./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_clear_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 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:51:18,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:51:18,164 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 06:51:18,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:51:18,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:51:18,192 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:51:18,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:51:18,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:51:18,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:51:18,194 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:51:18,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:51:18,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:51:18,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:51:18,195 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:51:18,195 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:51:18,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:51:18,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:51:18,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:51:18,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:51:18,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:51:18,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:51:18,196 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:51:18,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:51:18,196 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:51:18,196 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:51:18,196 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:51:18,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:51:18,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:51:18,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:51:18,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:51:18,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:51:18,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:51:18,197 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:51:18,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:51:18,197 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:51:18,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:51:18,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:51:18,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:51:18,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:51:18,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:51:18,197 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 -> 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 [2025-03-17 06:51:18,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:51:18,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:51:18,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:51:18,454 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:51:18,454 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:51:18,455 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2025-03-17 06:51:19,626 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b614545c8/aabaeb1913a24351923b5c3f53ac71d2/FLAGea1c4995f [2025-03-17 06:51:20,117 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:51:20,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2025-03-17 06:51:20,140 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b614545c8/aabaeb1913a24351923b5c3f53ac71d2/FLAGea1c4995f [2025-03-17 06:51:20,226 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b614545c8/aabaeb1913a24351923b5c3f53ac71d2 [2025-03-17 06:51:20,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:51:20,229 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:51:20,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:51:20,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:51:20,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:51:20,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:51:20" (1/1) ... [2025-03-17 06:51:20,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642b2fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:20, skipping insertion in model container [2025-03-17 06:51:20,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:51:20" (1/1) ... [2025-03-17 06:51:20,312 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:51:20,535 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4494,4507] [2025-03-17 06:51:20,542 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4554,4567] [2025-03-17 06:51:21,177 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,177 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,178 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,178 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,179 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,187 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,188 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,189 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,190 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,191 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,191 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,192 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,192 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,644 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,650 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:51:21,722 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:51:21,736 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4494,4507] [2025-03-17 06:51:21,737 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4554,4567] [2025-03-17 06:51:21,792 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,793 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,793 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,794 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,794 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,802 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,803 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,803 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,804 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,804 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,804 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,805 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,805 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,866 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,871 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:21,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7529-7540] [2025-03-17 06:51:21,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:51:22,105 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:51:22,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22 WrapperNode [2025-03-17 06:51:22,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:51:22,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:51:22,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:51:22,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:51:22,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,265 INFO L138 Inliner]: procedures = 679, calls = 1574, calls flagged for inlining = 46, calls inlined = 6, statements flattened = 584 [2025-03-17 06:51:22,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:51:22,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:51:22,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:51:22,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:51:22,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,333 INFO L175 MemorySlicer]: Split 291 memory accesses to 6 slices as follows [2, 238, 3, 5, 34, 9]. 82 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [2, 6, 1, 5, 5, 5]. The 237 writes are split as follows [0, 232, 1, 0, 4, 0]. [2025-03-17 06:51:22,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,373 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:51:22,394 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:51:22,395 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:51:22,395 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:51:22,396 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (1/1) ... [2025-03-17 06:51:22,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:51:22,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:51:22,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 06:51:22,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 06:51:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:51:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-17 06:51:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-17 06:51:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 06:51:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 06:51:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 06:51:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 06:51:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:51:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-17 06:51:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-17 06:51:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:51:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clear [2025-03-17 06:51:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clear [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 06:51:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-17 06:51:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-17 06:51:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 06:51:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 06:51:22,716 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:51:22,718 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:51:22,774 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-17 06:51:22,849 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-17 06:51:22,924 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3268: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-03-17 06:51:22,929 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 06:51:28,236 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2025-03-17 06:51:28,236 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:51:28,247 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:51:28,249 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:51:28,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:51:28 BoogieIcfgContainer [2025-03-17 06:51:28,250 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:51:28,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:51:28,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:51:28,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:51:28,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:51:20" (1/3) ... [2025-03-17 06:51:28,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3c7ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:51:28, skipping insertion in model container [2025-03-17 06:51:28,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:22" (2/3) ... [2025-03-17 06:51:28,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3c7ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:51:28, skipping insertion in model container [2025-03-17 06:51:28,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:51:28" (3/3) ... [2025-03-17 06:51:28,260 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_clear_harness.i [2025-03-17 06:51:28,272 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:51:28,274 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_clear_harness.i that has 12 procedures, 97 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-17 06:51:28,321 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:51:28,332 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;@6572701a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:51:28,332 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:51:28,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 60 states have internal predecessors, (71), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 06:51:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-17 06:51:28,343 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:51:28,344 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:51:28,344 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:51:28,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:51:28,349 INFO L85 PathProgramCache]: Analyzing trace with hash -491994774, now seen corresponding path program 1 times [2025-03-17 06:51:28,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:51:28,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069598600] [2025-03-17 06:51:28,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:28,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:51:33,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-17 06:51:33,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-17 06:51:33,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:33,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 06:51:34,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:51:34,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069598600] [2025-03-17 06:51:34,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069598600] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:51:34,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099464339] [2025-03-17 06:51:34,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:34,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:51:34,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:51:34,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:51:34,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:51:39,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-17 06:51:39,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-17 06:51:39,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:39,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:39,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 4029 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:51:39,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:51:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 06:51:39,825 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:51:39,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099464339] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:51:39,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:51:39,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:51:39,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929058845] [2025-03-17 06:51:39,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:51:39,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:51:39,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:51:39,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:51:39,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:51:39,848 INFO L87 Difference]: Start difference. First operand has 97 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 60 states have internal predecessors, (71), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-17 06:51:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:51:39,869 INFO L93 Difference]: Finished difference Result 188 states and 249 transitions. [2025-03-17 06:51:39,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:51:39,871 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 59 [2025-03-17 06:51:39,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:51:39,876 INFO L225 Difference]: With dead ends: 188 [2025-03-17 06:51:39,877 INFO L226 Difference]: Without dead ends: 94 [2025-03-17 06:51:39,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:51:39,882 INFO L435 NwaCegarLoop]: 119 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, 119 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:51:39,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:51:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-03-17 06:51:39,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2025-03-17 06:51:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 58 states have internal predecessors, (67), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-17 06:51:39,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 116 transitions. [2025-03-17 06:51:39,914 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 116 transitions. Word has length 59 [2025-03-17 06:51:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:51:39,915 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 116 transitions. [2025-03-17 06:51:39,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-17 06:51:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 116 transitions. [2025-03-17 06:51:39,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-17 06:51:39,917 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:51:39,917 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:51:39,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 06:51:40,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 06:51:40,119 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:51:40,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:51:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash -291463288, now seen corresponding path program 1 times [2025-03-17 06:51:40,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:51:40,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156257528] [2025-03-17 06:51:40,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:40,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:51:44,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-17 06:51:44,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-17 06:51:44,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:44,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 06:51:45,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:51:45,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156257528] [2025-03-17 06:51:45,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156257528] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:51:45,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871292354] [2025-03-17 06:51:45,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:45,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:51:45,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:51:45,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:51:45,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:51:50,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-17 06:51:51,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-17 06:51:51,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:51,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:51,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 4029 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:51:51,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:51:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 06:51:51,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:51:51,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871292354] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:51:51,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:51:51,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-17 06:51:51,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753731869] [2025-03-17 06:51:51,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:51:51,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:51:51,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:51:51,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:51:51,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:51:51,863 INFO L87 Difference]: Start difference. First operand 94 states and 116 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-17 06:51:52,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:51:52,665 INFO L93 Difference]: Finished difference Result 157 states and 196 transitions. [2025-03-17 06:51:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:51:52,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 59 [2025-03-17 06:51:52,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:51:52,667 INFO L225 Difference]: With dead ends: 157 [2025-03-17 06:51:52,667 INFO L226 Difference]: Without dead ends: 96 [2025-03-17 06:51:52,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:51:52,668 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 23 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:51:52,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 354 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 06:51:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-03-17 06:51:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-03-17 06:51:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 60 states have internal predecessors, (68), 25 states have call successors, (25), 11 states have call predecessors, (25), 12 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2025-03-17 06:51:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2025-03-17 06:51:52,677 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 59 [2025-03-17 06:51:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:51:52,677 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2025-03-17 06:51:52,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-17 06:51:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2025-03-17 06:51:52,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-17 06:51:52,679 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:51:52,679 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:51:52,694 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 06:51:52,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-17 06:51:52,880 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:51:52,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:51:52,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1434544418, now seen corresponding path program 1 times [2025-03-17 06:51:52,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:51:52,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974396109] [2025-03-17 06:51:52,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:52,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:51:57,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-17 06:51:57,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-17 06:51:57,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:57,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 06:51:59,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:51:59,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974396109] [2025-03-17 06:51:59,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974396109] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:51:59,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401639227] [2025-03-17 06:51:59,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:59,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:51:59,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:51:59,193 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:51:59,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:52:03,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-17 06:52:04,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-17 06:52:04,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:04,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:04,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 4156 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:52:04,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:52:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-17 06:52:05,547 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:52:05,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401639227] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:52:05,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:52:05,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-17 06:52:05,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764689947] [2025-03-17 06:52:05,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:52:05,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:52:05,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:52:05,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:52:05,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:52:05,549 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-17 06:52:06,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:52:06,736 INFO L93 Difference]: Finished difference Result 154 states and 189 transitions. [2025-03-17 06:52:06,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:52:06,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 74 [2025-03-17 06:52:06,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:52:06,738 INFO L225 Difference]: With dead ends: 154 [2025-03-17 06:52:06,738 INFO L226 Difference]: Without dead ends: 94 [2025-03-17 06:52:06,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:52:06,739 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 33 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:52:06,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 528 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 06:52:06,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-03-17 06:52:06,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2025-03-17 06:52:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 58 states have internal predecessors, (66), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-17 06:52:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 115 transitions. [2025-03-17 06:52:06,750 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 115 transitions. Word has length 74 [2025-03-17 06:52:06,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:52:06,750 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 115 transitions. [2025-03-17 06:52:06,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-17 06:52:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 115 transitions. [2025-03-17 06:52:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-17 06:52:06,753 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:52:06,753 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:52:06,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 06:52:06,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:52:06,954 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:52:06,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:52:06,955 INFO L85 PathProgramCache]: Analyzing trace with hash 130902196, now seen corresponding path program 1 times [2025-03-17 06:52:06,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:52:06,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424915169] [2025-03-17 06:52:06,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:06,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:52:11,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-17 06:52:13,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-17 06:52:13,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:13,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-03-17 06:52:20,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:52:20,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424915169] [2025-03-17 06:52:20,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424915169] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:52:20,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986762090] [2025-03-17 06:52:20,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:20,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:52:20,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:52:20,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:52:20,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 06:52:25,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes.