./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_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_priority_queue_s_sift_down_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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 07:21:40,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 07:21:40,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 07:21:40,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 07:21:40,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 07:21:40,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 07:21:40,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 07:21:40,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 07:21:40,212 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 07:21:40,212 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 07:21:40,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 07:21:40,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 07:21:40,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 07:21:40,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 07:21:40,212 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 07:21:40,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 07:21:40,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 07:21:40,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 07:21:40,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 07:21:40,213 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:21:40,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 07:21:40,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 07:21:40,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 07:21:40,215 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 07:21:40,215 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 07:21:40,215 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 07:21:40,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 07:21:40,215 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 -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2025-03-17 07:21:40,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 07:21:40,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 07:21:40,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 07:21:40,445 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 07:21:40,446 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 07:21:40,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2025-03-17 07:21:41,691 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2843855/0806801c0db24a14ab1904c1b9819f6e/FLAG1199e0722 [2025-03-17 07:21:42,146 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 07:21:42,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2025-03-17 07:21:42,183 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2843855/0806801c0db24a14ab1904c1b9819f6e/FLAG1199e0722 [2025-03-17 07:21:42,279 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2843855/0806801c0db24a14ab1904c1b9819f6e [2025-03-17 07:21:42,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 07:21:42,283 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 07:21:42,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 07:21:42,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 07:21:42,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 07:21:42,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:21:42" (1/1) ... [2025-03-17 07:21:42,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762a5b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:42, skipping insertion in model container [2025-03-17 07:21:42,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:21:42" (1/1) ... [2025-03-17 07:21:42,346 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 07:21:42,557 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_priority_queue_s_sift_down_harness.i[4504,4517] [2025-03-17 07:21:42,565 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_priority_queue_s_sift_down_harness.i[4564,4577] [2025-03-17 07:21:43,086 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,087 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,087 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,088 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,088 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,099 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,099 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,100 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,101 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,103 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,103 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,104 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,104 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,463 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,464 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,473 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,482 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,551 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,552 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,552 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,553 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,553 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,554 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,554 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,555 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,555 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,555 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,555 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,555 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,556 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,560 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,561 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,561 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,561 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,564 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,564 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,571 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,571 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,571 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:21:43,623 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 07:21:43,640 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_priority_queue_s_sift_down_harness.i[4504,4517] [2025-03-17 07:21:43,640 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_priority_queue_s_sift_down_harness.i[4564,4577] [2025-03-17 07:21:43,674 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,675 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,675 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,676 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,677 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,683 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,684 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,684 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,684 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,685 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,685 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,685 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,686 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,755 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,756 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,757 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,760 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,767 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2025-03-17 07:21:43,826 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,826 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,827 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,827 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,827 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,828 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,828 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,829 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,829 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,829 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,829 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,829 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,829 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,830 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,830 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,830 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,830 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,832 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,832 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,836 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,836 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,837 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:21:43,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:21:43,998 INFO L204 MainTranslator]: Completed translation [2025-03-17 07:21:44,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43 WrapperNode [2025-03-17 07:21:44,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 07:21:44,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 07:21:44,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 07:21:44,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 07:21:44,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,079 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,137 INFO L138 Inliner]: procedures = 686, calls = 1900, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 845 [2025-03-17 07:21:44,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 07:21:44,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 07:21:44,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 07:21:44,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 07:21:44,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,159 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,227 INFO L175 MemorySlicer]: Split 342 memory accesses to 6 slices as follows [238, 2, 15, 66, 18, 3]. 70 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [6, 2, 4, 0, 5, 1]. The 259 writes are split as follows [232, 0, 3, 17, 6, 1]. [2025-03-17 07:21:44,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,277 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 07:21:44,316 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 07:21:44,316 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 07:21:44,316 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 07:21:44,317 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (1/1) ... [2025-03-17 07:21:44,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:21:44,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:21:44,343 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 07:21:44,346 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 07:21:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2025-03-17 07:21:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2025-03-17 07:21:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-03-17 07:21:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-03-17 07:21:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 07:21:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-17 07:21:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-17 07:21:44,365 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 07:21:44,365 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 07:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 07:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 07:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 07:21:44,366 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 07:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 07:21:44,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 07:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 07:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 07:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 07:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 07:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 07:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 07:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 07:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-17 07:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2025-03-17 07:21:44,367 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2025-03-17 07:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 07:21:44,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 07:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-17 07:21:44,368 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-17 07:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-03-17 07:21:44,368 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-03-17 07:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-17 07:21:44,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-17 07:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 07:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 07:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 07:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 07:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 07:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-17 07:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2025-03-17 07:21:44,368 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2025-03-17 07:21:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-03-17 07:21:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 07:21:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2025-03-17 07:21:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2025-03-17 07:21:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2025-03-17 07:21:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-17 07:21:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-17 07:21:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-17 07:21:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2025-03-17 07:21:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2025-03-17 07:21:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 07:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 07:21:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 07:21:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 07:21:44,631 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 07:21:44,632 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 07:21:44,681 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6935: havoc #t~malloc583.base, #t~malloc583.offset; [2025-03-17 07:21:44,685 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-03-17 07:21:44,725 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2590: havoc #t~ret57#1; [2025-03-17 07:21:44,765 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L267: havoc nondet_uint8_t_#t~nondet10#1; [2025-03-17 07:21:44,774 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: havoc #t~ret587;havoc #t~ite589.base, #t~ite589.offset;havoc #t~ret588.base, #t~ret588.offset; [2025-03-17 07:21:44,947 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8277: havoc aws_priority_queue_backpointers_valid_#t~ret875#1;havoc aws_priority_queue_backpointers_valid_#t~short876#1; [2025-03-17 07:21:45,025 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2944: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-03-17 07:21:45,032 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 07:21:45,050 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8191: havoc ~node~1.base, ~node~1.offset; [2025-03-17 07:21:45,073 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L262: havoc nondet_int_#t~nondet5#1; [2025-03-17 07:21:45,073 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7268: havoc nondet_compare_#t~ret668#1; [2025-03-17 07:21:45,090 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3203: havoc #t~ret243; [2025-03-17 07:21:45,100 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7397: havoc #t~ret682.base, #t~ret682.offset; [2025-03-17 07:21:50,330 INFO L? ?]: Removed 197 outVars from TransFormulas that were not future-live. [2025-03-17 07:21:50,331 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 07:21:50,348 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 07:21:50,348 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 07:21:50,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:21:50 BoogieIcfgContainer [2025-03-17 07:21:50,349 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 07:21:50,354 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 07:21:50,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 07:21:50,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 07:21:50,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:21:42" (1/3) ... [2025-03-17 07:21:50,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d65b0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:21:50, skipping insertion in model container [2025-03-17 07:21:50,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:43" (2/3) ... [2025-03-17 07:21:50,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d65b0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:21:50, skipping insertion in model container [2025-03-17 07:21:50,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:21:50" (3/3) ... [2025-03-17 07:21:50,361 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2025-03-17 07:21:50,376 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 07:21:50,377 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_s_sift_down_harness.i that has 24 procedures, 315 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-03-17 07:21:50,434 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 07:21:50,445 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;@25be3ab3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 07:21:50,445 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 07:21:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 315 states, 186 states have (on average 1.2311827956989247) internal successors, (229), 187 states have internal predecessors, (229), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 07:21:50,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-17 07:21:50,466 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:21:50,467 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:21:50,467 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:21:50,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:21:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1378572032, now seen corresponding path program 1 times [2025-03-17 07:21:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:21:50,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940068976] [2025-03-17 07:21:50,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:21:50,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:21:54,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 07:21:55,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 07:21:55,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:21:55,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:21:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2025-03-17 07:21:55,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:21:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940068976] [2025-03-17 07:21:55,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940068976] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:21:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409539554] [2025-03-17 07:21:55,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:21:55,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:21:55,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:21:55,774 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 07:21:55,776 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 07:21:59,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 07:22:00,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 07:22:00,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:22:00,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:22:00,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 4491 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 07:22:00,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:22:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2025-03-17 07:22:00,484 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:22:00,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409539554] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:22:00,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:22:00,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 07:22:00,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187764303] [2025-03-17 07:22:00,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:22:00,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 07:22:00,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:22:00,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 07:22:00,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 07:22:00,508 INFO L87 Difference]: Start difference. First operand has 315 states, 186 states have (on average 1.2311827956989247) internal successors, (229), 187 states have internal predecessors, (229), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-17 07:22:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:22:00,555 INFO L93 Difference]: Finished difference Result 609 states and 908 transitions. [2025-03-17 07:22:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 07:22:00,558 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 153 [2025-03-17 07:22:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:22:00,569 INFO L225 Difference]: With dead ends: 609 [2025-03-17 07:22:00,570 INFO L226 Difference]: Without dead ends: 312 [2025-03-17 07:22:00,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 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 07:22:00,579 INFO L435 NwaCegarLoop]: 433 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, 433 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 07:22:00,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:22:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2025-03-17 07:22:00,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2025-03-17 07:22:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 184 states have (on average 1.2119565217391304) internal successors, (223), 185 states have internal predecessors, (223), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2025-03-17 07:22:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 430 transitions. [2025-03-17 07:22:00,652 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 430 transitions. Word has length 153 [2025-03-17 07:22:00,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:22:00,653 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 430 transitions. [2025-03-17 07:22:00,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-17 07:22:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 430 transitions. [2025-03-17 07:22:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-17 07:22:00,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:22:00,657 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:22:00,672 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 07:22:00,857 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 07:22:00,858 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:22:00,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:22:00,859 INFO L85 PathProgramCache]: Analyzing trace with hash 799540417, now seen corresponding path program 1 times [2025-03-17 07:22:00,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:22:00,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838141614] [2025-03-17 07:22:00,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:22:00,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:22:04,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 07:22:04,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 07:22:04,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:22:04,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:22:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2025-03-17 07:22:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:22:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838141614] [2025-03-17 07:22:05,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838141614] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:22:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848520067] [2025-03-17 07:22:05,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:22:05,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:22:05,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:22:05,619 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 07:22:05,621 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 07:22:09,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 07:22:10,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 07:22:10,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:22:10,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:22:10,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 4491 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 07:22:10,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:22:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-03-17 07:22:11,023 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:22:11,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848520067] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:22:11,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:22:11,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-17 07:22:11,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721425651] [2025-03-17 07:22:11,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:22:11,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 07:22:11,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:22:11,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 07:22:11,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 07:22:11,026 INFO L87 Difference]: Start difference. First operand 312 states and 430 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2025-03-17 07:22:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:22:11,797 INFO L93 Difference]: Finished difference Result 581 states and 805 transitions. [2025-03-17 07:22:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 07:22:11,798 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 153 [2025-03-17 07:22:11,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:22:11,807 INFO L225 Difference]: With dead ends: 581 [2025-03-17 07:22:11,807 INFO L226 Difference]: Without dead ends: 314 [2025-03-17 07:22:11,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 07:22:11,810 INFO L435 NwaCegarLoop]: 411 mSDtfsCounter, 22 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 07:22:11,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1588 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 07:22:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2025-03-17 07:22:11,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2025-03-17 07:22:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 185 states have (on average 1.2108108108108109) internal successors, (224), 187 states have internal predecessors, (224), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2025-03-17 07:22:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 435 transitions. [2025-03-17 07:22:11,843 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 435 transitions. Word has length 153 [2025-03-17 07:22:11,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:22:11,843 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 435 transitions. [2025-03-17 07:22:11,843 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2025-03-17 07:22:11,843 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 435 transitions. [2025-03-17 07:22:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-17 07:22:11,847 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:22:11,847 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:22:11,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 07:22:12,048 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 07:22:12,048 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:22:12,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:22:12,049 INFO L85 PathProgramCache]: Analyzing trace with hash -393366915, now seen corresponding path program 1 times [2025-03-17 07:22:12,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:22:12,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561458436] [2025-03-17 07:22:12,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:22:12,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:22:15,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-17 07:22:15,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-17 07:22:15,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:22:15,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:22:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2025-03-17 07:22:17,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:22:17,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561458436] [2025-03-17 07:22:17,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561458436] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:22:17,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530121049] [2025-03-17 07:22:17,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:22:17,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:22:17,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:22:17,107 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 07:22:17,109 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 07:22:21,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-17 07:22:21,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-17 07:22:21,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:22:21,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:22:21,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 4541 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 07:22:21,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:22:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-03-17 07:22:22,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:22:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530121049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:22:22,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:22:22,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-17 07:22:22,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284959891] [2025-03-17 07:22:22,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:22:22,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 07:22:22,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:22:22,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 07:22:22,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-17 07:22:22,749 INFO L87 Difference]: Start difference. First operand 314 states and 435 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2025-03-17 07:22:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:22:25,058 INFO L93 Difference]: Finished difference Result 604 states and 852 transitions. [2025-03-17 07:22:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 07:22:25,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 161 [2025-03-17 07:22:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:22:25,062 INFO L225 Difference]: With dead ends: 604 [2025-03-17 07:22:25,062 INFO L226 Difference]: Without dead ends: 335 [2025-03-17 07:22:25,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-17 07:22:25,064 INFO L435 NwaCegarLoop]: 396 mSDtfsCounter, 49 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 07:22:25,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 2290 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 07:22:25,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2025-03-17 07:22:25,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2025-03-17 07:22:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 201 states have (on average 1.2238805970149254) internal successors, (246), 203 states have internal predecessors, (246), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2025-03-17 07:22:25,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 472 transitions. [2025-03-17 07:22:25,090 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 472 transitions. Word has length 161 [2025-03-17 07:22:25,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:22:25,091 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 472 transitions. [2025-03-17 07:22:25,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2025-03-17 07:22:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 472 transitions. [2025-03-17 07:22:25,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-17 07:22:25,093 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:22:25,093 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 07:22:25,111 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 07:22:25,294 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 07:22:25,294 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:22:25,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:22:25,295 INFO L85 PathProgramCache]: Analyzing trace with hash 710274473, now seen corresponding path program 1 times [2025-03-17 07:22:25,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:22:25,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608130966] [2025-03-17 07:22:25,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:22:25,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:22:28,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-17 07:22:28,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-17 07:22:28,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:22:28,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:22:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-03-17 07:22:30,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:22:30,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608130966] [2025-03-17 07:22:30,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608130966] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:22:30,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228241925] [2025-03-17 07:22:30,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:22:30,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:22:30,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:22:30,149 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 07:22:30,150 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 07:22:34,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-17 07:22:34,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-17 07:22:34,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:22:34,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:22:34,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 4668 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 07:22:34,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:22:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-03-17 07:22:35,676 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:22:35,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228241925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:22:35,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:22:35,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-03-17 07:22:35,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131756332] [2025-03-17 07:22:35,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:22:35,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 07:22:35,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:22:35,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 07:22:35,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-17 07:22:35,678 INFO L87 Difference]: Start difference. First operand 333 states and 472 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2025-03-17 07:22:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:22:36,884 INFO L93 Difference]: Finished difference Result 627 states and 896 transitions. [2025-03-17 07:22:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 07:22:36,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 176 [2025-03-17 07:22:36,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:22:36,889 INFO L225 Difference]: With dead ends: 627 [2025-03-17 07:22:36,890 INFO L226 Difference]: Without dead ends: 339 [2025-03-17 07:22:36,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-17 07:22:36,893 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 39 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 07:22:36,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1940 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 07:22:36,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2025-03-17 07:22:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2025-03-17 07:22:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 201 states have (on average 1.2238805970149254) internal successors, (246), 203 states have internal predecessors, (246), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2025-03-17 07:22:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 472 transitions. [2025-03-17 07:22:36,917 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 472 transitions. Word has length 176 [2025-03-17 07:22:36,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:22:36,918 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 472 transitions. [2025-03-17 07:22:36,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2025-03-17 07:22:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 472 transitions. [2025-03-17 07:22:36,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-03-17 07:22:36,920 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:22:36,920 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:36,939 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 07:22:37,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:22:37,121 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:22:37,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:22:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1827719615, now seen corresponding path program 1 times [2025-03-17 07:22:37,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:22:37,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774296988] [2025-03-17 07:22:37,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:22:37,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:22:40,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-17 07:22:40,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-17 07:22:40,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:22:40,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:22:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2025-03-17 07:22:42,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:22:42,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774296988] [2025-03-17 07:22:42,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774296988] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:22:42,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443136109] [2025-03-17 07:22:42,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:22:42,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:22:42,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:22:42,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:22:42,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 07:22:46,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-17 07:22:46,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-17 07:22:46,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:22:46,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:22:46,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 4740 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 07:22:46,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:22:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2025-03-17 07:22:48,396 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:22:48,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443136109] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:22:48,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:22:48,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2025-03-17 07:22:48,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664085714] [2025-03-17 07:22:48,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:22:48,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 07:22:48,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:22:48,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 07:22:48,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-03-17 07:22:48,398 INFO L87 Difference]: Start difference. First operand 333 states and 472 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2025-03-17 07:22:51,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:22:51,460 INFO L93 Difference]: Finished difference Result 638 states and 910 transitions. [2025-03-17 07:22:51,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 07:22:51,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 192 [2025-03-17 07:22:51,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:22:51,463 INFO L225 Difference]: With dead ends: 638 [2025-03-17 07:22:51,463 INFO L226 Difference]: Without dead ends: 350 [2025-03-17 07:22:51,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2025-03-17 07:22:51,465 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 74 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-17 07:22:51,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 2608 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-17 07:22:51,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2025-03-17 07:22:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 333. [2025-03-17 07:22:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 201 states have (on average 1.2238805970149254) internal successors, (246), 203 states have internal predecessors, (246), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2025-03-17 07:22:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 472 transitions. [2025-03-17 07:22:51,482 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 472 transitions. Word has length 192 [2025-03-17 07:22:51,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:22:51,483 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 472 transitions. [2025-03-17 07:22:51,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2025-03-17 07:22:51,483 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 472 transitions. [2025-03-17 07:22:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2025-03-17 07:22:51,485 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:22:51,485 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 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 07:22:51,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 07:22:51,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:22:51,686 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:22:51,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:22:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1246771953, now seen corresponding path program 2 times [2025-03-17 07:22:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:22:51,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159925663] [2025-03-17 07:22:51,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 07:22:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:22:55,117 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 207 statements into 2 equivalence classes. [2025-03-17 07:22:55,443 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 207 of 207 statements. [2025-03-17 07:22:55,444 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 07:22:55,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:22:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2025-03-17 07:22:56,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:22:56,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159925663] [2025-03-17 07:22:56,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159925663] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:22:56,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 07:22:56,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 07:22:56,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884579248] [2025-03-17 07:22:56,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:22:56,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 07:22:56,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:22:56,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 07:22:56,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 07:22:56,619 INFO L87 Difference]: Start difference. First operand 333 states and 472 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2025-03-17 07:22:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:22:58,196 INFO L93 Difference]: Finished difference Result 589 states and 845 transitions. [2025-03-17 07:22:58,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 07:22:58,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 207 [2025-03-17 07:22:58,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:22:58,201 INFO L225 Difference]: With dead ends: 589 [2025-03-17 07:22:58,201 INFO L226 Difference]: Without dead ends: 335 [2025-03-17 07:22:58,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 07:22:58,203 INFO L435 NwaCegarLoop]: 408 mSDtfsCounter, 61 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 07:22:58,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2332 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 07:22:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2025-03-17 07:22:58,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2025-03-17 07:22:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 202 states have (on average 1.2227722772277227) internal successors, (247), 205 states have internal predecessors, (247), 106 states have call successors, (106), 23 states have call predecessors, (106), 26 states have return successors, (122), 106 states have call predecessors, (122), 105 states have call successors, (122) [2025-03-17 07:22:58,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 475 transitions. [2025-03-17 07:22:58,221 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 475 transitions. Word has length 207 [2025-03-17 07:22:58,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:22:58,222 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 475 transitions. [2025-03-17 07:22:58,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2025-03-17 07:22:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 475 transitions. [2025-03-17 07:22:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-03-17 07:22:58,224 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:22:58,225 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 07:22:58,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 07:22:58,225 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:22:58,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:22:58,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1551429587, now seen corresponding path program 1 times [2025-03-17 07:22:58,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:22:58,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191522317] [2025-03-17 07:22:58,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:22:58,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:23:02,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-03-17 07:23:02,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-03-17 07:23:02,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:23:02,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:23:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2025-03-17 07:23:03,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:23:03,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191522317] [2025-03-17 07:23:03,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191522317] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:23:03,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538059873] [2025-03-17 07:23:03,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:23:03,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:23:03,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:23:03,830 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:23:03,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 07:23:08,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-03-17 07:23:09,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-03-17 07:23:09,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:23:09,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:23:09,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 4917 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 07:23:09,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:23:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2025-03-17 07:23:11,079 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:23:11,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538059873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:23:11,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:23:11,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2025-03-17 07:23:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076794845] [2025-03-17 07:23:11,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:23:11,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 07:23:11,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:23:11,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 07:23:11,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2025-03-17 07:23:11,081 INFO L87 Difference]: Start difference. First operand 335 states and 475 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29)