./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_add_size_checked_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_add_size_checked_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 1194f340f7ee532bc519199f81b46559282d195b8cb72a1fef2be81878780cc3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:49:22,329 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:49:22,385 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 06:49:22,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:49:22,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:49:22,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:49:22,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:49:22,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:49:22,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:49:22,413 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:49:22,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:49:22,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:49:22,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:49:22,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:49:22,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:49:22,414 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:49:22,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:49:22,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:49:22,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:49:22,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:49:22,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:49:22,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:49:22,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:49:22,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:49:22,415 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 -> 1194f340f7ee532bc519199f81b46559282d195b8cb72a1fef2be81878780cc3 [2025-03-17 06:49:22,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:49:22,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:49:22,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:49:22,667 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:49:22,667 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:49:22,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_add_size_checked_harness.i [2025-03-17 06:49:24,016 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171a01493/48de232bf09b435996cd33b4c9dddf4a/FLAGc1527ee2c [2025-03-17 06:49:24,826 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:49:24,826 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_add_size_checked_harness.i [2025-03-17 06:49:24,848 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171a01493/48de232bf09b435996cd33b4c9dddf4a/FLAGc1527ee2c [2025-03-17 06:49:25,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171a01493/48de232bf09b435996cd33b4c9dddf4a [2025-03-17 06:49:25,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:49:25,141 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:49:25,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:49:25,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:49:25,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:49:25,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:49:25" (1/1) ... [2025-03-17 06:49:25,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782c413f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:25, skipping insertion in model container [2025-03-17 06:49:25,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:49:25" (1/1) ... [2025-03-17 06:49:25,193 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:49:25,381 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_add_size_checked_harness.i[4494,4507] [2025-03-17 06:49:25,388 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_add_size_checked_harness.i[4554,4567] [2025-03-17 06:49:25,776 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,776 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,776 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,777 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,777 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,790 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,790 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,791 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,792 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,793 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,793 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,793 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:25,794 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,046 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_add_size_checked_harness.i[156113,156126] [2025-03-17 06:49:26,047 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_add_size_checked_harness.i[156332,156345] [2025-03-17 06:49:26,047 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_add_size_checked_harness.i[156528,156541] [2025-03-17 06:49:26,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:49:26,072 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:49:26,083 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_add_size_checked_harness.i[4494,4507] [2025-03-17 06:49:26,083 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_add_size_checked_harness.i[4554,4567] [2025-03-17 06:49:26,122 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,125 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,126 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,129 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,129 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,138 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,142 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,143 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,144 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,144 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,145 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,145 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,145 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:49:26,210 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [6947-6958] [2025-03-17 06:49:26,228 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_add_size_checked_harness.i[156113,156126] [2025-03-17 06:49:26,229 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_add_size_checked_harness.i[156332,156345] [2025-03-17 06:49:26,229 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_add_size_checked_harness.i[156528,156541] [2025-03-17 06:49:26,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:49:26,406 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:49:26,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26 WrapperNode [2025-03-17 06:49:26,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:49:26,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:49:26,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:49:26,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:49:26,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,453 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,487 INFO L138 Inliner]: procedures = 671, calls = 1227, calls flagged for inlining = 41, calls inlined = 5, statements flattened = 517 [2025-03-17 06:49:26,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:49:26,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:49:26,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:49:26,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:49:26,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,543 INFO L175 MemorySlicer]: Split 246 memory accesses to 4 slices as follows [2, 3, 3, 238]. 97 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 1, 1, 6]. The 234 writes are split as follows [0, 1, 1, 232]. [2025-03-17 06:49:26,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,567 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:49:26,590 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:49:26,590 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:49:26,590 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:49:26,593 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (1/1) ... [2025-03-17 06:49:26,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:49:26,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:49:26,618 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 06:49:26,621 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 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 06:49:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 06:49:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 06:49:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:49:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:49:26,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint32_t [2025-03-17 06:49:26,667 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint32_t [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2025-03-17 06:49:26,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_u64_checked [2025-03-17 06:49:26,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_u64_checked [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-03-17 06:49:26,667 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:49:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 06:49:26,852 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:49:26,853 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:49:26,895 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 06:49:26,920 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-03-17 06:49:26,932 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L265: havoc #t~nondet8; [2025-03-17 06:49:32,039 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-03-17 06:49:32,039 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:49:32,048 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:49:32,048 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:49:32,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:49:32 BoogieIcfgContainer [2025-03-17 06:49:32,049 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:49:32,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:49:32,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:49:32,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:49:32,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:49:25" (1/3) ... [2025-03-17 06:49:32,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c49d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:49:32, skipping insertion in model container [2025-03-17 06:49:32,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:49:26" (2/3) ... [2025-03-17 06:49:32,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c49d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:49:32, skipping insertion in model container [2025-03-17 06:49:32,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:49:32" (3/3) ... [2025-03-17 06:49:32,058 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_add_size_checked_harness.i [2025-03-17 06:49:32,070 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:49:32,071 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_add_size_checked_harness.i that has 8 procedures, 63 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-17 06:49:32,113 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:49:32,122 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;@7dc7a47f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:49:32,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:49:32,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 06:49:32,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-17 06:49:32,130 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:49:32,130 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 06:49:32,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:49:32,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:49:32,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2097791621, now seen corresponding path program 1 times [2025-03-17 06:49:32,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:49:32,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961662547] [2025-03-17 06:49:32,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:49:32,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:49:36,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 06:49:37,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 06:49:37,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:49:37,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:49:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 06:49:42,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:49:42,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961662547] [2025-03-17 06:49:42,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961662547] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:49:42,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:49:42,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:49:42,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440517403] [2025-03-17 06:49:42,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:49:42,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:49:42,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:49:43,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:49:43,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:49:43,012 INFO L87 Difference]: Start difference. First operand has 63 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-17 06:49:47,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:49:51,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:49:55,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:49:57,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:49:57,455 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2025-03-17 06:49:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:49:57,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2025-03-17 06:49:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:49:57,461 INFO L225 Difference]: With dead ends: 84 [2025-03-17 06:49:57,461 INFO L226 Difference]: Without dead ends: 57 [2025-03-17 06:49:57,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:49:57,470 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 6 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:49:57,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 409 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 3 Unknown, 0 Unchecked, 14.2s Time] [2025-03-17 06:49:57,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-03-17 06:49:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2025-03-17 06:49:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 36 states have internal predecessors, (38), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 06:49:57,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2025-03-17 06:49:57,502 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 32 [2025-03-17 06:49:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:49:57,503 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2025-03-17 06:49:57,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-17 06:49:57,504 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2025-03-17 06:49:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-17 06:49:57,505 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:49:57,505 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 06:49:57,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:49:57,505 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:49:57,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:49:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2099698245, now seen corresponding path program 1 times [2025-03-17 06:49:57,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:49:57,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307478363] [2025-03-17 06:49:57,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:49:57,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:50:02,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 06:50:02,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 06:50:02,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:50:02,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:50:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 06:50:02,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:50:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307478363] [2025-03-17 06:50:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307478363] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:50:03,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:50:03,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:50:03,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720047016] [2025-03-17 06:50:03,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:50:03,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:50:03,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:50:03,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:50:03,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:50:03,013 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-17 06:50:07,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:50:07,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:50:07,865 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2025-03-17 06:50:07,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:50:07,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 32 [2025-03-17 06:50:07,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:50:07,867 INFO L225 Difference]: With dead ends: 61 [2025-03-17 06:50:07,867 INFO L226 Difference]: Without dead ends: 54 [2025-03-17 06:50:07,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:50:07,868 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:50:07,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2025-03-17 06:50:07,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-03-17 06:50:07,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2025-03-17 06:50:07,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 06:50:07,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2025-03-17 06:50:07,874 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 32 [2025-03-17 06:50:07,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:50:07,876 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2025-03-17 06:50:07,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-17 06:50:07,876 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2025-03-17 06:50:07,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-17 06:50:07,877 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:50:07,877 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 06:50:07,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:50:07,877 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:50:07,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:50:07,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1388797453, now seen corresponding path program 1 times [2025-03-17 06:50:07,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:50:07,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364229662] [2025-03-17 06:50:07,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:50:07,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:50:11,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 06:50:12,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 06:50:12,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:50:12,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:50:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 06:50:16,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:50:16,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364229662] [2025-03-17 06:50:16,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364229662] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:50:16,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:50:16,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:50:16,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238831944] [2025-03-17 06:50:16,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:50:16,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:50:16,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:50:16,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:50:16,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:50:16,148 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-17 06:50:20,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:50:24,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:50:26,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:50:26,306 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2025-03-17 06:50:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:50:26,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2025-03-17 06:50:26,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:50:26,309 INFO L225 Difference]: With dead ends: 64 [2025-03-17 06:50:26,309 INFO L226 Difference]: Without dead ends: 59 [2025-03-17 06:50:26,310 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:50:26,311 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2025-03-17 06:50:26,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 393 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2025-03-17 06:50:26,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-03-17 06:50:26,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2025-03-17 06:50:26,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2025-03-17 06:50:26,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2025-03-17 06:50:26,324 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 36 [2025-03-17 06:50:26,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:50:26,324 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2025-03-17 06:50:26,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-17 06:50:26,324 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2025-03-17 06:50:26,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-17 06:50:26,325 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:50:26,325 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 06:50:26,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:50:26,325 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:50:26,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:50:26,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1390704077, now seen corresponding path program 1 times [2025-03-17 06:50:26,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:50:26,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236874413] [2025-03-17 06:50:26,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:50:26,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:50:30,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 06:50:30,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 06:50:30,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:50:30,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:50:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 06:50:30,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:50:30,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236874413] [2025-03-17 06:50:30,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236874413] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:50:30,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:50:30,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:50:30,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709793873] [2025-03-17 06:50:30,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:50:30,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:50:30,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:50:30,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:50:30,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:50:30,963 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-17 06:50:35,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:50:39,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:50:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:50:40,162 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2025-03-17 06:50:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:50:40,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 36 [2025-03-17 06:50:40,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:50:40,163 INFO L225 Difference]: With dead ends: 63 [2025-03-17 06:50:40,163 INFO L226 Difference]: Without dead ends: 54 [2025-03-17 06:50:40,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:50:40,164 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:50:40,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2025-03-17 06:50:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-03-17 06:50:40,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2025-03-17 06:50:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.096774193548387) internal successors, (34), 34 states have internal predecessors, (34), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 06:50:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2025-03-17 06:50:40,168 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 36 [2025-03-17 06:50:40,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:50:40,169 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2025-03-17 06:50:40,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-17 06:50:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2025-03-17 06:50:40,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-17 06:50:40,170 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:50:40,170 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 06:50:40,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:50:40,170 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:50:40,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:50:40,170 INFO L85 PathProgramCache]: Analyzing trace with hash 335003873, now seen corresponding path program 1 times [2025-03-17 06:50:40,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:50:40,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455378157] [2025-03-17 06:50:40,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:50:40,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:50:44,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 06:50:44,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 06:50:44,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:50:44,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:50:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 06:50:44,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:50:44,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455378157] [2025-03-17 06:50:44,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455378157] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:50:44,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:50:44,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:50:44,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112806588] [2025-03-17 06:50:44,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:50:44,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:50:44,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:50:44,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:50:44,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:50:44,993 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-17 06:50:49,055 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 06:50:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:50:49,787 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2025-03-17 06:50:49,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:50:49,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 37 [2025-03-17 06:50:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:50:49,789 INFO L225 Difference]: With dead ends: 58 [2025-03-17 06:50:49,789 INFO L226 Difference]: Without dead ends: 53 [2025-03-17 06:50:49,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 06:50:49,789 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:50:49,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 279 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2025-03-17 06:50:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-03-17 06:50:49,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2025-03-17 06:50:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.064516129032258) internal successors, (33), 33 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 06:50:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2025-03-17 06:50:49,795 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 37 [2025-03-17 06:50:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:50:49,795 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2025-03-17 06:50:49,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-17 06:50:49,795 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2025-03-17 06:50:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-17 06:50:49,796 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:50:49,796 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 06:50:49,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:50:49,796 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:50:49,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:50:49,796 INFO L85 PathProgramCache]: Analyzing trace with hash 336910497, now seen corresponding path program 1 times [2025-03-17 06:50:49,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:50:49,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694157758] [2025-03-17 06:50:49,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:50:49,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:50:53,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 06:50:53,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 06:50:53,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:50:53,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:50:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 06:50:56,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:50:56,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694157758] [2025-03-17 06:50:56,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694157758] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:50:56,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:50:56,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:50:56,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393773543] [2025-03-17 06:50:56,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:50:56,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:50:56,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:50:56,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:50:56,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:50:56,084 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-17 06:50:56,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:50:56,397 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2025-03-17 06:50:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:50:56,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2025-03-17 06:50:56,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:50:56,402 INFO L225 Difference]: With dead ends: 60 [2025-03-17 06:50:56,402 INFO L226 Difference]: Without dead ends: 37 [2025-03-17 06:50:56,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:50:56,403 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 06:50:56,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 06:50:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-17 06:50:56,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-03-17 06:50:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-17 06:50:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2025-03-17 06:50:56,407 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 37 [2025-03-17 06:50:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:50:56,407 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2025-03-17 06:50:56,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-17 06:50:56,407 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2025-03-17 06:50:56,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-17 06:50:56,409 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:50:56,410 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 06:50:56,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:50:56,410 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:50:56,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:50:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2043852749, now seen corresponding path program 1 times [2025-03-17 06:50:56,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:50:56,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806133370] [2025-03-17 06:50:56,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:50:56,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:51:00,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-17 06:51:00,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 06:51:00,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:51:00,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat