./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_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 0a15bafc8303311b2bd7bb6d250a0c3e0c3fd8acbc6e1c59dc33f3d3e662f861 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 05:23:26,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 05:23:26,073 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 05:23:26,076 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 05:23:26,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 05:23:26,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 05:23:26,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 05:23:26,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 05:23:26,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 05:23:26,091 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 05:23:26,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 05:23:26,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 05:23:26,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 05:23:26,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 05:23:26,092 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 05:23:26,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 05:23:26,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 05:23:26,092 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 05:23:26,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 05:23:26,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 05:23:26,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 05:23:26,093 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 05:23:26,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 05:23:26,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 05:23:26,093 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 05:23:26,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 05:23:26,093 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 05:23:26,093 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 05:23:26,094 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 05:23:26,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 05:23:26,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 05:23:26,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 05:23:26,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:23:26,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 05:23:26,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 05:23:26,094 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 05:23:26,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 05:23:26,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 05:23:26,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 05:23:26,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 05:23:26,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 05:23:26,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 05:23:26,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 05:23:26,095 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 -> 0a15bafc8303311b2bd7bb6d250a0c3e0c3fd8acbc6e1c59dc33f3d3e662f861 [2025-03-17 05:23:26,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 05:23:26,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 05:23:26,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 05:23:26,403 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 05:23:26,403 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 05:23:26,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-40.i [2025-03-17 05:23:27,627 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63caf9d6/ccf2c0d162ee4821863b6aa50c3af513/FLAG3a3b3b4ea [2025-03-17 05:23:27,885 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 05:23:27,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-40.i [2025-03-17 05:23:27,896 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63caf9d6/ccf2c0d162ee4821863b6aa50c3af513/FLAG3a3b3b4ea [2025-03-17 05:23:28,184 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63caf9d6/ccf2c0d162ee4821863b6aa50c3af513 [2025-03-17 05:23:28,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 05:23:28,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 05:23:28,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 05:23:28,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 05:23:28,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 05:23:28,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a36a757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28, skipping insertion in model container [2025-03-17 05:23:28,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 05:23:28,309 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-a_file-40.i[916,929] [2025-03-17 05:23:28,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:23:28,374 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 05:23:28,383 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-a_file-40.i[916,929] [2025-03-17 05:23:28,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:23:28,449 INFO L204 MainTranslator]: Completed translation [2025-03-17 05:23:28,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28 WrapperNode [2025-03-17 05:23:28,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 05:23:28,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 05:23:28,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 05:23:28,452 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 05:23:28,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,509 INFO L138 Inliner]: procedures = 29, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 472 [2025-03-17 05:23:28,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 05:23:28,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 05:23:28,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 05:23:28,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 05:23:28,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,523 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,553 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]. [2025-03-17 05:23:28,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,581 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 05:23:28,604 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 05:23:28,604 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 05:23:28,604 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 05:23:28,605 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (1/1) ... [2025-03-17 05:23:28,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:23:28,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:23:28,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 05:23:28,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 05:23:28,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 05:23:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-17 05:23:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-17 05:23:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-17 05:23:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-17 05:23:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-17 05:23:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-17 05:23:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-17 05:23:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-03-17 05:23:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 05:23:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 05:23:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 05:23:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 05:23:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 05:23:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 05:23:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-17 05:23:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-17 05:23:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-17 05:23:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-17 05:23:28,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-17 05:23:28,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-17 05:23:28,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-17 05:23:28,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-17 05:23:28,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-17 05:23:28,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2025-03-17 05:23:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 05:23:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 05:23:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 05:23:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 05:23:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 05:23:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 05:23:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-17 05:23:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-17 05:23:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-17 05:23:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-17 05:23:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-17 05:23:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-17 05:23:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-17 05:23:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-17 05:23:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-17 05:23:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2025-03-17 05:23:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 05:23:28,659 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 05:23:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 05:23:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 05:23:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 05:23:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 05:23:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 05:23:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 05:23:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-17 05:23:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-17 05:23:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 05:23:28,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 05:23:28,832 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 05:23:28,833 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 05:23:29,208 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L105: 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; [2025-03-17 05:23:29,247 INFO L? ?]: Removed 103 outVars from TransFormulas that were not future-live. [2025-03-17 05:23:29,247 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 05:23:29,264 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 05:23:29,265 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 05:23:29,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:23:29 BoogieIcfgContainer [2025-03-17 05:23:29,265 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 05:23:29,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 05:23:29,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 05:23:29,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 05:23:29,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 05:23:28" (1/3) ... [2025-03-17 05:23:29,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c6bf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:23:29, skipping insertion in model container [2025-03-17 05:23:29,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:23:28" (2/3) ... [2025-03-17 05:23:29,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c6bf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:23:29, skipping insertion in model container [2025-03-17 05:23:29,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:23:29" (3/3) ... [2025-03-17 05:23:29,273 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-40.i [2025-03-17 05:23:29,285 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 05:23:29,286 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-40.i that has 2 procedures, 107 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 05:23:29,332 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 05:23:29,342 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;@6b769e68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 05:23:29,342 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 05:23:29,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 86 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) [2025-03-17 05:23:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-17 05:23:29,357 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:23:29,358 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] [2025-03-17 05:23:29,358 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:23:29,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:23:29,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2023614748, now seen corresponding path program 1 times [2025-03-17 05:23:29,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:23:29,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942933489] [2025-03-17 05:23:29,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:29,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:23:29,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 05:23:29,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 05:23:29,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:29,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-03-17 05:23:29,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:23:29,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942933489] [2025-03-17 05:23:29,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942933489] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:23:29,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194793677] [2025-03-17 05:23:29,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:29,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:23:29,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:23:29,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:23:29,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 05:23:29,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 05:23:29,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 05:23:29,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:29,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:29,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 05:23:29,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:23:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-03-17 05:23:29,912 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:23:29,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194793677] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:23:29,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:23:29,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 05:23:29,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892791441] [2025-03-17 05:23:29,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:23:29,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 05:23:29,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:23:29,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 05:23:29,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 05:23:29,935 INFO L87 Difference]: Start difference. First operand has 107 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 86 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) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2025-03-17 05:23:29,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:23:29,962 INFO L93 Difference]: Finished difference Result 211 states and 337 transitions. [2025-03-17 05:23:29,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 05:23:29,964 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 146 [2025-03-17 05:23:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:23:29,970 INFO L225 Difference]: With dead ends: 211 [2025-03-17 05:23:29,970 INFO L226 Difference]: Without dead ends: 105 [2025-03-17 05:23:29,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 05:23:29,974 INFO L435 NwaCegarLoop]: 154 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, 154 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 [2025-03-17 05:23:29,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:23:29,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-17 05:23:29,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-03-17 05:23:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.4047619047619047) internal successors, (118), 84 states have internal predecessors, (118), 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) [2025-03-17 05:23:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 156 transitions. [2025-03-17 05:23:30,005 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 156 transitions. Word has length 146 [2025-03-17 05:23:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:23:30,005 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 156 transitions. [2025-03-17 05:23:30,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2025-03-17 05:23:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 156 transitions. [2025-03-17 05:23:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-17 05:23:30,008 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:23:30,008 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] [2025-03-17 05:23:30,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 05:23:30,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 05:23:30,213 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:23:30,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:23:30,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1277733927, now seen corresponding path program 1 times [2025-03-17 05:23:30,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:23:30,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083419913] [2025-03-17 05:23:30,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:30,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:23:30,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 05:23:30,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 05:23:30,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:30,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-17 05:23:30,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:23:30,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083419913] [2025-03-17 05:23:30,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083419913] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:23:30,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396304560] [2025-03-17 05:23:30,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:30,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:23:30,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:23:30,701 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:23:30,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 05:23:30,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 05:23:30,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 05:23:30,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:30,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:30,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:23:30,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:23:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:23:30,971 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:23:30,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396304560] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:23:30,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:23:30,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-17 05:23:30,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38285732] [2025-03-17 05:23:30,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:23:30,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:23:30,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:23:30,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:23:30,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:23:30,974 INFO L87 Difference]: Start difference. First operand 105 states and 156 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-17 05:23:31,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:23:31,013 INFO L93 Difference]: Finished difference Result 212 states and 315 transitions. [2025-03-17 05:23:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:23:31,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 146 [2025-03-17 05:23:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:23:31,015 INFO L225 Difference]: With dead ends: 212 [2025-03-17 05:23:31,017 INFO L226 Difference]: Without dead ends: 108 [2025-03-17 05:23:31,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:23:31,018 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 1 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 442 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 [2025-03-17 05:23:31,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 442 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:23:31,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-03-17 05:23:31,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2025-03-17 05:23:31,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 86 states have internal predecessors, (120), 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) [2025-03-17 05:23:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 158 transitions. [2025-03-17 05:23:31,027 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 158 transitions. Word has length 146 [2025-03-17 05:23:31,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:23:31,028 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 158 transitions. [2025-03-17 05:23:31,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-17 05:23:31,028 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 158 transitions. [2025-03-17 05:23:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-17 05:23:31,030 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:23:31,031 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] [2025-03-17 05:23:31,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 05:23:31,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-17 05:23:31,231 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:23:31,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:23:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash -529720536, now seen corresponding path program 1 times [2025-03-17 05:23:31,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:23:31,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496296386] [2025-03-17 05:23:31,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:31,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:23:31,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 05:23:31,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 05:23:31,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:31,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-17 05:23:31,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:23:31,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496296386] [2025-03-17 05:23:31,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496296386] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:23:31,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221854942] [2025-03-17 05:23:31,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:31,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:23:31,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:23:31,493 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:23:31,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 05:23:31,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 05:23:31,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 05:23:31,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:31,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:31,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:23:31,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:23:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:23:31,754 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:23:31,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221854942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:23:31,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:23:31,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-17 05:23:31,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942379837] [2025-03-17 05:23:31,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:23:31,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:23:31,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:23:31,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:23:31,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:23:31,757 INFO L87 Difference]: Start difference. First operand 107 states and 158 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-17 05:23:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:23:31,803 INFO L93 Difference]: Finished difference Result 216 states and 319 transitions. [2025-03-17 05:23:31,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:23:31,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 146 [2025-03-17 05:23:31,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:23:31,806 INFO L225 Difference]: With dead ends: 216 [2025-03-17 05:23:31,806 INFO L226 Difference]: Without dead ends: 110 [2025-03-17 05:23:31,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:23:31,807 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 1 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 443 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 [2025-03-17 05:23:31,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 443 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:23:31,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-03-17 05:23:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2025-03-17 05:23:31,820 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) [2025-03-17 05:23:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 160 transitions. [2025-03-17 05:23:31,824 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 160 transitions. Word has length 146 [2025-03-17 05:23:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:23:31,824 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 160 transitions. [2025-03-17 05:23:31,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-17 05:23:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 160 transitions. [2025-03-17 05:23:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-17 05:23:31,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:23:31,826 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] [2025-03-17 05:23:31,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 05:23:32,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:23:32,034 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:23:32,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:23:32,035 INFO L85 PathProgramCache]: Analyzing trace with hash 357783145, now seen corresponding path program 1 times [2025-03-17 05:23:32,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:23:32,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371621063] [2025-03-17 05:23:32,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:32,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:23:32,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 05:23:32,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 05:23:32,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:32,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-17 05:23:32,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:23:32,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371621063] [2025-03-17 05:23:32,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371621063] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:23:32,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895877094] [2025-03-17 05:23:32,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:32,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:23:32,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:23:32,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:23:32,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 05:23:32,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 05:23:32,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 05:23:32,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:32,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:32,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:23:32,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:23:32,492 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:23:32,492 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:23:32,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895877094] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:23:32,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:23:32,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-17 05:23:32,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667015827] [2025-03-17 05:23:32,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:23:32,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:23:32,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:23:32,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:23:32,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:23:32,494 INFO L87 Difference]: Start difference. First operand 109 states and 160 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-17 05:23:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:23:32,521 INFO L93 Difference]: Finished difference Result 220 states and 323 transitions. [2025-03-17 05:23:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:23:32,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 146 [2025-03-17 05:23:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:23:32,523 INFO L225 Difference]: With dead ends: 220 [2025-03-17 05:23:32,523 INFO L226 Difference]: Without dead ends: 112 [2025-03-17 05:23:32,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:23:32,524 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 1 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 445 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 [2025-03-17 05:23:32,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 445 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:23:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-17 05:23:32,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2025-03-17 05:23:32,530 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) [2025-03-17 05:23:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 162 transitions. [2025-03-17 05:23:32,531 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 162 transitions. Word has length 146 [2025-03-17 05:23:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:23:32,532 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 162 transitions. [2025-03-17 05:23:32,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-17 05:23:32,532 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 162 transitions. [2025-03-17 05:23:32,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-17 05:23:32,534 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:23:32,534 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] [2025-03-17 05:23:32,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 05:23:32,734 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 [2025-03-17 05:23:32,735 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:23:32,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:23:32,735 INFO L85 PathProgramCache]: Analyzing trace with hash 358706666, now seen corresponding path program 1 times [2025-03-17 05:23:32,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:23:32,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055634949] [2025-03-17 05:23:32,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:32,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:23:32,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 05:23:32,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 05:23:32,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:32,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-17 05:23:32,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:23:32,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055634949] [2025-03-17 05:23:32,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055634949] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:23:32,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946468562] [2025-03-17 05:23:32,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:32,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:23:32,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:23:32,923 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) [2025-03-17 05:23:32,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 05:23:33,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 05:23:33,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 05:23:33,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:33,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:33,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:23:33,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:23:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:23:33,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:23:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946468562] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:23:33,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:23:33,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-17 05:23:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771451022] [2025-03-17 05:23:33,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:23:33,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:23:33,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:23:33,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:23:33,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:23:33,124 INFO L87 Difference]: Start difference. First operand 111 states and 162 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-17 05:23:33,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:23:33,148 INFO L93 Difference]: Finished difference Result 223 states and 326 transitions. [2025-03-17 05:23:33,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:23:33,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 146 [2025-03-17 05:23:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:23:33,150 INFO L225 Difference]: With dead ends: 223 [2025-03-17 05:23:33,151 INFO L226 Difference]: Without dead ends: 113 [2025-03-17 05:23:33,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:23:33,152 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 0 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 445 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 [2025-03-17 05:23:33,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 445 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:23:33,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-03-17 05:23:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2025-03-17 05:23:33,158 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) [2025-03-17 05:23:33,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 164 transitions. [2025-03-17 05:23:33,161 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 164 transitions. Word has length 146 [2025-03-17 05:23:33,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:23:33,162 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 164 transitions. [2025-03-17 05:23:33,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-17 05:23:33,162 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 164 transitions. [2025-03-17 05:23:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:23:33,164 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:23:33,164 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] [2025-03-17 05:23:33,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 05:23:33,367 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 [2025-03-17 05:23:33,368 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:23:33,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:23:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1432011919, now seen corresponding path program 1 times [2025-03-17 05:23:33,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:23:33,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730161486] [2025-03-17 05:23:33,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:33,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:23:33,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:23:33,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:23:33,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:33,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:23:34,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:23:34,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730161486] [2025-03-17 05:23:34,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730161486] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:23:34,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:23:34,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 05:23:34,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610866178] [2025-03-17 05:23:34,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:23:34,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 05:23:34,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:23:34,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 05:23:34,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:23:34,559 INFO L87 Difference]: Start difference. First operand 113 states and 164 transitions. Second operand has 8 states, 6 states have (on average 9.5) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:23:34,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:23:34,788 INFO L93 Difference]: Finished difference Result 318 states and 458 transitions. [2025-03-17 05:23:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 05:23:34,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.5) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 149 [2025-03-17 05:23:34,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:23:34,790 INFO L225 Difference]: With dead ends: 318 [2025-03-17 05:23:34,790 INFO L226 Difference]: Without dead ends: 206 [2025-03-17 05:23:34,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-17 05:23:34,791 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 113 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:23:34,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1260 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:23:34,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-03-17 05:23:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2025-03-17 05:23:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 166 states have (on average 1.3493975903614457) internal successors, (224), 167 states have internal predecessors, (224), 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) [2025-03-17 05:23:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 292 transitions. [2025-03-17 05:23:34,814 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 292 transitions. Word has length 149 [2025-03-17 05:23:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:23:34,814 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 292 transitions. [2025-03-17 05:23:34,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.5) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:23:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 292 transitions. [2025-03-17 05:23:34,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:23:34,818 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:23:34,818 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] [2025-03-17 05:23:34,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 05:23:34,818 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:23:34,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:23:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash 921477742, now seen corresponding path program 1 times [2025-03-17 05:23:34,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:23:34,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660467165] [2025-03-17 05:23:34,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:34,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:23:34,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:23:34,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:23:34,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:34,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:23:38,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:23:38,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660467165] [2025-03-17 05:23:38,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660467165] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:23:38,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:23:38,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 05:23:38,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261750633] [2025-03-17 05:23:38,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:23:38,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 05:23:38,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:23:38,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 05:23:38,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-17 05:23:38,719 INFO L87 Difference]: Start difference. First operand 203 states and 292 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:23:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:23:41,957 INFO L93 Difference]: Finished difference Result 718 states and 1029 transitions. [2025-03-17 05:23:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 05:23:41,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (19), 1 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 149 [2025-03-17 05:23:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:23:41,961 INFO L225 Difference]: With dead ends: 718 [2025-03-17 05:23:41,961 INFO L226 Difference]: Without dead ends: 516 [2025-03-17 05:23:41,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 05:23:41,963 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 266 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:23:41,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 827 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 05:23:41,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2025-03-17 05:23:42,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 508. [2025-03-17 05:23:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 415 states have (on average 1.342168674698795) internal successors, (557), 419 states have internal predecessors, (557), 86 states have call successors, (86), 6 states have call predecessors, (86), 6 states have return successors, (86), 82 states have call predecessors, (86), 86 states have call successors, (86) [2025-03-17 05:23:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 729 transitions. [2025-03-17 05:23:42,013 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 729 transitions. Word has length 149 [2025-03-17 05:23:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:23:42,013 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 729 transitions. [2025-03-17 05:23:42,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:23:42,014 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 729 transitions. [2025-03-17 05:23:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:23:42,015 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:23:42,015 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] [2025-03-17 05:23:42,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 05:23:42,015 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:23:42,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:23:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash 283317848, now seen corresponding path program 1 times [2025-03-17 05:23:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:23:42,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686374781] [2025-03-17 05:23:42,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:42,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:23:42,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:23:42,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:23:42,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:42,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-17 05:23:42,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:23:42,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686374781] [2025-03-17 05:23:42,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686374781] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:23:42,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660515362] [2025-03-17 05:23:42,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:42,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:23:42,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:23:42,144 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) [2025-03-17 05:23:42,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 05:23:42,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:23:42,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:23:42,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:42,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:23:42,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 05:23:42,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:23:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:23:42,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:23:42,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660515362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:23:42,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:23:42,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2025-03-17 05:23:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031123981] [2025-03-17 05:23:42,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:23:42,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:23:42,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:23:42,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:23:42,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 05:23:42,360 INFO L87 Difference]: Start difference. First operand 508 states and 729 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-03-17 05:23:42,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:23:42,408 INFO L93 Difference]: Finished difference Result 1003 states and 1439 transitions. [2025-03-17 05:23:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:23:42,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 149 [2025-03-17 05:23:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:23:42,411 INFO L225 Difference]: With dead ends: 1003 [2025-03-17 05:23:42,411 INFO L226 Difference]: Without dead ends: 523 [2025-03-17 05:23:42,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 05:23:42,415 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 0 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 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 [2025-03-17 05:23:42,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:23:42,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2025-03-17 05:23:42,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 513. [2025-03-17 05:23:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 420 states have (on average 1.338095238095238) internal successors, (562), 424 states have internal predecessors, (562), 86 states have call successors, (86), 6 states have call predecessors, (86), 6 states have return successors, (86), 82 states have call predecessors, (86), 86 states have call successors, (86) [2025-03-17 05:23:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 734 transitions. [2025-03-17 05:23:42,461 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 734 transitions. Word has length 149 [2025-03-17 05:23:42,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:23:42,462 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 734 transitions. [2025-03-17 05:23:42,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-03-17 05:23:42,463 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 734 transitions. [2025-03-17 05:23:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:23:42,464 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:23:42,464 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] [2025-03-17 05:23:42,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 05:23:42,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:23:42,669 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:23:42,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:23:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash -645197424, now seen corresponding path program 1 times [2025-03-17 05:23:42,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:23:42,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000014236] [2025-03-17 05:23:42,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:23:42,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:23:42,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:23:42,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:23:42,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:23:42,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat