./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_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_clean_up_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 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:51:16,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:51:16,506 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 06:51:16,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:51:16,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:51:16,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:51:16,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:51:16,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:51:16,533 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:51:16,533 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:51:16,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:51:16,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:51:16,533 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:51:16,533 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:51:16,533 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:51:16,534 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:51:16,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:51:16,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:51:16,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:51:16,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:51:16,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:51:16,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:51:16,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:51:16,534 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:51:16,535 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:51:16,535 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:51:16,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:51:16,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:51:16,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:51:16,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:51:16,535 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:51:16,535 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:51:16,535 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:51:16,536 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:51:16,536 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:51:16,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:51:16,536 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:51:16,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:51:16,536 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:51:16,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:51:16,536 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 -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2025-03-17 06:51:16,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:51:16,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:51:16,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:51:16,803 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:51:16,804 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:51:16,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2025-03-17 06:51:17,970 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2353da426/9abfda600d2646cc897a3222300e57dc/FLAG9b4a0b856 [2025-03-17 06:51:18,361 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:51:18,363 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2025-03-17 06:51:18,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2353da426/9abfda600d2646cc897a3222300e57dc/FLAG9b4a0b856 [2025-03-17 06:51:18,409 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2353da426/9abfda600d2646cc897a3222300e57dc [2025-03-17 06:51:18,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:51:18,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:51:18,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:51:18,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:51:18,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:51:18,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:51:18" (1/1) ... [2025-03-17 06:51:18,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eea0f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:18, skipping insertion in model container [2025-03-17 06:51:18,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:51:18" (1/1) ... [2025-03-17 06:51:18,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:51:18,684 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_clean_up_harness.i[4497,4510] [2025-03-17 06:51:18,690 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_clean_up_harness.i[4557,4570] [2025-03-17 06:51:19,174 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,175 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,175 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,176 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,176 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,184 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,184 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,185 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,186 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,187 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,187 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,187 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,188 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,447 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,453 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:51:19,521 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:51:19,531 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_clean_up_harness.i[4497,4510] [2025-03-17 06:51:19,532 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_clean_up_harness.i[4557,4570] [2025-03-17 06:51:19,591 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,591 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,592 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,592 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,592 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,600 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,601 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,602 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,602 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,602 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,603 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,603 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,603 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,662 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,666 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:51:19,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7529-7540] [2025-03-17 06:51:19,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:51:19,836 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:51:19,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19 WrapperNode [2025-03-17 06:51:19,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:51:19,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:51:19,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:51:19,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:51:19,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:19,894 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:19,945 INFO L138 Inliner]: procedures = 679, calls = 1548, calls flagged for inlining = 48, calls inlined = 7, statements flattened = 575 [2025-03-17 06:51:19,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:51:19,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:51:19,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:51:19,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:51:19,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:19,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:19,957 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:20,006 INFO L175 MemorySlicer]: Split 277 memory accesses to 5 slices as follows [2, 28, 238, 3, 6]. 86 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 5, 6, 1, 5]. The 237 writes are split as follows [0, 4, 232, 1, 0]. [2025-03-17 06:51:20,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:20,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:20,066 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:20,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:20,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:20,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:20,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:51:20,093 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:51:20,093 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:51:20,093 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:51:20,096 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (1/1) ... [2025-03-17 06:51:20,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:51:20,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:51:20,128 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 06:51:20,133 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 06:51:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-03-17 06:51:20,149 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-03-17 06:51:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:51:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-17 06:51:20,149 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-17 06:51:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-17 06:51:20,149 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-17 06:51:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 06:51:20,150 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 06:51:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 06:51:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 06:51:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 06:51:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 06:51:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 06:51:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:51:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:51:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:51:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 06:51:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 06:51:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 06:51:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 06:51:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 06:51:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 06:51:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:51:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-17 06:51:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-17 06:51:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2025-03-17 06:51:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2025-03-17 06:51:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 06:51:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 06:51:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 06:51:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2025-03-17 06:51:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:51:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 06:51:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 06:51:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 06:51:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 06:51:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 06:51:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-17 06:51:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-17 06:51:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 06:51:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 06:51:20,383 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:51:20,386 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:51:20,434 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-17 06:51:20,458 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-17 06:51:20,530 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 06:51:20,536 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 06:51:26,056 INFO L? ?]: Removed 95 outVars from TransFormulas that were not future-live. [2025-03-17 06:51:26,056 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:51:26,065 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:51:26,065 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:51:26,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:51:26 BoogieIcfgContainer [2025-03-17 06:51:26,066 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:51:26,071 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:51:26,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:51:26,074 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:51:26,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:51:18" (1/3) ... [2025-03-17 06:51:26,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd77281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:51:26, skipping insertion in model container [2025-03-17 06:51:26,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:51:19" (2/3) ... [2025-03-17 06:51:26,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd77281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:51:26, skipping insertion in model container [2025-03-17 06:51:26,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:51:26" (3/3) ... [2025-03-17 06:51:26,076 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_clean_up_harness.i [2025-03-17 06:51:26,087 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:51:26,088 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_clean_up_harness.i that has 18 procedures, 124 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-03-17 06:51:26,137 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:51:26,148 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;@67ee1b4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:51:26,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:51:26,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 72 states have internal predecessors, (91), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 06:51:26,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-17 06:51:26,160 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:51:26,161 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2025-03-17 06:51:26,161 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:51:26,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:51:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash 395187266, now seen corresponding path program 1 times [2025-03-17 06:51:26,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:51:26,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056137130] [2025-03-17 06:51:26,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:26,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:51:30,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-17 06:51:30,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-17 06:51:30,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:30,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 06:51:31,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:51:31,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056137130] [2025-03-17 06:51:31,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056137130] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:51:31,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307485570] [2025-03-17 06:51:31,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:31,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:51:31,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:51:31,130 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 06:51:31,161 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 06:51:35,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-17 06:51:35,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-17 06:51:35,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:35,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:35,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 3960 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:51:35,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:51:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 06:51:35,633 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:51:35,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307485570] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:51:35,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:51:35,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:51:35,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391141349] [2025-03-17 06:51:35,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:51:35,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:51:35,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:51:35,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:51:35,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:51:35,657 INFO L87 Difference]: Start difference. First operand has 108 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 72 states have internal predecessors, (91), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-17 06:51:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:51:35,687 INFO L93 Difference]: Finished difference Result 210 states and 273 transitions. [2025-03-17 06:51:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:51:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 62 [2025-03-17 06:51:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:51:35,694 INFO L225 Difference]: With dead ends: 210 [2025-03-17 06:51:35,694 INFO L226 Difference]: Without dead ends: 103 [2025-03-17 06:51:35,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 63 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 06:51:35,702 INFO L435 NwaCegarLoop]: 131 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, 131 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 06:51:35,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:51:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2025-03-17 06:51:35,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2025-03-17 06:51:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 68 states have internal predecessors, (83), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-17 06:51:35,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2025-03-17 06:51:35,738 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 62 [2025-03-17 06:51:35,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:51:35,738 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2025-03-17 06:51:35,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-17 06:51:35,738 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2025-03-17 06:51:35,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 06:51:35,740 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:51:35,740 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2025-03-17 06:51:35,755 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 06:51:35,945 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 06:51:35,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:51:35,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:51:35,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1058875984, now seen corresponding path program 1 times [2025-03-17 06:51:35,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:51:35,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369420403] [2025-03-17 06:51:35,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:35,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:51:39,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 06:51:39,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 06:51:39,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:39,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-17 06:51:41,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:51:41,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369420403] [2025-03-17 06:51:41,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369420403] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:51:41,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:51:41,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:51:41,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642350187] [2025-03-17 06:51:41,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:51:41,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:51:41,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:51:41,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:51:41,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:51:41,009 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-17 06:51:41,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:51:41,427 INFO L93 Difference]: Finished difference Result 175 states and 214 transitions. [2025-03-17 06:51:41,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:51:41,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 68 [2025-03-17 06:51:41,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:51:41,432 INFO L225 Difference]: With dead ends: 175 [2025-03-17 06:51:41,432 INFO L226 Difference]: Without dead ends: 105 [2025-03-17 06:51:41,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:51:41,433 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 31 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 06:51:41,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 411 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 06:51:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-17 06:51:41,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-03-17 06:51:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 70 states have internal predecessors, (84), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2025-03-17 06:51:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2025-03-17 06:51:41,442 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 68 [2025-03-17 06:51:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:51:41,442 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2025-03-17 06:51:41,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-17 06:51:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2025-03-17 06:51:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 06:51:41,444 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:51:41,444 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:51:41,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:51:41,445 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:51:41,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:51:41,445 INFO L85 PathProgramCache]: Analyzing trace with hash 314701548, now seen corresponding path program 1 times [2025-03-17 06:51:41,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:51:41,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159686795] [2025-03-17 06:51:41,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:41,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:51:45,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:51:45,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:51:45,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:45,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-17 06:51:47,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:51:47,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159686795] [2025-03-17 06:51:47,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159686795] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:51:47,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:51:47,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:51:47,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762894169] [2025-03-17 06:51:47,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:51:47,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:51:47,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:51:47,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:51:47,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:51:47,389 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-17 06:51:51,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:51:52,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:51:52,223 INFO L93 Difference]: Finished difference Result 112 states and 135 transitions. [2025-03-17 06:51:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:51:52,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2025-03-17 06:51:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:51:52,226 INFO L225 Difference]: With dead ends: 112 [2025-03-17 06:51:52,227 INFO L226 Difference]: Without dead ends: 107 [2025-03-17 06:51:52,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:51:52,228 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 1 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2025-03-17 06:51:52,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 620 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2025-03-17 06:51:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-03-17 06:51:52,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2025-03-17 06:51:52,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 72 states have internal predecessors, (85), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2025-03-17 06:51:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2025-03-17 06:51:52,240 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 83 [2025-03-17 06:51:52,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:51:52,240 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2025-03-17 06:51:52,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-17 06:51:52,240 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2025-03-17 06:51:52,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-17 06:51:52,243 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:51:52,243 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2025-03-17 06:51:52,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:51:52,243 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:51:52,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:51:52,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1698305141, now seen corresponding path program 1 times [2025-03-17 06:51:52,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:51:52,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565380196] [2025-03-17 06:51:52,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:52,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:51:55,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-17 06:51:56,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-17 06:51:56,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:56,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:51:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-17 06:51:57,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:51:57,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565380196] [2025-03-17 06:51:57,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565380196] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:51:57,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145242430] [2025-03-17 06:51:57,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:51:57,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:51:57,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:51:57,551 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 06:51:57,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:52:01,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-17 06:52:02,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-17 06:52:02,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:02,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:02,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 4115 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:52:02,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:52:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 06:52:02,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:52:02,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145242430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:52:02,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:52:02,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 06:52:02,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257299928] [2025-03-17 06:52:02,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:52:02,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:52:02,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:52:02,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:52:02,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:52:02,414 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-17 06:52:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:52:02,507 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2025-03-17 06:52:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:52:02,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 84 [2025-03-17 06:52:02,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:52:02,509 INFO L225 Difference]: With dead ends: 126 [2025-03-17 06:52:02,509 INFO L226 Difference]: Without dead ends: 108 [2025-03-17 06:52:02,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:52:02,510 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 06:52:02,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 370 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 06:52:02,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-03-17 06:52:02,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-03-17 06:52:02,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 73 states have internal predecessors, (86), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2025-03-17 06:52:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2025-03-17 06:52:02,520 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 84 [2025-03-17 06:52:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:52:02,520 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2025-03-17 06:52:02,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-17 06:52:02,520 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2025-03-17 06:52:02,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-17 06:52:02,521 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:52:02,521 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2025-03-17 06:52:02,537 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 06:52:02,722 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,SelfDestructingSolverStorable3 [2025-03-17 06:52:02,722 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:52:02,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:52:02,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1616385280, now seen corresponding path program 1 times [2025-03-17 06:52:02,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:52:02,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450776794] [2025-03-17 06:52:02,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:02,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:52:06,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-17 06:52:06,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-17 06:52:06,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:06,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-17 06:52:07,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:52:07,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450776794] [2025-03-17 06:52:07,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450776794] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:52:07,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860634924] [2025-03-17 06:52:07,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:07,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:52:07,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:52:07,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:52:07,666 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 06:52:12,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-17 06:52:12,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-17 06:52:12,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:12,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:12,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 4134 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 06:52:12,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:52:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-17 06:52:12,763 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:52:12,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860634924] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:52:12,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:52:12,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 06:52:12,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749844486] [2025-03-17 06:52:12,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:52:12,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:52:12,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:52:12,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:52:12,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:52:12,764 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-17 06:52:12,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:52:12,996 INFO L93 Difference]: Finished difference Result 186 states and 224 transitions. [2025-03-17 06:52:12,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:52:12,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 85 [2025-03-17 06:52:12,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:52:12,998 INFO L225 Difference]: With dead ends: 186 [2025-03-17 06:52:12,998 INFO L226 Difference]: Without dead ends: 112 [2025-03-17 06:52:12,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:52:12,999 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 3 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:52:12,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 359 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 06:52:13,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-17 06:52:13,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2025-03-17 06:52:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 74 states have internal predecessors, (87), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2025-03-17 06:52:13,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2025-03-17 06:52:13,008 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 85 [2025-03-17 06:52:13,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:52:13,008 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2025-03-17 06:52:13,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-17 06:52:13,008 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2025-03-17 06:52:13,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-17 06:52:13,011 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:52:13,011 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2025-03-17 06:52:13,027 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 06:52:13,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:52:13,211 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:52:13,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:52:13,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1589925247, now seen corresponding path program 1 times [2025-03-17 06:52:13,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:52:13,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267213189] [2025-03-17 06:52:13,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:13,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:52:16,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-17 06:52:16,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 06:52:16,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:16,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-17 06:52:18,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:52:18,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267213189] [2025-03-17 06:52:18,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267213189] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:52:18,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917103774] [2025-03-17 06:52:18,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:52:18,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:52:18,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:52:18,043 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 06:52:18,044 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 06:52:22,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-17 06:52:36,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 06:52:36,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:52:36,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:52:36,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 4137 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-17 06:52:36,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:52:37,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 06:52:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 06:52:40,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:52:43,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2025-03-17 06:52:44,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-17 06:52:44,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 06:52:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-17 06:52:47,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917103774] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:52:47,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:52:47,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 14] total 28 [2025-03-17 06:52:47,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814096653] [2025-03-17 06:52:47,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:52:47,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 06:52:47,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:52:47,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 06:52:47,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2025-03-17 06:52:47,854 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 28 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 7 states have call successors, (20), 4 states have call predecessors, (20), 8 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19)