54:45,472 INFO L226 Difference]: Without dead ends: 178 [2024-10-24 12:54:45,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:54:45,473 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 3 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:45,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 614 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 12:54:45,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-10-24 12:54:45,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2024-10-24 12:54:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 110 states have (on average 1.1454545454545455) internal successors, (126), 114 states have internal predecessors, (126), 46 states have call successors, (46), 18 states have call predecessors, (46), 20 states have return successors, (53), 44 states have call predecessors, (53), 42 states have call successors, (53) [2024-10-24 12:54:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 225 transitions. [2024-10-24 12:54:45,499 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 225 transitions. Word has length 75 [2024-10-24 12:54:45,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:45,501 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 225 transitions. [2024-10-24 12:54:45,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-24 12:54:45,501 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 225 transitions. [2024-10-24 12:54:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 12:54:45,502 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:45,502 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:45,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:54:45,503 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:45,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:45,503 INFO L85 PathProgramCache]: Analyzing trace with hash 803355435, now seen corresponding path program 1 times [2024-10-24 12:54:45,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:45,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561853701] [2024-10-24 12:54:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:45,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:46,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:46,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:46,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:47,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 12:54:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:47,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:54:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:47,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:54:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:47,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:54:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:47,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 12:54:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 12:54:47,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:47,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561853701] [2024-10-24 12:54:47,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561853701] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:54:47,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223198646] [2024-10-24 12:54:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:47,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:47,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:54:47,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:54:47,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 12:54:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:47,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 12:54:47,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:54:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 12:54:47,833 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:54:47,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223198646] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:47,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:54:47,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2024-10-24 12:54:47,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803871930] [2024-10-24 12:54:47,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:47,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:54:47,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:54:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-10-24 12:54:47,835 INFO L87 Difference]: Start difference. First operand 177 states and 225 transitions. Second operand has 9 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 12:54:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:48,610 INFO L93 Difference]: Finished difference Result 320 states and 409 transitions. [2024-10-24 12:54:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:54:48,610 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2024-10-24 12:54:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:48,612 INFO L225 Difference]: With dead ends: 320 [2024-10-24 12:54:48,612 INFO L226 Difference]: Without dead ends: 185 [2024-10-24 12:54:48,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-10-24 12:54:48,613 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:48,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 673 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 12:54:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-10-24 12:54:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 181. [2024-10-24 12:54:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 113 states have (on average 1.1415929203539823) internal successors, (129), 118 states have internal predecessors, (129), 46 states have call successors, (46), 18 states have call predecessors, (46), 21 states have return successors, (58), 44 states have call predecessors, (58), 42 states have call successors, (58) [2024-10-24 12:54:48,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 233 transitions. [2024-10-24 12:54:48,634 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 233 transitions. Word has length 74 [2024-10-24 12:54:48,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:48,635 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 233 transitions. [2024-10-24 12:54:48,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 12:54:48,635 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 233 transitions. [2024-10-24 12:54:48,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 12:54:48,636 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:48,636 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:48,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 12:54:48,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 12:54:48,838 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:48,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1788087054, now seen corresponding path program 1 times [2024-10-24 12:54:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:48,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692914790] [2024-10-24 12:54:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:49,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:49,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:49,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:50,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 12:54:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:50,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:54:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:50,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 12:54:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:50,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 12:54:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:50,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 12:54:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 12:54:50,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692914790] [2024-10-24 12:54:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692914790] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:54:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411365252] [2024-10-24 12:54:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:50,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:50,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:54:50,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:54:50,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 12:54:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:50,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-24 12:54:50,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:54:50,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 12:54:50,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 12:54:51,146 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 12:54:51,147 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:54:51,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411365252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:51,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:54:51,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2024-10-24 12:54:51,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233561719] [2024-10-24 12:54:51,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:51,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:54:51,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:51,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:54:51,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-10-24 12:54:51,152 INFO L87 Difference]: Start difference. First operand 181 states and 233 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-24 12:54:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:52,463 INFO L93 Difference]: Finished difference Result 526 states and 689 transitions. [2024-10-24 12:54:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:54:52,463 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 76 [2024-10-24 12:54:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:52,466 INFO L225 Difference]: With dead ends: 526 [2024-10-24 12:54:52,467 INFO L226 Difference]: Without dead ends: 387 [2024-10-24 12:54:52,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-10-24 12:54:52,468 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 107 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:52,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 318 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 12:54:52,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-10-24 12:54:52,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 351. [2024-10-24 12:54:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 222 states have (on average 1.1486486486486487) internal successors, (255), 232 states have internal predecessors, (255), 88 states have call successors, (88), 34 states have call predecessors, (88), 40 states have return successors, (113), 84 states have call predecessors, (113), 80 states have call successors, (113) [2024-10-24 12:54:52,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 456 transitions. [2024-10-24 12:54:52,515 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 456 transitions. Word has length 76 [2024-10-24 12:54:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:52,515 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 456 transitions. [2024-10-24 12:54:52,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-24 12:54:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 456 transitions. [2024-10-24 12:54:52,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 12:54:52,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:52,517 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:52,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 12:54:52,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:52,719 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:52,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:52,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1586263120, now seen corresponding path program 1 times [2024-10-24 12:54:52,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:52,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681572257] [2024-10-24 12:54:52,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:52,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:52,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:52,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:52,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:52,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 12:54:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:52,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:54:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:52,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 12:54:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:52,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 12:54:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:52,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 12:54:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-24 12:54:53,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:53,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681572257] [2024-10-24 12:54:53,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681572257] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:54:53,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964556324] [2024-10-24 12:54:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:53,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:53,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:54:53,003 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:54:53,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 12:54:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:53,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 2508 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 12:54:53,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:54:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 12:54:53,416 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:54:53,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964556324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:53,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:54:53,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-10-24 12:54:53,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252045033] [2024-10-24 12:54:53,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:53,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:54:53,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:53,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:54:53,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:54:53,418 INFO L87 Difference]: Start difference. First operand 351 states and 456 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:54:53,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:53,797 INFO L93 Difference]: Finished difference Result 564 states and 728 transitions. [2024-10-24 12:54:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:54:53,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2024-10-24 12:54:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:53,800 INFO L225 Difference]: With dead ends: 564 [2024-10-24 12:54:53,800 INFO L226 Difference]: Without dead ends: 270 [2024-10-24 12:54:53,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:54:53,802 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:53,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:54:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-10-24 12:54:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2024-10-24 12:54:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 173 states have (on average 1.1271676300578035) internal successors, (195), 179 states have internal predecessors, (195), 62 states have call successors, (62), 28 states have call predecessors, (62), 30 states have return successors, (73), 58 states have call predecessors, (73), 56 states have call successors, (73) [2024-10-24 12:54:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 330 transitions. [2024-10-24 12:54:53,830 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 330 transitions. Word has length 76 [2024-10-24 12:54:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:53,830 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 330 transitions. [2024-10-24 12:54:53,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 12:54:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 330 transitions. [2024-10-24 12:54:53,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 12:54:53,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:53,832 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:54:53,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 12:54:54,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:54,033 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:54,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash -485544636, now seen corresponding path program 1 times [2024-10-24 12:54:54,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:54,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938298040] [2024-10-24 12:54:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:54,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:54,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:54,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:54,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 12:54:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:54,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:54,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:54:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:54,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:54:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:54,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 12:54:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:54,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:54:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:55,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:54:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:55,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 12:54:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-24 12:54:55,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:55,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938298040] [2024-10-24 12:54:55,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938298040] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:54:55,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818425340] [2024-10-24 12:54:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:55,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:55,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:54:55,021 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:54:55,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 12:54:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:55,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-24 12:54:55,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:54:55,600 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 12:54:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-24 12:54:56,199 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:54:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818425340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:56,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:54:56,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 22 [2024-10-24 12:54:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790971680] [2024-10-24 12:54:56,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:56,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 12:54:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:56,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 12:54:56,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2024-10-24 12:54:56,202 INFO L87 Difference]: Start difference. First operand 266 states and 330 transitions. Second operand has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-24 12:55:01,278 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 12:55:05,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:55:09,387 WARN L539 Checker$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 12:55:13,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:55:17,698 WARN L539 Checker$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 12:55:21,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:55:25,826 WARN L539 Checker$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 12:55:29,852 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 12:55:30,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:55:30,057 INFO L93 Difference]: Finished difference Result 490 states and 618 transitions. [2024-10-24 12:55:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 12:55:30,058 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 86 [2024-10-24 12:55:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:55:30,061 INFO L225 Difference]: With dead ends: 490 [2024-10-24 12:55:30,061 INFO L226 Difference]: Without dead ends: 383 [2024-10-24 12:55:30,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 83 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-10-24 12:55:30,062 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 46 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 30 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2024-10-24 12:55:30,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 878 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 555 Invalid, 8 Unknown, 0 Unchecked, 33.7s Time] [2024-10-24 12:55:30,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-10-24 12:55:30,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 360. [2024-10-24 12:55:30,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 238 states have (on average 1.1512605042016806) internal successors, (274), 248 states have internal predecessors, (274), 80 states have call successors, (80), 37 states have call predecessors, (80), 41 states have return successors, (95), 74 states have call predecessors, (95), 70 states have call successors, (95) [2024-10-24 12:55:30,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 449 transitions. [2024-10-24 12:55:30,103 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 449 transitions. Word has length 86 [2024-10-24 12:55:30,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:55:30,105 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 449 transitions. [2024-10-24 12:55:30,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-24 12:55:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 449 transitions. [2024-10-24 12:55:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 12:55:30,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:55:30,107 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:55:30,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 12:55:30,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 12:55:30,312 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:55:30,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:55:30,313 INFO L85 PathProgramCache]: Analyzing trace with hash 875051464, now seen corresponding path program 1 times [2024-10-24 12:55:30,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:55:30,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345843701] [2024-10-24 12:55:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:30,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:55:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:55:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 12:55:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:55:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:55:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 12:55:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:55:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:55:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 12:55:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-24 12:55:31,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:55:31,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345843701] [2024-10-24 12:55:31,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345843701] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:55:31,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087725461] [2024-10-24 12:55:31,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:31,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:55:31,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:55:31,269 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:55:31,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 12:55:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:31,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 12:55:31,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:55:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-24 12:55:31,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:55:31,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087725461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:55:31,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:55:31,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 14 [2024-10-24 12:55:31,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340023084] [2024-10-24 12:55:31,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:55:31,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:55:31,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:55:31,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:55:31,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:55:31,760 INFO L87 Difference]: Start difference. First operand 360 states and 449 transitions. Second operand has 11 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10)