./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_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_priority_queue_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 d03ab2f374c74d452a3d10e43faf5dd107aad5d480e09c302467ee543678a603 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 07:19:39,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 07:19:39,071 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 07:19:39,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 07:19:39,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 07:19:39,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 07:19:39,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 07:19:39,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 07:19:39,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 07:19:39,099 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 07:19:39,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 07:19:39,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 07:19:39,100 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 07:19:39,100 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 07:19:39,100 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 07:19:39,100 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 07:19:39,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 07:19:39,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 07:19:39,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 07:19:39,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 07:19:39,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 07:19:39,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 07:19:39,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 07:19:39,101 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 07:19:39,101 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 07:19:39,101 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 07:19:39,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 07:19:39,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 07:19:39,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 07:19:39,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:19:39,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 07:19:39,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 07:19:39,101 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 07:19:39,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 07:19:39,102 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 07:19:39,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 07:19:39,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 07:19:39,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 07:19:39,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 07:19:39,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 07:19:39,102 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 -> d03ab2f374c74d452a3d10e43faf5dd107aad5d480e09c302467ee543678a603 [2025-03-17 07:19:39,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 07:19:39,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 07:19:39,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 07:19:39,327 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 07:19:39,327 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 07:19:39,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2025-03-17 07:19:40,453 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f256d1be/be5f2046cefa449489bb5db126aa2fbd/FLAG0cd671f3a [2025-03-17 07:19:40,927 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 07:19:40,927 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2025-03-17 07:19:40,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f256d1be/be5f2046cefa449489bb5db126aa2fbd/FLAG0cd671f3a [2025-03-17 07:19:41,021 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f256d1be/be5f2046cefa449489bb5db126aa2fbd [2025-03-17 07:19:41,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 07:19:41,025 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 07:19:41,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 07:19:41,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 07:19:41,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 07:19:41,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:19:41" (1/1) ... [2025-03-17 07:19:41,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f33c641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:41, skipping insertion in model container [2025-03-17 07:19:41,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:19:41" (1/1) ... [2025-03-17 07:19:41,102 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 07:19:41,306 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2025-03-17 07:19:41,312 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2025-03-17 07:19:41,817 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:41,818 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:41,818 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:41,819 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:41,819 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:41,830 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:41,831 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:41,832 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:41,832 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,129 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,129 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:19:42,206 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 07:19:42,220 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2025-03-17 07:19:42,220 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2025-03-17 07:19:42,262 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,263 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,263 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,263 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,267 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,274 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,274 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,275 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,275 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,351 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,352 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:19:42,355 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2025-03-17 07:19:42,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:19:42,508 INFO L204 MainTranslator]: Completed translation [2025-03-17 07:19:42,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42 WrapperNode [2025-03-17 07:19:42,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 07:19:42,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 07:19:42,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 07:19:42,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 07:19:42,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,617 INFO L138 Inliner]: procedures = 678, calls = 1509, calls flagged for inlining = 54, calls inlined = 9, statements flattened = 621 [2025-03-17 07:19:42,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 07:19:42,622 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 07:19:42,622 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 07:19:42,622 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 07:19:42,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,636 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,687 INFO L175 MemorySlicer]: Split 296 memory accesses to 5 slices as follows [2, 238, 3, 47, 6]. 80 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 6, 1, 0, 5]. The 251 writes are split as follows [0, 232, 1, 18, 0]. [2025-03-17 07:19:42,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,688 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,715 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,725 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 07:19:42,754 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 07:19:42,754 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 07:19:42,754 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 07:19:42,755 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (1/1) ... [2025-03-17 07:19:42,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:19:42,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:19:42,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 07:19:42,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 07:19:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-03-17 07:19:42,803 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-03-17 07:19:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 07:19:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-17 07:19:42,804 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-17 07:19:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-17 07:19:42,805 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-17 07:19:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 07:19:42,805 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 07:19:42,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 07:19:42,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 07:19:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 07:19:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 07:19:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 07:19:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 07:19:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 07:19:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 07:19:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 07:19:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 07:19:42,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clean_up [2025-03-17 07:19:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clean_up [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-17 07:19:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-03-17 07:19:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-17 07:19:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2025-03-17 07:19:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2025-03-17 07:19:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 07:19:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 07:19:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-17 07:19:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-17 07:19:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2025-03-17 07:19:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2025-03-17 07:19:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-17 07:19:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 07:19:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 07:19:43,071 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 07:19:43,073 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 07:19:43,118 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-17 07:19:43,122 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-03-17 07:19:43,156 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-17 07:19:43,185 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7341: havoc #t~ret656.base, #t~ret656.offset; [2025-03-17 07:19:43,265 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7494: havoc aws_priority_queue_backpointers_valid_#t~ret686#1;havoc aws_priority_queue_backpointers_valid_#t~short687#1; [2025-03-17 07:19:43,337 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 07:19:43,341 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 07:19:48,657 INFO L? ?]: Removed 125 outVars from TransFormulas that were not future-live. [2025-03-17 07:19:48,658 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 07:19:48,667 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 07:19:48,670 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 07:19:48,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:19:48 BoogieIcfgContainer [2025-03-17 07:19:48,670 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 07:19:48,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 07:19:48,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 07:19:48,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 07:19:48,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:19:41" (1/3) ... [2025-03-17 07:19:48,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2b3a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:19:48, skipping insertion in model container [2025-03-17 07:19:48,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:19:42" (2/3) ... [2025-03-17 07:19:48,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2b3a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:19:48, skipping insertion in model container [2025-03-17 07:19:48,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:19:48" (3/3) ... [2025-03-17 07:19:48,679 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_clean_up_harness.i [2025-03-17 07:19:48,692 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 07:19:48,693 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_clean_up_harness.i that has 19 procedures, 171 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-17 07:19:48,741 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 07:19:48,750 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;@dd44af1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 07:19:48,751 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 07:19:48,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 111 states have (on average 1.2522522522522523) internal successors, (139), 112 states have internal predecessors, (139), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2025-03-17 07:19:48,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-17 07:19:48,767 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:19:48,768 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:19:48,768 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:19:48,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:19:48,773 INFO L85 PathProgramCache]: Analyzing trace with hash -329028560, now seen corresponding path program 1 times [2025-03-17 07:19:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:19:48,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43745296] [2025-03-17 07:19:48,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:48,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:19:52,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-17 07:19:53,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-17 07:19:53,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:53,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-17 07:19:53,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:19:53,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43745296] [2025-03-17 07:19:53,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43745296] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:19:53,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633690454] [2025-03-17 07:19:53,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:53,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:19:53,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:19:53,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:19:53,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 07:19:57,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-17 07:19:58,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-17 07:19:58,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:58,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:58,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 4389 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 07:19:58,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:19:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-17 07:19:58,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:19:58,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633690454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:19:58,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:19:58,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 07:19:58,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397662412] [2025-03-17 07:19:58,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:19:58,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 07:19:58,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:19:58,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 07:19:58,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 07:19:58,323 INFO L87 Difference]: Start difference. First operand has 171 states, 111 states have (on average 1.2522522522522523) internal successors, (139), 112 states have internal predecessors, (139), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 07:19:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:19:58,352 INFO L93 Difference]: Finished difference Result 318 states and 429 transitions. [2025-03-17 07:19:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 07:19:58,354 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 129 [2025-03-17 07:19:58,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:19:58,359 INFO L225 Difference]: With dead ends: 318 [2025-03-17 07:19:58,359 INFO L226 Difference]: Without dead ends: 168 [2025-03-17 07:19:58,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 07:19:58,367 INFO L435 NwaCegarLoop]: 217 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, 217 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:19:58,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:19:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-03-17 07:19:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2025-03-17 07:19:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 110 states have internal predecessors, (133), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-17 07:19:58,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 214 transitions. [2025-03-17 07:19:58,402 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 214 transitions. Word has length 129 [2025-03-17 07:19:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:19:58,403 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 214 transitions. [2025-03-17 07:19:58,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 07:19:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 214 transitions. [2025-03-17 07:19:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-17 07:19:58,409 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:19:58,409 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:19:58,427 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 07:19:58,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 07:19:58,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:19:58,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:19:58,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1560928921, now seen corresponding path program 1 times [2025-03-17 07:19:58,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:19:58,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63143648] [2025-03-17 07:19:58,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:58,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:20:02,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 07:20:02,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 07:20:02,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:20:02,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:20:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2025-03-17 07:20:03,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:20:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63143648] [2025-03-17 07:20:03,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63143648] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:20:03,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 07:20:03,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 07:20:03,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336459702] [2025-03-17 07:20:03,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:20:03,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 07:20:03,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:20:03,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 07:20:03,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 07:20:03,700 INFO L87 Difference]: Start difference. First operand 168 states and 214 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2025-03-17 07:20:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:20:04,115 INFO L93 Difference]: Finished difference Result 260 states and 328 transitions. [2025-03-17 07:20:04,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 07:20:04,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 146 [2025-03-17 07:20:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:20:04,119 INFO L225 Difference]: With dead ends: 260 [2025-03-17 07:20:04,119 INFO L226 Difference]: Without dead ends: 168 [2025-03-17 07:20:04,120 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 07:20:04,120 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 6 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 07:20:04,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 779 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 07:20:04,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-03-17 07:20:04,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2025-03-17 07:20:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 110 states have internal predecessors, (132), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-17 07:20:04,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 213 transitions. [2025-03-17 07:20:04,139 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 213 transitions. Word has length 146 [2025-03-17 07:20:04,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:20:04,139 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 213 transitions. [2025-03-17 07:20:04,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2025-03-17 07:20:04,141 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 213 transitions. [2025-03-17 07:20:04,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-17 07:20:04,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:20:04,145 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:20:04,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 07:20:04,145 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:20:04,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:20:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1872962785, now seen corresponding path program 1 times [2025-03-17 07:20:04,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:20:04,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306248822] [2025-03-17 07:20:04,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:20:04,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:20:07,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 07:20:08,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 07:20:08,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:20:08,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:20:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2025-03-17 07:20:09,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:20:09,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306248822] [2025-03-17 07:20:09,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306248822] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:20:09,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 07:20:09,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 07:20:09,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669443560] [2025-03-17 07:20:09,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:20:09,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 07:20:09,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:20:09,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 07:20:09,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 07:20:09,323 INFO L87 Difference]: Start difference. First operand 168 states and 213 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-17 07:20:10,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:20:10,640 INFO L93 Difference]: Finished difference Result 279 states and 357 transitions. [2025-03-17 07:20:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 07:20:10,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 154 [2025-03-17 07:20:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:20:10,643 INFO L225 Difference]: With dead ends: 279 [2025-03-17 07:20:10,643 INFO L226 Difference]: Without dead ends: 170 [2025-03-17 07:20:10,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 07:20:10,645 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 33 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 07:20:10,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1197 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 07:20:10,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-17 07:20:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2025-03-17 07:20:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 109 states have (on average 1.2201834862385321) internal successors, (133), 112 states have internal predecessors, (133), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (42), 40 states have call predecessors, (42), 40 states have call successors, (42) [2025-03-17 07:20:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 216 transitions. [2025-03-17 07:20:10,655 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 216 transitions. Word has length 154 [2025-03-17 07:20:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:20:10,655 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 216 transitions. [2025-03-17 07:20:10,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-17 07:20:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 216 transitions. [2025-03-17 07:20:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-17 07:20:10,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:20:10,657 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:20:10,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 07:20:10,657 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:20:10,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:20:10,658 INFO L85 PathProgramCache]: Analyzing trace with hash 267623322, now seen corresponding path program 1 times [2025-03-17 07:20:10,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:20:10,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539192414] [2025-03-17 07:20:10,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:20:10,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:20:14,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-17 07:20:14,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-17 07:20:14,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:20:14,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:20:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2025-03-17 07:20:15,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:20:15,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539192414] [2025-03-17 07:20:15,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539192414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:20:15,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 07:20:15,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 07:20:15,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975918894] [2025-03-17 07:20:15,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:20:15,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 07:20:15,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:20:15,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 07:20:15,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 07:20:15,602 INFO L87 Difference]: Start difference. First operand 170 states and 216 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-03-17 07:20:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:20:16,461 INFO L93 Difference]: Finished difference Result 265 states and 333 transitions. [2025-03-17 07:20:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 07:20:16,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 169 [2025-03-17 07:20:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:20:16,463 INFO L225 Difference]: With dead ends: 265 [2025-03-17 07:20:16,463 INFO L226 Difference]: Without dead ends: 170 [2025-03-17 07:20:16,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 07:20:16,465 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 23 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 07:20:16,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 928 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 07:20:16,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-17 07:20:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2025-03-17 07:20:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 112 states have internal predecessors, (132), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (42), 40 states have call predecessors, (42), 40 states have call successors, (42) [2025-03-17 07:20:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 215 transitions. [2025-03-17 07:20:16,479 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 215 transitions. Word has length 169 [2025-03-17 07:20:16,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:20:16,480 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 215 transitions. [2025-03-17 07:20:16,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-03-17 07:20:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 215 transitions. [2025-03-17 07:20:16,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2025-03-17 07:20:16,482 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:20:16,482 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:20:16,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 07:20:16,482 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:20:16,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:20:16,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1461311298, now seen corresponding path program 1 times [2025-03-17 07:20:16,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:20:16,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865154090] [2025-03-17 07:20:16,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:20:16,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:20:19,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 185 statements into 1 equivalence classes. [2025-03-17 07:20:20,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 185 of 185 statements. [2025-03-17 07:20:20,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:20:20,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:20:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-03-17 07:20:21,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:20:21,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865154090] [2025-03-17 07:20:21,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865154090] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:20:21,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 07:20:21,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 07:20:21,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101500763] [2025-03-17 07:20:21,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:20:21,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 07:20:21,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:20:21,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 07:20:21,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 07:20:21,675 INFO L87 Difference]: Start difference. First operand 170 states and 215 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2025-03-17 07:20:23,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:20:23,508 INFO L93 Difference]: Finished difference Result 278 states and 351 transitions. [2025-03-17 07:20:23,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 07:20:23,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 185 [2025-03-17 07:20:23,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:20:23,511 INFO L225 Difference]: With dead ends: 278 [2025-03-17 07:20:23,511 INFO L226 Difference]: Without dead ends: 170 [2025-03-17 07:20:23,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 07:20:23,512 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 55 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 07:20:23,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1242 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 07:20:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-17 07:20:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2025-03-17 07:20:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 112 states have internal predecessors, (132), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 40 states have call predecessors, (41), 40 states have call successors, (41) [2025-03-17 07:20:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2025-03-17 07:20:23,520 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 185 [2025-03-17 07:20:23,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:20:23,521 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2025-03-17 07:20:23,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2025-03-17 07:20:23,521 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2025-03-17 07:20:23,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2025-03-17 07:20:23,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:20:23,523 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:20:23,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 07:20:23,523 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:20:23,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:20:23,524 INFO L85 PathProgramCache]: Analyzing trace with hash 22142699, now seen corresponding path program 1 times [2025-03-17 07:20:23,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:20:23,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638029925] [2025-03-17 07:20:23,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:20:23,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:20:27,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-03-17 07:20:27,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-03-17 07:20:27,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:20:27,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:20:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2025-03-17 07:20:28,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:20:28,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638029925] [2025-03-17 07:20:28,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638029925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:20:28,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 07:20:28,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 07:20:28,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725808450] [2025-03-17 07:20:28,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:20:28,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 07:20:28,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:20:28,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 07:20:28,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 07:20:28,634 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2025-03-17 07:20:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:20:29,070 INFO L93 Difference]: Finished difference Result 265 states and 331 transitions. [2025-03-17 07:20:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 07:20:29,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 200 [2025-03-17 07:20:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:20:29,072 INFO L225 Difference]: With dead ends: 265 [2025-03-17 07:20:29,072 INFO L226 Difference]: Without dead ends: 170 [2025-03-17 07:20:29,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 07:20:29,073 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 6 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 07:20:29,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1018 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 07:20:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-17 07:20:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2025-03-17 07:20:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 109 states have (on average 1.201834862385321) internal successors, (131), 112 states have internal predecessors, (131), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 40 states have call predecessors, (41), 40 states have call successors, (41) [2025-03-17 07:20:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 213 transitions. [2025-03-17 07:20:29,080 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 213 transitions. Word has length 200 [2025-03-17 07:20:29,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:20:29,081 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 213 transitions. [2025-03-17 07:20:29,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2025-03-17 07:20:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 213 transitions. [2025-03-17 07:20:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2025-03-17 07:20:29,082 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:20:29,083 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:20:29,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 07:20:29,083 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:20:29,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:20:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1217520551, now seen corresponding path program 1 times [2025-03-17 07:20:29,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:20:29,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613028061] [2025-03-17 07:20:29,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:20:29,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:20:32,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 201 statements into 1 equivalence classes. [2025-03-17 07:20:33,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 201 of 201 statements. [2025-03-17 07:20:33,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:20:33,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:20:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2025-03-17 07:20:34,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:20:34,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613028061] [2025-03-17 07:20:34,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613028061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:20:34,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 07:20:34,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 07:20:34,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952986476] [2025-03-17 07:20:34,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:20:34,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 07:20:34,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:20:34,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 07:20:34,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 07:20:34,969 INFO L87 Difference]: Start difference. First operand 170 states and 213 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 07:20:39,027 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 07:20:39,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:20:39,854 INFO L93 Difference]: Finished difference Result 180 states and 227 transitions. [2025-03-17 07:20:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 07:20:39,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 201 [2025-03-17 07:20:39,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:20:39,857 INFO L225 Difference]: With dead ends: 180 [2025-03-17 07:20:39,857 INFO L226 Difference]: Without dead ends: 178 [2025-03-17 07:20:39,857 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 07:20:39,860 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 3 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2025-03-17 07:20:39,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1035 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2025-03-17 07:20:39,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-03-17 07:20:39,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2025-03-17 07:20:39,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 113 states have (on average 1.1946902654867257) internal successors, (135), 117 states have internal predecessors, (135), 42 states have call successors, (42), 19 states have call predecessors, (42), 21 states have return successors, (47), 41 states have call predecessors, (47), 41 states have call successors, (47) [2025-03-17 07:20:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 224 transitions. [2025-03-17 07:20:39,874 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 224 transitions. Word has length 201 [2025-03-17 07:20:39,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:20:39,875 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 224 transitions. [2025-03-17 07:20:39,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 07:20:39,876 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 224 transitions. [2025-03-17 07:20:39,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2025-03-17 07:20:39,878 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:20:39,878 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:20:39,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 07:20:39,879 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:20:39,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:20:39,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1656392071, now seen corresponding path program 1 times [2025-03-17 07:20:39,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:20:39,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696838126] [2025-03-17 07:20:39,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:20:39,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:20:43,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 202 statements into 1 equivalence classes. [2025-03-17 07:20:44,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 202 of 202 statements. [2025-03-17 07:20:44,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:20:44,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:20:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-17 07:20:46,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:20:46,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696838126] [2025-03-17 07:20:46,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696838126] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:20:46,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494688743] [2025-03-17 07:20:46,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:20:46,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:20:46,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:20:46,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:20:46,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 07:20:50,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 202 statements into 1 equivalence classes. [2025-03-17 07:20:51,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 202 of 202 statements. [2025-03-17 07:20:51,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:20:51,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:20:51,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 4849 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-17 07:20:51,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:20:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2025-03-17 07:20:52,310 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:20:52,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494688743] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:20:52,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:20:52,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-17 07:20:52,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903483775] [2025-03-17 07:20:52,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:20:52,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 07:20:52,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:20:52,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 07:20:52,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-17 07:20:52,311 INFO L87 Difference]: Start difference. First operand 177 states and 224 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2025-03-17 07:20:52,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:20:52,877 INFO L93 Difference]: Finished difference Result 280 states and 352 transitions. [2025-03-17 07:20:52,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 07:20:52,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 202 [2025-03-17 07:20:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:20:52,881 INFO L225 Difference]: With dead ends: 280 [2025-03-17 07:20:52,881 INFO L226 Difference]: Without dead ends: 178 [2025-03-17 07:20:52,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-17 07:20:52,882 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 6 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 07:20:52,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1221 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 07:20:52,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-03-17 07:20:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-03-17 07:20:52,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 118 states have internal predecessors, (136), 42 states have call successors, (42), 19 states have call predecessors, (42), 21 states have return successors, (47), 41 states have call predecessors, (47), 41 states have call successors, (47) [2025-03-17 07:20:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 225 transitions. [2025-03-17 07:20:52,893 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 225 transitions. Word has length 202 [2025-03-17 07:20:52,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:20:52,893 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 225 transitions. [2025-03-17 07:20:52,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2025-03-17 07:20:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 225 transitions. [2025-03-17 07:20:52,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2025-03-17 07:20:52,895 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:20:52,895 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:20:52,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 07:20:53,096 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,SelfDestructingSolverStorable7 [2025-03-17 07:20:53,096 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:20:53,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:20:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash 749475909, now seen corresponding path program 1 times [2025-03-17 07:20:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:20:53,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62995230] [2025-03-17 07:20:53,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:20:53,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:20:57,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 203 statements into 1 equivalence classes. [2025-03-17 07:20:58,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 203 of 203 statements. [2025-03-17 07:20:58,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:20:58,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:20:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2025-03-17 07:20:59,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:20:59,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62995230] [2025-03-17 07:20:59,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62995230] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:20:59,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555300789] [2025-03-17 07:20:59,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:20:59,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:20:59,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:20:59,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:20:59,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 07:21:04,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 203 statements into 1 equivalence classes. [2025-03-17 07:21:04,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 203 of 203 statements. [2025-03-17 07:21:04,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:21:04,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:21:04,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 4868 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-17 07:21:04,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:21:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-17 07:21:05,091 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:21:05,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555300789] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:21:05,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:21:05,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 07:21:05,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606731678] [2025-03-17 07:21:05,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:21:05,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 07:21:05,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:21:05,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 07:21:05,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 07:21:05,094 INFO L87 Difference]: Start difference. First operand 178 states and 225 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2025-03-17 07:21:05,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:21:05,504 INFO L93 Difference]: Finished difference Result 289 states and 372 transitions. [2025-03-17 07:21:05,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 07:21:05,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 203 [2025-03-17 07:21:05,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:21:05,507 INFO L225 Difference]: With dead ends: 289 [2025-03-17 07:21:05,507 INFO L226 Difference]: Without dead ends: 182 [2025-03-17 07:21:05,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 202 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 07:21:05,508 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 3 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 07:21:05,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 599 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 07:21:05,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2025-03-17 07:21:05,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2025-03-17 07:21:05,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 115 states have (on average 1.191304347826087) internal successors, (137), 119 states have internal predecessors, (137), 42 states have call successors, (42), 19 states have call predecessors, (42), 21 states have return successors, (47), 41 states have call predecessors, (47), 41 states have call successors, (47) [2025-03-17 07:21:05,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 226 transitions. [2025-03-17 07:21:05,516 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 226 transitions. Word has length 203 [2025-03-17 07:21:05,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:21:05,517 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 226 transitions. [2025-03-17 07:21:05,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2025-03-17 07:21:05,517 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 226 transitions. [2025-03-17 07:21:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2025-03-17 07:21:05,520 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:21:05,520 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:21:05,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 07:21:05,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:21:05,721 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:21:05,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:21:05,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1405917719, now seen corresponding path program 1 times [2025-03-17 07:21:05,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:21:05,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038580317] [2025-03-17 07:21:05,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:21:05,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms