./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-40.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 701bed3a43f899916e62fb61f191b70b6f4d30dc354ae918413412b769e8c450 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 16:28:10,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 16:28:10,551 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 16:28:10,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 16:28:10,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 16:28:10,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 16:28:10,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 16:28:10,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 16:28:10,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 16:28:10,574 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 16:28:10,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 16:28:10,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 16:28:10,575 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 16:28:10,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 16:28:10,576 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 16:28:10,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 16:28:10,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 16:28:10,576 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 16:28:10,576 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 16:28:10,576 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 16:28:10,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 16:28:10,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 16:28:10,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 16:28:10,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 16:28:10,577 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 16:28:10,577 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 16:28:10,577 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 16:28:10,577 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 16:28:10,577 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 16:28:10,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 16:28:10,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 16:28:10,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 16:28:10,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:28:10,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 16:28:10,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 16:28:10,578 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 16:28:10,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 16:28:10,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 16:28:10,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 16:28:10,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 16:28:10,578 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 16:28:10,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 16:28:10,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 16:28:10,578 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 701bed3a43f899916e62fb61f191b70b6f4d30dc354ae918413412b769e8c450 [2025-03-08 16:28:10,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 16:28:10,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 16:28:10,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 16:28:10,778 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 16:28:10,779 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 16:28:10,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-40.i [2025-03-08 16:28:11,857 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334700f8c/4d96e623a8924c199c7d256fa7ecf51b/FLAG4a5c875df [2025-03-08 16:28:12,118 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 16:28:12,119 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-40.i [2025-03-08 16:28:12,125 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334700f8c/4d96e623a8924c199c7d256fa7ecf51b/FLAG4a5c875df [2025-03-08 16:28:12,428 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334700f8c/4d96e623a8924c199c7d256fa7ecf51b [2025-03-08 16:28:12,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 16:28:12,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 16:28:12,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 16:28:12,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 16:28:12,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 16:28:12,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5540f65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12, skipping insertion in model container [2025-03-08 16:28:12,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,446 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 16:28:12,539 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/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-40.i[917,930] [2025-03-08 16:28:12,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:28:12,602 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 16:28:12,610 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/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-40.i[917,930] [2025-03-08 16:28:12,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:28:12,646 INFO L204 MainTranslator]: Completed translation [2025-03-08 16:28:12,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12 WrapperNode [2025-03-08 16:28:12,647 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 16:28:12,648 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 16:28:12,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 16:28:12,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 16:28:12,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,657 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,683 INFO L138 Inliner]: procedures = 29, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 488 [2025-03-08 16:28:12,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 16:28:12,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 16:28:12,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 16:28:12,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 16:28:12,690 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,693 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,709 INFO L175 MemorySlicer]: Split 120 memory accesses to 8 slices as follows [2, 16, 14, 15, 27, 17, 10, 19]. 23 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 2, 2, 1, 3, 3, 2, 3]. The 17 writes are split as follows [0, 2, 2, 1, 3, 3, 2, 4]. [2025-03-08 16:28:12,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,723 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 16:28:12,730 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 16:28:12,730 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 16:28:12,730 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 16:28:12,731 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (1/1) ... [2025-03-08 16:28:12,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:28:12,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:28:12,756 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) [2025-03-08 16:28:12,758 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 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-08 16:28:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 16:28:12,775 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 16:28:12,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 16:28:12,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 16:28:12,906 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 16:28:12,907 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 16:28:13,225 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L121: havoc property_#t~mem70#1;havoc property_#t~ite82#1;havoc property_#t~mem72#1;havoc property_#t~mem71#1;havoc property_#t~short73#1;havoc property_#t~ite81#1;havoc property_#t~mem74#1;havoc property_#t~mem75#1;havoc property_#t~ite80#1;havoc property_#t~mem76#1;havoc property_#t~ite79#1;havoc property_#t~mem78#1;havoc property_#t~mem77#1;havoc property_#t~mem83#1;havoc property_#t~mem84#1;havoc property_#t~mem85#1;havoc property_#t~mem86#1;havoc property_#t~mem87#1;havoc property_#t~bitwise88#1;havoc property_#t~ite94#1;havoc property_#t~mem91#1;havoc property_#t~mem89#1;havoc property_#t~mem90#1;havoc property_#t~mem93#1;havoc property_#t~mem92#1;havoc property_#t~short95#1;havoc property_#t~mem99#1;havoc property_#t~mem96#1;havoc property_#t~ite98#1;havoc property_#t~mem97#1;havoc property_#t~ite102#1;havoc property_#t~mem101#1;havoc property_#t~mem100#1;havoc property_#t~short103#1;havoc property_#t~mem104#1;havoc property_#t~ite111#1;havoc property_#t~mem110#1;havoc property_#t~mem106#1;havoc property_#t~mem105#1;havoc property_#t~ite109#1;havoc property_#t~mem107#1;havoc property_#t~mem108#1;havoc property_#t~short112#1;havoc property_#t~mem114#1;havoc property_#t~mem113#1;havoc property_#t~short115#1;havoc property_#t~mem117#1;havoc property_#t~mem116#1;havoc property_#t~short118#1;havoc property_#t~mem120#1;havoc property_#t~mem119#1;havoc property_#t~short121#1; [2025-03-08 16:28:13,262 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2025-03-08 16:28:13,263 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 16:28:13,278 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 16:28:13,278 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 16:28:13,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:28:13 BoogieIcfgContainer [2025-03-08 16:28:13,278 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 16:28:13,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 16:28:13,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 16:28:13,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 16:28:13,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:28:12" (1/3) ... [2025-03-08 16:28:13,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea87500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:28:13, skipping insertion in model container [2025-03-08 16:28:13,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:28:12" (2/3) ... [2025-03-08 16:28:13,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea87500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:28:13, skipping insertion in model container [2025-03-08 16:28:13,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:28:13" (3/3) ... [2025-03-08 16:28:13,285 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-40.i [2025-03-08 16:28:13,296 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 16:28:13,297 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-ap_file-40.i that has 2 procedures, 112 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 16:28:13,336 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 16:28:13,343 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;@17a8f369, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 16:28:13,345 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 16:28:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 90 states have (on average 1.4111111111111112) internal successors, (127), 91 states have internal predecessors, (127), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:28:13,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 16:28:13,357 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:28:13,358 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:28:13,358 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:28:13,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:28:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1591007189, now seen corresponding path program 1 times [2025-03-08 16:28:13,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:28:13,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293582518] [2025-03-08 16:28:13,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:13,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:28:13,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:28:13,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:28:13,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:13,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-03-08 16:28:13,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:28:13,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293582518] [2025-03-08 16:28:13,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293582518] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:28:13,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957973705] [2025-03-08 16:28:13,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:13,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:28:13,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:28:13,677 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) [2025-03-08 16:28:13,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 16:28:13,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:28:13,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:28:13,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:13,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:13,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 16:28:13,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:28:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-03-08 16:28:13,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:28:13,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957973705] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:28:13,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:28:13,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 16:28:13,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671169153] [2025-03-08 16:28:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:28:13,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 16:28:13,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:28:13,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 16:28:13,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:28:13,939 INFO L87 Difference]: Start difference. First operand has 112 states, 90 states have (on average 1.4111111111111112) internal successors, (127), 91 states have internal predecessors, (127), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-08 16:28:13,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:28:13,968 INFO L93 Difference]: Finished difference Result 218 states and 344 transitions. [2025-03-08 16:28:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 16:28:13,970 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 150 [2025-03-08 16:28:13,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:28:13,975 INFO L225 Difference]: With dead ends: 218 [2025-03-08 16:28:13,975 INFO L226 Difference]: Without dead ends: 109 [2025-03-08 16:28:13,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:28:13,981 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:28:13,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:28:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-03-08 16:28:14,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-03-08 16:28:14,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.3863636363636365) internal successors, (122), 88 states have internal predecessors, (122), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:28:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 160 transitions. [2025-03-08 16:28:14,013 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 160 transitions. Word has length 150 [2025-03-08 16:28:14,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:28:14,014 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 160 transitions. [2025-03-08 16:28:14,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-08 16:28:14,014 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 160 transitions. [2025-03-08 16:28:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 16:28:14,016 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:28:14,016 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:28:14,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 16:28:14,216 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 [2025-03-08 16:28:14,217 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:28:14,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:28:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash -56461782, now seen corresponding path program 1 times [2025-03-08 16:28:14,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:28:14,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391911339] [2025-03-08 16:28:14,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:28:14,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:28:14,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:28:14,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:14,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-08 16:28:14,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:28:14,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391911339] [2025-03-08 16:28:14,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391911339] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:28:14,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469922116] [2025-03-08 16:28:14,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:14,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:28:14,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:28:14,676 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) [2025-03-08 16:28:14,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 16:28:14,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:28:14,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:28:14,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:14,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:14,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:28:14,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:28:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:28:14,923 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:28:14,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469922116] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:28:14,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:28:14,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 16:28:14,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257196656] [2025-03-08 16:28:14,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:28:14,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:28:14,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:28:14,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:28:14,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:28:14,925 INFO L87 Difference]: Start difference. First operand 109 states and 160 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:28:14,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:28:14,966 INFO L93 Difference]: Finished difference Result 218 states and 321 transitions. [2025-03-08 16:28:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:28:14,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2025-03-08 16:28:14,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:28:14,968 INFO L225 Difference]: With dead ends: 218 [2025-03-08 16:28:14,968 INFO L226 Difference]: Without dead ends: 112 [2025-03-08 16:28:14,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:28:14,969 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 1 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:28:14,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 454 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:28:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-08 16:28:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2025-03-08 16:28:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 90 states have internal predecessors, (124), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:28:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 162 transitions. [2025-03-08 16:28:14,976 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 162 transitions. Word has length 150 [2025-03-08 16:28:14,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:28:14,980 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 162 transitions. [2025-03-08 16:28:14,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:28:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 162 transitions. [2025-03-08 16:28:14,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 16:28:14,982 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:28:14,982 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:28:14,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 16:28:15,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-08 16:28:15,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:28:15,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:28:15,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1863916245, now seen corresponding path program 1 times [2025-03-08 16:28:15,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:28:15,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899729438] [2025-03-08 16:28:15,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:15,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:28:15,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:28:15,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:28:15,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:15,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-08 16:28:15,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:28:15,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899729438] [2025-03-08 16:28:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899729438] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:28:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839409157] [2025-03-08 16:28:15,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:15,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:28:15,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:28:15,410 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) [2025-03-08 16:28:15,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 16:28:15,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:28:15,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:28:15,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:15,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:15,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:28:15,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:28:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:28:15,620 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:28:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839409157] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:28:15,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:28:15,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 16:28:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797181018] [2025-03-08 16:28:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:28:15,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:28:15,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:28:15,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:28:15,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:28:15,622 INFO L87 Difference]: Start difference. First operand 111 states and 162 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:28:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:28:15,653 INFO L93 Difference]: Finished difference Result 222 states and 325 transitions. [2025-03-08 16:28:15,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:28:15,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2025-03-08 16:28:15,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:28:15,655 INFO L225 Difference]: With dead ends: 222 [2025-03-08 16:28:15,655 INFO L226 Difference]: Without dead ends: 114 [2025-03-08 16:28:15,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:28:15,656 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 1 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:28:15,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 455 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:28:15,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-03-08 16:28:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2025-03-08 16:28:15,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 92 states have internal predecessors, (126), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:28:15,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 164 transitions. [2025-03-08 16:28:15,664 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 164 transitions. Word has length 150 [2025-03-08 16:28:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:28:15,665 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 164 transitions. [2025-03-08 16:28:15,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:28:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 164 transitions. [2025-03-08 16:28:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 16:28:15,669 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:28:15,669 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:28:15,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 16:28:15,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:28:15,870 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:28:15,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:28:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash -976412564, now seen corresponding path program 1 times [2025-03-08 16:28:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:28:15,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126014367] [2025-03-08 16:28:15,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:28:15,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:28:15,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:28:15,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:15,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-08 16:28:16,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:28:16,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126014367] [2025-03-08 16:28:16,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126014367] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:28:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864419849] [2025-03-08 16:28:16,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:16,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:28:16,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:28:16,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 16:28:16,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 16:28:16,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:28:16,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:28:16,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:16,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:16,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:28:16,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:28:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:28:16,307 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:28:16,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864419849] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:28:16,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:28:16,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 16:28:16,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615181344] [2025-03-08 16:28:16,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:28:16,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:28:16,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:28:16,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:28:16,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:28:16,309 INFO L87 Difference]: Start difference. First operand 113 states and 164 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:28:16,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:28:16,337 INFO L93 Difference]: Finished difference Result 226 states and 329 transitions. [2025-03-08 16:28:16,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:28:16,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2025-03-08 16:28:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:28:16,340 INFO L225 Difference]: With dead ends: 226 [2025-03-08 16:28:16,340 INFO L226 Difference]: Without dead ends: 116 [2025-03-08 16:28:16,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:28:16,342 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 1 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:28:16,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 457 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:28:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-08 16:28:16,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2025-03-08 16:28:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 94 states have (on average 1.3617021276595744) internal successors, (128), 94 states have internal predecessors, (128), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:28:16,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 166 transitions. [2025-03-08 16:28:16,349 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 166 transitions. Word has length 150 [2025-03-08 16:28:16,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:28:16,351 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 166 transitions. [2025-03-08 16:28:16,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:28:16,351 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 166 transitions. [2025-03-08 16:28:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 16:28:16,353 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:28:16,353 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:28:16,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 16:28:16,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:28:16,553 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:28:16,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:28:16,554 INFO L85 PathProgramCache]: Analyzing trace with hash -975489043, now seen corresponding path program 1 times [2025-03-08 16:28:16,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:28:16,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081090508] [2025-03-08 16:28:16,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:16,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:28:16,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:28:16,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:28:16,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:16,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-08 16:28:16,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:28:16,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081090508] [2025-03-08 16:28:16,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081090508] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:28:16,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349672475] [2025-03-08 16:28:16,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:16,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:28:16,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:28:16,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 16:28:16,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 16:28:16,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:28:16,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:28:16,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:16,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:16,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:28:16,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:28:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:28:16,936 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:28:16,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349672475] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:28:16,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:28:16,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-08 16:28:16,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201217979] [2025-03-08 16:28:16,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:28:16,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:28:16,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:28:16,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:28:16,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:28:16,938 INFO L87 Difference]: Start difference. First operand 115 states and 166 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:28:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:28:16,958 INFO L93 Difference]: Finished difference Result 229 states and 332 transitions. [2025-03-08 16:28:16,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:28:16,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2025-03-08 16:28:16,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:28:16,960 INFO L225 Difference]: With dead ends: 229 [2025-03-08 16:28:16,960 INFO L226 Difference]: Without dead ends: 117 [2025-03-08 16:28:16,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:28:16,961 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:28:16,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 457 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:28:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-08 16:28:16,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2025-03-08 16:28:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.3541666666666667) internal successors, (130), 96 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:28:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 168 transitions. [2025-03-08 16:28:16,968 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 168 transitions. Word has length 150 [2025-03-08 16:28:16,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:28:16,968 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 168 transitions. [2025-03-08 16:28:16,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:28:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 168 transitions. [2025-03-08 16:28:16,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:28:16,970 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:28:16,970 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:28:16,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 16:28:17,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:28:17,170 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:28:17,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:28:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1113688808, now seen corresponding path program 1 times [2025-03-08 16:28:17,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:28:17,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686723147] [2025-03-08 16:28:17,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:17,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:28:17,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:28:17,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:28:17,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:17,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-08 16:28:17,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:28:17,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686723147] [2025-03-08 16:28:17,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686723147] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:28:17,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411582894] [2025-03-08 16:28:17,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:17,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:28:17,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:28:17,324 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 16:28:17,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 16:28:17,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:28:17,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:28:17,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:17,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:17,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 16:28:17,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:28:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:28:17,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:28:17,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411582894] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:28:17,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:28:17,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2025-03-08 16:28:17,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015624065] [2025-03-08 16:28:17,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:28:17,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:28:17,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:28:17,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:28:17,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:28:17,548 INFO L87 Difference]: Start difference. First operand 117 states and 168 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:28:17,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:28:17,580 INFO L93 Difference]: Finished difference Result 234 states and 337 transitions. [2025-03-08 16:28:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:28:17,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2025-03-08 16:28:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:28:17,582 INFO L225 Difference]: With dead ends: 234 [2025-03-08 16:28:17,582 INFO L226 Difference]: Without dead ends: 120 [2025-03-08 16:28:17,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:28:17,583 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:28:17,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 605 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:28:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-03-08 16:28:17,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2025-03-08 16:28:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.3505154639175259) internal successors, (131), 97 states have internal predecessors, (131), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:28:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 169 transitions. [2025-03-08 16:28:17,595 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 169 transitions. Word has length 153 [2025-03-08 16:28:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:28:17,595 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 169 transitions. [2025-03-08 16:28:17,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:28:17,595 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 169 transitions. [2025-03-08 16:28:17,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:28:17,597 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:28:17,598 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:28:17,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 16:28:17,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:28:17,799 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:28:17,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:28:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash 35005263, now seen corresponding path program 1 times [2025-03-08 16:28:17,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:28:17,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791972446] [2025-03-08 16:28:17,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:17,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:28:17,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:28:17,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:28:17,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:17,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:28:19,038 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:28:19,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:28:19,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791972446] [2025-03-08 16:28:19,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791972446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:28:19,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:28:19,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 16:28:19,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084479320] [2025-03-08 16:28:19,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:28:19,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 16:28:19,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:28:19,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 16:28:19,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:28:19,040 INFO L87 Difference]: Start difference. First operand 118 states and 169 transitions. Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 16:28:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:28:19,447 INFO L93 Difference]: Finished difference Result 328 states and 468 transitions. [2025-03-08 16:28:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 16:28:19,447 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 153 [2025-03-08 16:28:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:28:19,448 INFO L225 Difference]: With dead ends: 328 [2025-03-08 16:28:19,448 INFO L226 Difference]: Without dead ends: 213 [2025-03-08 16:28:19,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-03-08 16:28:19,449 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 583 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 16:28:19,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1040 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 16:28:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2025-03-08 16:28:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 210. [2025-03-08 16:28:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 173 states have (on average 1.3352601156069364) internal successors, (231), 174 states have internal predecessors, (231), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 16:28:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 299 transitions. [2025-03-08 16:28:19,479 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 299 transitions. Word has length 153 [2025-03-08 16:28:19,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:28:19,480 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 299 transitions. [2025-03-08 16:28:19,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 16:28:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 299 transitions. [2025-03-08 16:28:19,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:28:19,481 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:28:19,481 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:28:19,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 16:28:19,481 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:28:19,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:28:19,482 INFO L85 PathProgramCache]: Analyzing trace with hash -475528914, now seen corresponding path program 1 times [2025-03-08 16:28:19,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:28:19,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268406311] [2025-03-08 16:28:19,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:28:19,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:28:19,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:28:19,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:28:19,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:28:19,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat