./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_copy_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 d7c0f5b67426dc3769ace794e9c8c036d37ffa3960449e6b59343c653ea0c545 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:51:33,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:51:33,865 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 06:51:33,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:51:33,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:51:33,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:51:33,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:51:33,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:51:33,887 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:51:33,888 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:51:33,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:51:33,888 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:51:33,889 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:51:33,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:51:33,889 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:51:33,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:51:33,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:51:33,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:51:33,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:51:33,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:51:33,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:51:33,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:51:33,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:51:33,890 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:51:33,890 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:51:33,890 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:51:33,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:51:33,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:51:33,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:51:33,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:51:33,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:51:33,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:51:33,891 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:51:33,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:51:33,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:51:33,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:51:33,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:51:33,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:51:33,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:51:33,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:51:33,892 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> d7c0f5b67426dc3769ace794e9c8c036d37ffa3960449e6b59343c653ea0c545 [2025-03-17 06:51:34,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:51:34,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:51:34,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:51:34,127 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:51:34,128 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:51:34,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2025-03-17 06:51:35,246 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/733589cee/4a364dc37517485f9e44f1c9f26faf89/FLAGb99228f2c [2025-03-17 06:51:35,750 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:51:35,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2025-03-17 06:51:35,779 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/733589cee/4a364dc37517485f9e44f1c9f26faf89/FLAGb99228f2c [2025-03-17 06:51:35,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/733589cee/4a364dc37517485f9e44f1c9f26faf89 [2025-03-17 06:51:35,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:51:35,797 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:51:35,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:51:35,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:51:35,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:51:35,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:51:35" (1/1) ... [2025-03-17 06:51:35,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8f1ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:35, skipping insertion in model container [2025-03-17 06:51:35,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:51:35" (1/1) ... [2025-03-17 06:51:35,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:51:36,086 WARN L250 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_array_list_copy_harness.i[4493,4506] [2025-03-17 06:51:36,095 WARN L250 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_array_list_copy_harness.i[4553,4566] [2025-03-17 06:51:36,661 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,662 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,662 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,663 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,663 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,670 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,671 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,672 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,672 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,673 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,674 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,674 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,675 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,958 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,959 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,964 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:36,969 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:51:37,042 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:51:37,052 WARN L250 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_array_list_copy_harness.i[4493,4506] [2025-03-17 06:51:37,053 WARN L250 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_array_list_copy_harness.i[4553,4566] [2025-03-17 06:51:37,111 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,111 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,111 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,111 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,112 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,120 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,121 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,121 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,122 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,123 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,124 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,124 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,124 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,197 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,198 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,198 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,201 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:37,207 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7775-7786] [2025-03-17 06:51:37,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:51:37,370 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:51:37,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37 WrapperNode [2025-03-17 06:51:37,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:51:37,372 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:51:37,372 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:51:37,372 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:51:37,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,501 INFO L138 Inliner]: procedures = 680, calls = 1678, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 718 [2025-03-17 06:51:37,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:51:37,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:51:37,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:51:37,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:51:37,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,520 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,570 INFO L175 MemorySlicer]: Split 313 memory accesses to 5 slices as follows [238, 2, 7, 9, 57]. 76 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 5, 1, 10]. The 241 writes are split as follows [232, 0, 1, 1, 7]. [2025-03-17 06:51:37,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,587 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:51:37,605 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:51:37,605 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:51:37,605 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:51:37,606 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (1/1) ... [2025-03-17 06:51:37,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:51:37,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:51:37,643 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) [2025-03-17 06:51:37,647 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 [2025-03-17 06:51:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:51:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-17 06:51:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-17 06:51:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-17 06:51:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-17 06:51:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 06:51:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2025-03-17 06:51:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 06:51:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 06:51:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 06:51:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 06:51:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 06:51:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:51:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:51:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 06:51:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 06:51:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 06:51:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 06:51:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 06:51:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2025-03-17 06:51:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2025-03-17 06:51:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:51:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:51:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-17 06:51:37,666 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-17 06:51:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-17 06:51:37,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-17 06:51:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 06:51:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 06:51:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 06:51:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 06:51:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 06:51:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2025-03-17 06:51:37,667 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2025-03-17 06:51:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2025-03-17 06:51:37,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2025-03-17 06:51:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:51:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2025-03-17 06:51:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2025-03-17 06:51:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-17 06:51:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-17 06:51:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:51:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 06:51:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 06:51:37,883 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:51:37,884 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:51:37,928 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-17 06:51:37,969 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-17 06:51:37,996 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L267: havoc nondet_uint8_t_#t~nondet10#1; [2025-03-17 06:51:38,005 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2796: havoc #t~ret81;havoc #t~ite83.base, #t~ite83.offset;havoc #t~ret82.base, #t~ret82.offset; [2025-03-17 06:51:38,078 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3268: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-03-17 06:51:38,082 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 06:51:38,098 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2821: havoc #t~ret89.base, #t~ret89.offset; [2025-03-17 06:51:38,105 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7396: havoc #t~ret682.base, #t~ret682.offset; [2025-03-17 06:51:43,250 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7513: havoc aws_array_list_copy_#t~ret750#1;call ULTIMATE.dealloc(aws_array_list_copy_~#copy_size~0#1.base, aws_array_list_copy_~#copy_size~0#1.offset);havoc aws_array_list_copy_~#copy_size~0#1.base, aws_array_list_copy_~#copy_size~0#1.offset; [2025-03-17 06:51:43,251 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7491: havoc aws_array_list_copy_~tmp~2#1.base, aws_array_list_copy_~tmp~2#1.offset; [2025-03-17 06:51:43,321 INFO L? ?]: Removed 92 outVars from TransFormulas that were not future-live. [2025-03-17 06:51:43,321 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:51:43,333 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:51:43,334 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:51:43,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:51:43 BoogieIcfgContainer [2025-03-17 06:51:43,336 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:51:43,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:51:43,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:51:43,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:51:43,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:51:35" (1/3) ... [2025-03-17 06:51:43,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c230b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:51:43, skipping insertion in model container [2025-03-17 06:51:43,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:37" (2/3) ... [2025-03-17 06:51:43,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c230b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:51:43, skipping insertion in model container [2025-03-17 06:51:43,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:51:43" (3/3) ... [2025-03-17 06:51:43,344 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness.i [2025-03-17 06:51:43,356 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:51:43,358 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_copy_harness.i that has 18 procedures, 205 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-17 06:51:43,405 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:51:43,414 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;@3a3486a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:51:43,415 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:51:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 115 states have (on average 1.191304347826087) internal successors, (137), 116 states have internal predecessors, (137), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2025-03-17 06:51:43,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-17 06:51:43,433 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:51:43,434 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:51:43,434 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:51:43,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:51:43,439 INFO L85 PathProgramCache]: Analyzing trace with hash 268356499, now seen corresponding path program 1 times [2025-03-17 06:51:43,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:51:43,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341529802] [2025-03-17 06:51:43,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:43,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:51:47,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:51:48,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:51:48,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:48,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2025-03-17 06:51:48,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:51:48,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341529802] [2025-03-17 06:51:48,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341529802] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:51:48,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173286243] [2025-03-17 06:51:48,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:48,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:51:48,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:51:48,534 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) [2025-03-17 06:51:48,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:51:52,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:51:53,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:51:53,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:53,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:53,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 4369 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:51:53,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:51:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2025-03-17 06:51:53,368 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:51:53,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173286243] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:51:53,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:51:53,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:51:53,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530085823] [2025-03-17 06:51:53,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:51:53,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:51:53,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:51:53,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:51:53,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:51:53,393 INFO L87 Difference]: Start difference. First operand has 205 states, 115 states have (on average 1.191304347826087) internal successors, (137), 116 states have internal predecessors, (137), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-03-17 06:51:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:51:53,442 INFO L93 Difference]: Finished difference Result 407 states and 596 transitions. [2025-03-17 06:51:53,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:51:53,444 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 144 [2025-03-17 06:51:53,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:51:53,451 INFO L225 Difference]: With dead ends: 407 [2025-03-17 06:51:53,453 INFO L226 Difference]: Without dead ends: 202 [2025-03-17 06:51:53,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:51:53,462 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:51:53,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:51:53,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-03-17 06:51:53,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2025-03-17 06:51:53,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 113 states have (on average 1.176991150442478) internal successors, (133), 114 states have internal predecessors, (133), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2025-03-17 06:51:53,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 274 transitions. [2025-03-17 06:51:53,523 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 274 transitions. Word has length 144 [2025-03-17 06:51:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:51:53,525 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 274 transitions. [2025-03-17 06:51:53,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-03-17 06:51:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 274 transitions. [2025-03-17 06:51:53,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-17 06:51:53,529 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:51:53,529 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:51:53,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 06:51:53,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 06:51:53,730 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:51:53,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:51:53,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1431129283, now seen corresponding path program 1 times [2025-03-17 06:51:53,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:51:53,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841547092] [2025-03-17 06:51:53,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:53,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:51:57,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:51:57,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:51:57,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:57,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2025-03-17 06:51:58,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:51:58,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841547092] [2025-03-17 06:51:58,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841547092] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:51:58,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835063025] [2025-03-17 06:51:58,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:58,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:51:58,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:51:58,870 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) [2025-03-17 06:51:58,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:52:02,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:52:03,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:52:03,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:03,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:03,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 4369 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:52:03,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:52:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-03-17 06:52:03,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:52:03,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835063025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:52:03,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:52:03,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-17 06:52:03,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566680563] [2025-03-17 06:52:03,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:52:03,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:52:03,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:52:03,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:52:03,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:52:03,878 INFO L87 Difference]: Start difference. First operand 202 states and 274 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-03-17 06:52:05,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:52:05,039 INFO L93 Difference]: Finished difference Result 400 states and 553 transitions. [2025-03-17 06:52:05,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:52:05,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 144 [2025-03-17 06:52:05,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:52:05,044 INFO L225 Difference]: With dead ends: 400 [2025-03-17 06:52:05,044 INFO L226 Difference]: Without dead ends: 204 [2025-03-17 06:52:05,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:52:05,046 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 54 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 06:52:05,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 885 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 06:52:05,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-03-17 06:52:05,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2025-03-17 06:52:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 114 states have (on average 1.1754385964912282) internal successors, (134), 116 states have internal predecessors, (134), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2025-03-17 06:52:05,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 287 transitions. [2025-03-17 06:52:05,068 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 287 transitions. Word has length 144 [2025-03-17 06:52:05,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:52:05,068 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 287 transitions. [2025-03-17 06:52:05,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-03-17 06:52:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 287 transitions. [2025-03-17 06:52:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-17 06:52:05,071 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:52:05,071 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:52:05,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 06:52:05,272 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,SelfDestructingSolverStorable1 [2025-03-17 06:52:05,272 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:52:05,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:52:05,273 INFO L85 PathProgramCache]: Analyzing trace with hash -164162996, now seen corresponding path program 1 times [2025-03-17 06:52:05,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:52:05,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880189907] [2025-03-17 06:52:05,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:05,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:52:09,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-17 06:52:09,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-17 06:52:09,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:09,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2025-03-17 06:52:10,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:52:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880189907] [2025-03-17 06:52:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880189907] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:52:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588085071] [2025-03-17 06:52:10,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:10,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:52:10,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:52:10,191 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) [2025-03-17 06:52:10,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:52:14,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-17 06:52:14,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-17 06:52:14,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:14,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:14,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 4496 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:52:14,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:52:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2025-03-17 06:52:15,220 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:52:15,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588085071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:52:15,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:52:15,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-17 06:52:15,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159691506] [2025-03-17 06:52:15,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:52:15,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:52:15,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:52:15,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:52:15,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:52:15,222 INFO L87 Difference]: Start difference. First operand 204 states and 287 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-03-17 06:52:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:52:16,237 INFO L93 Difference]: Finished difference Result 376 states and 526 transitions. [2025-03-17 06:52:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:52:16,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 159 [2025-03-17 06:52:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:52:16,239 INFO L225 Difference]: With dead ends: 376 [2025-03-17 06:52:16,239 INFO L226 Difference]: Without dead ends: 204 [2025-03-17 06:52:16,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:52:16,243 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 52 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:52:16,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 894 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 06:52:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-03-17 06:52:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2025-03-17 06:52:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 114 states have (on average 1.1754385964912282) internal successors, (134), 116 states have internal predecessors, (134), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2025-03-17 06:52:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 285 transitions. [2025-03-17 06:52:16,257 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 285 transitions. Word has length 159 [2025-03-17 06:52:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:52:16,257 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 285 transitions. [2025-03-17 06:52:16,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-03-17 06:52:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 285 transitions. [2025-03-17 06:52:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-17 06:52:16,259 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:52:16,259 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:52:16,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 06:52:16,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:52:16,460 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:52:16,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:52:16,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2063686935, now seen corresponding path program 2 times [2025-03-17 06:52:16,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:52:16,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820769636] [2025-03-17 06:52:16,460 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:52:16,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:52:20,314 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 174 statements into 2 equivalence classes. [2025-03-17 06:52:20,398 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 32 of 174 statements. [2025-03-17 06:52:20,399 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:52:20,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2025-03-17 06:52:21,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:52:21,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820769636] [2025-03-17 06:52:21,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820769636] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:52:21,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:52:21,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:52:21,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251084238] [2025-03-17 06:52:21,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:52:21,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:52:21,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:52:21,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:52:21,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:52:21,097 INFO L87 Difference]: Start difference. First operand 204 states and 285 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-17 06:52:21,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:52:21,283 INFO L93 Difference]: Finished difference Result 262 states and 360 transitions. [2025-03-17 06:52:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:52:21,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 174 [2025-03-17 06:52:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:52:21,286 INFO L225 Difference]: With dead ends: 262 [2025-03-17 06:52:21,286 INFO L226 Difference]: Without dead ends: 209 [2025-03-17 06:52:21,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:52:21,288 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:52:21,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1078 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 06:52:21,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-03-17 06:52:21,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2025-03-17 06:52:21,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (82), 71 states have call predecessors, (82), 70 states have call successors, (82) [2025-03-17 06:52:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 291 transitions. [2025-03-17 06:52:21,305 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 291 transitions. Word has length 174 [2025-03-17 06:52:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:52:21,306 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 291 transitions. [2025-03-17 06:52:21,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-17 06:52:21,306 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 291 transitions. [2025-03-17 06:52:21,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-03-17 06:52:21,307 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:52:21,307 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:52:21,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:52:21,308 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:52:21,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:52:21,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1065839480, now seen corresponding path program 1 times [2025-03-17 06:52:21,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:52:21,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72930536] [2025-03-17 06:52:21,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:21,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:52:24,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-17 06:52:24,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-17 06:52:25,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:25,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-03-17 06:52:26,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:52:26,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72930536] [2025-03-17 06:52:26,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72930536] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:52:26,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895768873] [2025-03-17 06:52:26,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:26,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:52:26,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:52:26,149 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) [2025-03-17 06:52:26,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 06:52:30,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-17 06:52:30,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-17 06:52:30,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:30,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:30,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 4623 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:52:30,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:52:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-03-17 06:52:31,782 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:52:31,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895768873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:52:31,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:52:31,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-03-17 06:52:31,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290679689] [2025-03-17 06:52:31,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:52:31,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:52:31,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:52:31,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:52:31,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:52:31,783 INFO L87 Difference]: Start difference. First operand 209 states and 291 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-03-17 06:52:33,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:52:33,115 INFO L93 Difference]: Finished difference Result 375 states and 517 transitions. [2025-03-17 06:52:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:52:33,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 179 [2025-03-17 06:52:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:52:33,117 INFO L225 Difference]: With dead ends: 375 [2025-03-17 06:52:33,117 INFO L226 Difference]: Without dead ends: 209 [2025-03-17 06:52:33,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:52:33,119 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 80 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:52:33,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1088 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 06:52:33,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-03-17 06:52:33,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2025-03-17 06:52:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (77), 71 states have call predecessors, (77), 70 states have call successors, (77) [2025-03-17 06:52:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 286 transitions. [2025-03-17 06:52:33,129 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 286 transitions. Word has length 179 [2025-03-17 06:52:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:52:33,129 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 286 transitions. [2025-03-17 06:52:33,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-03-17 06:52:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 286 transitions. [2025-03-17 06:52:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2025-03-17 06:52:33,131 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:52:33,131 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:52:33,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 06:52:33,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:52:33,332 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:52:33,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:52:33,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1810844135, now seen corresponding path program 1 times [2025-03-17 06:52:33,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:52:33,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201731797] [2025-03-17 06:52:33,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:33,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:52:36,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 193 statements into 1 equivalence classes. [2025-03-17 06:52:36,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 193 of 193 statements. [2025-03-17 06:52:36,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:36,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2025-03-17 06:52:38,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:52:38,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201731797] [2025-03-17 06:52:38,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201731797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:52:38,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:52:38,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:52:38,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963322460] [2025-03-17 06:52:38,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:52:38,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:52:38,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:52:38,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:52:38,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:52:38,045 INFO L87 Difference]: Start difference. First operand 209 states and 286 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-17 06:52:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:52:39,246 INFO L93 Difference]: Finished difference Result 372 states and 502 transitions. [2025-03-17 06:52:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:52:39,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 193 [2025-03-17 06:52:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:52:39,249 INFO L225 Difference]: With dead ends: 372 [2025-03-17 06:52:39,249 INFO L226 Difference]: Without dead ends: 207 [2025-03-17 06:52:39,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:52:39,251 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 79 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 06:52:39,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1101 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 06:52:39,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2025-03-17 06:52:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2025-03-17 06:52:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 117 states have (on average 1.1623931623931625) internal successors, (136), 118 states have internal predecessors, (136), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2025-03-17 06:52:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 279 transitions. [2025-03-17 06:52:39,269 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 279 transitions. Word has length 193 [2025-03-17 06:52:39,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:52:39,270 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 279 transitions. [2025-03-17 06:52:39,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-17 06:52:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 279 transitions. [2025-03-17 06:52:39,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2025-03-17 06:52:39,273 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:52:39,273 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:52:39,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:52:39,274 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:52:39,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:52:39,274 INFO L85 PathProgramCache]: Analyzing trace with hash 298448628, now seen corresponding path program 1 times [2025-03-17 06:52:39,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:52:39,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866373267] [2025-03-17 06:52:39,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:39,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:52:42,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 208 statements into 1 equivalence classes. [2025-03-17 06:52:42,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 208 of 208 statements. [2025-03-17 06:52:42,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:42,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2025-03-17 06:52:45,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:52:45,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866373267] [2025-03-17 06:52:45,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866373267] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:52:45,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:52:45,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:52:45,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561981747] [2025-03-17 06:52:45,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:52:45,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 06:52:45,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:52:45,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 06:52:45,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:52:45,946 INFO L87 Difference]: Start difference. First operand 207 states and 279 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 6 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2025-03-17 06:52:50,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:52:54,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:52:58,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:53:03,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:53:07,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers []