./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 e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-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-?-e2fb8be-m [2025-03-08 16:16:55,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 16:16:55,310 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 16:16:55,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 16:16:55,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 16:16:55,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 16:16:55,339 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 16:16:55,339 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 16:16:55,339 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 16:16:55,339 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 16:16:55,340 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 16:16:55,340 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 16:16:55,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 16:16:55,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 16:16:55,340 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 16:16:55,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 16:16:55,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 16:16:55,341 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 16:16:55,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 16:16:55,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 16:16:55,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 16:16:55,342 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:16:55,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 16:16:55,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 16:16:55,342 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 [2025-03-08 16:16:55,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 16:16:55,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 16:16:55,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 16:16:55,584 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 16:16:55,584 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 16:16:55,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-40.i [2025-03-08 16:16:56,738 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7261e5990/4148677d4dd7405586a5f9e4cce6387a/FLAGf435d083e [2025-03-08 16:16:56,981 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 16:16:56,982 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-40.i [2025-03-08 16:16:56,990 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7261e5990/4148677d4dd7405586a5f9e4cce6387a/FLAGf435d083e [2025-03-08 16:16:57,007 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7261e5990/4148677d4dd7405586a5f9e4cce6387a [2025-03-08 16:16:57,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 16:16:57,010 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 16:16:57,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 16:16:57,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 16:16:57,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 16:16:57,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef3eaba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57, skipping insertion in model container [2025-03-08 16:16:57,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,032 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 16:16:57,145 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] [2025-03-08 16:16:57,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:16:57,193 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 16:16:57,200 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] [2025-03-08 16:16:57,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:16:57,245 INFO L204 MainTranslator]: Completed translation [2025-03-08 16:16:57,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57 WrapperNode [2025-03-08 16:16:57,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 16:16:57,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 16:16:57,247 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 16:16:57,247 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 16:16:57,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,290 INFO L138 Inliner]: procedures = 29, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 472 [2025-03-08 16:16:57,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 16:16:57,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 16:16:57,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 16:16:57,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 16:16:57,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,305 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,317 INFO L175 MemorySlicer]: Split 120 memory accesses to 8 slices as follows [2, 16, 14, 15, 27, 17, 10, 19]. 23 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 2, 2, 1, 3, 3, 2, 3]. The 17 writes are split as follows [0, 2, 2, 1, 3, 3, 2, 4]. [2025-03-08 16:16:57,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,328 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 16:16:57,336 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 16:16:57,336 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 16:16:57,336 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 16:16:57,337 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (1/1) ... [2025-03-08 16:16:57,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:16:57,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:16:57,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 16:16:57,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 16:16:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 16:16:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-08 16:16:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-08 16:16:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-08 16:16:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-08 16:16:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-08 16:16:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-08 16:16:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-08 16:16:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 16:16:57,383 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 16:16:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 16:16:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 16:16:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 16:16:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 16:16:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 16:16:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 16:16:57,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 16:16:57,508 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 16:16:57,510 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 16:16:57,893 INFO L1307 $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; [2025-03-08 16:16:57,930 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2025-03-08 16:16:57,931 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 16:16:57,946 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 16:16:57,946 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 16:16:57,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:16:57 BoogieIcfgContainer [2025-03-08 16:16:57,946 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 16:16:57,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 16:16:57,953 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 16:16:57,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 16:16:57,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:16:57" (1/3) ... [2025-03-08 16:16:57,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c6e9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:16:57, skipping insertion in model container [2025-03-08 16:16:57,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:16:57" (2/3) ... [2025-03-08 16:16:57,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c6e9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:16:57, skipping insertion in model container [2025-03-08 16:16:57,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:16:57" (3/3) ... [2025-03-08 16:16:57,959 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-40.i [2025-03-08 16:16:57,970 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 16:16:57,971 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-40.i that has 2 procedures, 112 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 16:16:58,012 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 16:16:58,022 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;@536e352, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 16:16:58,023 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 16:16:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 90 states have (on average 1.4111111111111112) internal successors, (127), 91 states have internal predecessors, (127), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:16:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 16:16:58,038 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:16:58,039 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:16:58,039 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:16:58,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:16:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1591007189, now seen corresponding path program 1 times [2025-03-08 16:16:58,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:16:58,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688500646] [2025-03-08 16:16:58,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:16:58,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:16:58,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:16:58,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:16:58,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:16:58,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:16:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-03-08 16:16:58,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:16:58,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688500646] [2025-03-08 16:16:58,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688500646] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:16:58,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688933892] [2025-03-08 16:16:58,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:16:58,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:16:58,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:16:58,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 16:16:58,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 16:16:58,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:16:58,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:16:58,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:16:58,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:16:58,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 16:16:58,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:16:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-03-08 16:16:58,627 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:16:58,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688933892] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:16:58,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:16:58,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 16:16:58,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835589238] [2025-03-08 16:16:58,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:16:58,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 16:16:58,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:16:58,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 16:16:58,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:16:58,647 INFO L87 Difference]: Start difference. First operand has 112 states, 90 states have (on average 1.4111111111111112) internal successors, (127), 91 states have internal predecessors, (127), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-08 16:16:58,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:16:58,670 INFO L93 Difference]: Finished difference Result 218 states and 344 transitions. [2025-03-08 16:16:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 16:16:58,672 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 150 [2025-03-08 16:16:58,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:16:58,676 INFO L225 Difference]: With dead ends: 218 [2025-03-08 16:16:58,677 INFO L226 Difference]: Without dead ends: 109 [2025-03-08 16:16:58,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:16:58,680 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:16:58,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:16:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-03-08 16:16:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-03-08 16:16:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.3863636363636365) internal successors, (122), 88 states have internal predecessors, (122), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:16:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 160 transitions. [2025-03-08 16:16:58,712 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 160 transitions. Word has length 150 [2025-03-08 16:16:58,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:16:58,712 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 160 transitions. [2025-03-08 16:16:58,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-08 16:16:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 160 transitions. [2025-03-08 16:16:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 16:16:58,721 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:16:58,721 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:16:58,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 16:16:58,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 16:16:58,925 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:16:58,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:16:58,926 INFO L85 PathProgramCache]: Analyzing trace with hash -56461782, now seen corresponding path program 1 times [2025-03-08 16:16:58,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:16:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49134817] [2025-03-08 16:16:58,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:16:58,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:16:58,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:16:59,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:16:59,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:16:59,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:16:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-08 16:16:59,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:16:59,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49134817] [2025-03-08 16:16:59,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49134817] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:16:59,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760187621] [2025-03-08 16:16:59,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:16:59,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:16:59,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:16:59,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 16:16:59,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 16:16:59,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:16:59,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:16:59,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:16:59,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:16:59,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:16:59,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:16:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:16:59,606 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:16:59,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760187621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:16:59,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:16:59,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 16:16:59,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532935847] [2025-03-08 16:16:59,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:16:59,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:16:59,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:16:59,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:16:59,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:16:59,609 INFO L87 Difference]: Start difference. First operand 109 states and 160 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:16:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:16:59,656 INFO L93 Difference]: Finished difference Result 218 states and 321 transitions. [2025-03-08 16:16:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:16:59,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2025-03-08 16:16:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:16:59,659 INFO L225 Difference]: With dead ends: 218 [2025-03-08 16:16:59,660 INFO L226 Difference]: Without dead ends: 112 [2025-03-08 16:16:59,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:16:59,662 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 1 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:16:59,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 454 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:16:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-08 16:16:59,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2025-03-08 16:16:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 90 states have internal predecessors, (124), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:16:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 162 transitions. [2025-03-08 16:16:59,677 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 162 transitions. Word has length 150 [2025-03-08 16:16:59,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:16:59,678 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 162 transitions. [2025-03-08 16:16:59,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:16:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 162 transitions. [2025-03-08 16:16:59,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 16:16:59,679 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:16:59,679 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:16:59,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 16:16:59,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-08 16:16:59,880 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:16:59,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:16:59,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1863916245, now seen corresponding path program 1 times [2025-03-08 16:16:59,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:16:59,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408536946] [2025-03-08 16:16:59,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:16:59,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:16:59,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:16:59,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:16:59,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:16:59,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-08 16:17:00,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:17:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408536946] [2025-03-08 16:17:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408536946] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:17:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778852094] [2025-03-08 16:17:00,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:00,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:17:00,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:17:00,133 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 16:17:00,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 16:17:00,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:17:00,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:17:00,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:00,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:00,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:17:00,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:17:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:17:00,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:17:00,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778852094] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:17:00,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:17:00,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 16:17:00,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314464369] [2025-03-08 16:17:00,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:17:00,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:17:00,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:17:00,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:17:00,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:17:00,341 INFO L87 Difference]: Start difference. First operand 111 states and 162 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:17:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:17:00,380 INFO L93 Difference]: Finished difference Result 222 states and 325 transitions. [2025-03-08 16:17:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:17:00,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2025-03-08 16:17:00,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:17:00,382 INFO L225 Difference]: With dead ends: 222 [2025-03-08 16:17:00,382 INFO L226 Difference]: Without dead ends: 114 [2025-03-08 16:17:00,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:17:00,385 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 1 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:17:00,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 455 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:17:00,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-03-08 16:17:00,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2025-03-08 16:17:00,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 92 states have internal predecessors, (126), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:17:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 164 transitions. [2025-03-08 16:17:00,398 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 164 transitions. Word has length 150 [2025-03-08 16:17:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:17:00,399 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 164 transitions. [2025-03-08 16:17:00,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:17:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 164 transitions. [2025-03-08 16:17:00,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 16:17:00,400 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:17:00,400 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:17:00,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 16:17:00,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:17:00,601 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:17:00,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:17:00,601 INFO L85 PathProgramCache]: Analyzing trace with hash -976412564, now seen corresponding path program 1 times [2025-03-08 16:17:00,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:17:00,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223647111] [2025-03-08 16:17:00,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:00,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:17:00,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:17:00,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:17:00,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:00,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-08 16:17:00,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:17:00,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223647111] [2025-03-08 16:17:00,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223647111] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:17:00,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279596153] [2025-03-08 16:17:00,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:00,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:17:00,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:17:00,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 16:17:00,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 16:17:00,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:17:00,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:17:00,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:00,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:00,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:17:00,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:17:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:17:01,001 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:17:01,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279596153] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:17:01,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:17:01,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 16:17:01,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827841898] [2025-03-08 16:17:01,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:17:01,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:17:01,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:17:01,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:17:01,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:17:01,004 INFO L87 Difference]: Start difference. First operand 113 states and 164 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:17:01,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:17:01,029 INFO L93 Difference]: Finished difference Result 226 states and 329 transitions. [2025-03-08 16:17:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:17:01,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2025-03-08 16:17:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:17:01,032 INFO L225 Difference]: With dead ends: 226 [2025-03-08 16:17:01,032 INFO L226 Difference]: Without dead ends: 116 [2025-03-08 16:17:01,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:17:01,033 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 1 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:17:01,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 457 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:17:01,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-08 16:17:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2025-03-08 16:17:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 94 states have (on average 1.3617021276595744) internal successors, (128), 94 states have internal predecessors, (128), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:17:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 166 transitions. [2025-03-08 16:17:01,043 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 166 transitions. Word has length 150 [2025-03-08 16:17:01,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:17:01,043 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 166 transitions. [2025-03-08 16:17:01,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:17:01,044 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 166 transitions. [2025-03-08 16:17:01,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 16:17:01,045 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:17:01,047 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:17:01,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 16:17:01,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:17:01,247 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:17:01,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:17:01,248 INFO L85 PathProgramCache]: Analyzing trace with hash -975489043, now seen corresponding path program 1 times [2025-03-08 16:17:01,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:17:01,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678411599] [2025-03-08 16:17:01,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:01,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:17:01,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:17:01,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:17:01,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:01,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-08 16:17:01,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:17:01,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678411599] [2025-03-08 16:17:01,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678411599] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:17:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692915886] [2025-03-08 16:17:01,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:01,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:17:01,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:17:01,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 16:17:01,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 16:17:01,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 16:17:01,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 16:17:01,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:01,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:01,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:17:01,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:17:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:17:01,590 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:17:01,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692915886] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:17:01,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:17:01,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-08 16:17:01,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100159613] [2025-03-08 16:17:01,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:17:01,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:17:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:17:01,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:17:01,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:17:01,592 INFO L87 Difference]: Start difference. First operand 115 states and 166 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:17:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:17:01,618 INFO L93 Difference]: Finished difference Result 229 states and 332 transitions. [2025-03-08 16:17:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:17:01,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2025-03-08 16:17:01,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:17:01,620 INFO L225 Difference]: With dead ends: 229 [2025-03-08 16:17:01,620 INFO L226 Difference]: Without dead ends: 117 [2025-03-08 16:17:01,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:17:01,621 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:17:01,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 457 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:17:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-08 16:17:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2025-03-08 16:17:01,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.3541666666666667) internal successors, (130), 96 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:17:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 168 transitions. [2025-03-08 16:17:01,630 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 168 transitions. Word has length 150 [2025-03-08 16:17:01,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:17:01,631 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 168 transitions. [2025-03-08 16:17:01,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:17:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 168 transitions. [2025-03-08 16:17:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:17:01,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:17:01,633 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:17:01,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 16:17:01,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:17:01,837 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:17:01,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:17:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1113688808, now seen corresponding path program 1 times [2025-03-08 16:17:01,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:17:01,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412818441] [2025-03-08 16:17:01,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:01,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:17:01,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:17:01,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:17:01,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:01,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-08 16:17:02,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:17:02,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412818441] [2025-03-08 16:17:02,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412818441] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:17:02,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733993234] [2025-03-08 16:17:02,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:02,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:17:02,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:17:02,017 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 16:17:02,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 16:17:02,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:17:02,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:17:02,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:02,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:02,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 16:17:02,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:17:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:17:02,235 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:17:02,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733993234] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:17:02,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:17:02,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2025-03-08 16:17:02,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213088601] [2025-03-08 16:17:02,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:17:02,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:17:02,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:17:02,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:17:02,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:17:02,236 INFO L87 Difference]: Start difference. First operand 117 states and 168 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:17:02,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:17:02,267 INFO L93 Difference]: Finished difference Result 234 states and 337 transitions. [2025-03-08 16:17:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:17:02,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2025-03-08 16:17:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:17:02,269 INFO L225 Difference]: With dead ends: 234 [2025-03-08 16:17:02,269 INFO L226 Difference]: Without dead ends: 120 [2025-03-08 16:17:02,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:17:02,271 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:17:02,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 605 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:17:02,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-03-08 16:17:02,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2025-03-08 16:17:02,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.3505154639175259) internal successors, (131), 97 states have internal predecessors, (131), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 16:17:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 169 transitions. [2025-03-08 16:17:02,280 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 169 transitions. Word has length 153 [2025-03-08 16:17:02,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:17:02,281 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 169 transitions. [2025-03-08 16:17:02,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:17:02,281 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 169 transitions. [2025-03-08 16:17:02,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:17:02,282 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:17:02,282 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:17:02,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 16:17:02,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:17:02,486 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:17:02,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:17:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash 35005263, now seen corresponding path program 1 times [2025-03-08 16:17:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:17:02,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207920021] [2025-03-08 16:17:02,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:02,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:17:02,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:17:02,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:17:02,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:02,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:17:03,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:17:03,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207920021] [2025-03-08 16:17:03,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207920021] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:17:03,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:17:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 16:17:03,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723497505] [2025-03-08 16:17:03,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:17:03,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 16:17:03,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:17:03,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 16:17:03,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:17:03,522 INFO L87 Difference]: Start difference. First operand 118 states and 169 transitions. Second operand has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 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) [2025-03-08 16:17:03,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:17:03,729 INFO L93 Difference]: Finished difference Result 328 states and 468 transitions. [2025-03-08 16:17:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 16:17:03,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 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 153 [2025-03-08 16:17:03,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:17:03,732 INFO L225 Difference]: With dead ends: 328 [2025-03-08 16:17:03,732 INFO L226 Difference]: Without dead ends: 213 [2025-03-08 16:17:03,733 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 [2025-03-08 16:17:03,733 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 114 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:17:03,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1294 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:17:03,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2025-03-08 16:17:03,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 210. [2025-03-08 16:17:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 173 states have (on average 1.3352601156069364) internal successors, (231), 174 states have internal predecessors, (231), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 16:17:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 299 transitions. [2025-03-08 16:17:03,756 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 299 transitions. Word has length 153 [2025-03-08 16:17:03,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:17:03,756 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 299 transitions. [2025-03-08 16:17:03,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 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) [2025-03-08 16:17:03,757 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 299 transitions. [2025-03-08 16:17:03,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:17:03,758 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:17:03,758 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:17:03,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 16:17:03,758 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:17:03,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:17:03,759 INFO L85 PathProgramCache]: Analyzing trace with hash -475528914, now seen corresponding path program 1 times [2025-03-08 16:17:03,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:17:03,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120783688] [2025-03-08 16:17:03,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:03,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:17:03,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:17:03,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:17:03,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:03,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:17:12,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:17:12,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120783688] [2025-03-08 16:17:12,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120783688] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:17:12,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:17:12,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 16:17:12,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105376386] [2025-03-08 16:17:12,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:17:12,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 16:17:12,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:17:12,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 16:17:12,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:17:12,717 INFO L87 Difference]: Start difference. First operand 210 states and 299 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 9 states have internal predecessors, (61), 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) [2025-03-08 16:17:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:17:16,365 INFO L93 Difference]: Finished difference Result 738 states and 1049 transitions. [2025-03-08 16:17:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 16:17:16,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 9 states have internal predecessors, (61), 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 153 [2025-03-08 16:17:16,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:17:16,370 INFO L225 Difference]: With dead ends: 738 [2025-03-08 16:17:16,372 INFO L226 Difference]: Without dead ends: 531 [2025-03-08 16:17:16,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-08 16:17:16,373 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 204 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-08 16:17:16,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1002 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-08 16:17:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2025-03-08 16:17:16,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 523. [2025-03-08 16:17:16,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 430 states have (on average 1.330232558139535) internal successors, (572), 434 states have internal predecessors, (572), 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) [2025-03-08 16:17:16,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 744 transitions. [2025-03-08 16:17:16,426 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 744 transitions. Word has length 153 [2025-03-08 16:17:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:17:16,428 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 744 transitions. [2025-03-08 16:17:16,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 9 states have internal predecessors, (61), 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) [2025-03-08 16:17:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 744 transitions. [2025-03-08 16:17:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:17:16,430 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:17:16,430 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:17:16,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 16:17:16,431 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:17:16,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:17:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2042204080, now seen corresponding path program 1 times [2025-03-08 16:17:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:17:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139145200] [2025-03-08 16:17:16,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:17:16,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:17:16,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:17:16,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:16,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:17:20,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:17:20,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139145200] [2025-03-08 16:17:20,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139145200] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:17:20,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:17:20,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 16:17:20,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298862974] [2025-03-08 16:17:20,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:17:20,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 16:17:20,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:17:20,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 16:17:20,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:17:20,829 INFO L87 Difference]: Start difference. First operand 523 states and 744 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 9 states have internal predecessors, (61), 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) [2025-03-08 16:17:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:17:24,163 INFO L93 Difference]: Finished difference Result 1100 states and 1563 transitions. [2025-03-08 16:17:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 16:17:24,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 9 states have internal predecessors, (61), 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 153 [2025-03-08 16:17:24,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:17:24,166 INFO L225 Difference]: With dead ends: 1100 [2025-03-08 16:17:24,166 INFO L226 Difference]: Without dead ends: 608 [2025-03-08 16:17:24,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-03-08 16:17:24,170 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 215 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-08 16:17:24,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1202 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-08 16:17:24,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2025-03-08 16:17:24,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 573. [2025-03-08 16:17:24,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 480 states have (on average 1.3395833333333333) internal successors, (643), 484 states have internal predecessors, (643), 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) [2025-03-08 16:17:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 815 transitions. [2025-03-08 16:17:24,206 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 815 transitions. Word has length 153 [2025-03-08 16:17:24,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:17:24,206 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 815 transitions. [2025-03-08 16:17:24,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 9 states have internal predecessors, (61), 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) [2025-03-08 16:17:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 815 transitions. [2025-03-08 16:17:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:17:24,208 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:17:24,208 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:17:24,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 16:17:24,208 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:17:24,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:17:24,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1742229039, now seen corresponding path program 1 times [2025-03-08 16:17:24,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:17:24,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008374497] [2025-03-08 16:17:24,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:24,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:17:24,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:17:24,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:17:24,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:24,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:17:24,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:17:24,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008374497] [2025-03-08 16:17:24,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008374497] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:17:24,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:17:24,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 16:17:24,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220062582] [2025-03-08 16:17:24,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:17:24,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 16:17:24,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:17:24,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 16:17:24,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:17:24,590 INFO L87 Difference]: Start difference. First operand 573 states and 815 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 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) [2025-03-08 16:17:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:17:24,772 INFO L93 Difference]: Finished difference Result 1204 states and 1705 transitions. [2025-03-08 16:17:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 16:17:24,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 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 153 [2025-03-08 16:17:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:17:24,777 INFO L225 Difference]: With dead ends: 1204 [2025-03-08 16:17:24,777 INFO L226 Difference]: Without dead ends: 634 [2025-03-08 16:17:24,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:17:24,778 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 114 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:17:24,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1414 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:17:24,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2025-03-08 16:17:24,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 429. [2025-03-08 16:17:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 360 states have (on average 1.3527777777777779) internal successors, (487), 362 states have internal predecessors, (487), 62 states have call successors, (62), 6 states have call predecessors, (62), 6 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-08 16:17:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 611 transitions. [2025-03-08 16:17:24,819 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 611 transitions. Word has length 153 [2025-03-08 16:17:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:17:24,819 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 611 transitions. [2025-03-08 16:17:24,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 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) [2025-03-08 16:17:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 611 transitions. [2025-03-08 16:17:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-08 16:17:24,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:17:24,822 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:17:24,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 16:17:24,822 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:17:24,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:17:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash 757138086, now seen corresponding path program 1 times [2025-03-08 16:17:24,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:17:24,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525627557] [2025-03-08 16:17:24,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:24,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:17:24,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-08 16:17:24,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-08 16:17:24,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:24,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:17:24,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:17:24,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525627557] [2025-03-08 16:17:24,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525627557] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:17:24,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:17:24,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:17:24,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754488684] [2025-03-08 16:17:24,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:17:24,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:17:24,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:17:24,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:17:24,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:17:24,926 INFO L87 Difference]: Start difference. First operand 429 states and 611 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:17:25,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:17:25,111 INFO L93 Difference]: Finished difference Result 970 states and 1374 transitions. [2025-03-08 16:17:25,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:17:25,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 154 [2025-03-08 16:17:25,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:17:25,115 INFO L225 Difference]: With dead ends: 970 [2025-03-08 16:17:25,115 INFO L226 Difference]: Without dead ends: 584 [2025-03-08 16:17:25,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:17:25,118 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 128 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:17:25,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 716 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:17:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2025-03-08 16:17:25,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 487. [2025-03-08 16:17:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 406 states have (on average 1.3399014778325122) internal successors, (544), 408 states have internal predecessors, (544), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2025-03-08 16:17:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 688 transitions. [2025-03-08 16:17:25,155 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 688 transitions. Word has length 154 [2025-03-08 16:17:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:17:25,155 INFO L471 AbstractCegarLoop]: Abstraction has 487 states and 688 transitions. [2025-03-08 16:17:25,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 16:17:25,156 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 688 transitions. [2025-03-08 16:17:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-08 16:17:25,157 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:17:25,157 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:17:25,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 16:17:25,157 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:17:25,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:17:25,158 INFO L85 PathProgramCache]: Analyzing trace with hash 832900753, now seen corresponding path program 1 times [2025-03-08 16:17:25,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:17:25,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344556464] [2025-03-08 16:17:25,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:25,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:17:25,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 16:17:25,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 16:17:25,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:25,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:17:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-08 16:17:27,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:17:27,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344556464] [2025-03-08 16:17:27,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344556464] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:17:27,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:17:27,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 16:17:27,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487999733] [2025-03-08 16:17:27,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:17:27,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 16:17:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:17:27,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 16:17:27,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:17:27,981 INFO L87 Difference]: Start difference. First operand 487 states and 688 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 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) [2025-03-08 16:17:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:17:30,129 INFO L93 Difference]: Finished difference Result 788 states and 1109 transitions. [2025-03-08 16:17:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 16:17:30,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 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 155 [2025-03-08 16:17:30,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:17:30,133 INFO L225 Difference]: With dead ends: 788 [2025-03-08 16:17:30,134 INFO L226 Difference]: Without dead ends: 608 [2025-03-08 16:17:30,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:17:30,135 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 92 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:17:30,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 973 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 16:17:30,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2025-03-08 16:17:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 546. [2025-03-08 16:17:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 455 states have (on average 1.3318681318681318) internal successors, (606), 458 states have internal predecessors, (606), 81 states have call successors, (81), 9 states have call predecessors, (81), 9 states have return successors, (81), 78 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-08 16:17:30,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 768 transitions. [2025-03-08 16:17:30,176 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 768 transitions. Word has length 155 [2025-03-08 16:17:30,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:17:30,177 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 768 transitions. [2025-03-08 16:17:30,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 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) [2025-03-08 16:17:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 768 transitions. [2025-03-08 16:17:30,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-08 16:17:30,178 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:17:30,178 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:17:30,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 16:17:30,179 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:17:30,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:17:30,179 INFO L85 PathProgramCache]: Analyzing trace with hash -733774413, now seen corresponding path program 1 times [2025-03-08 16:17:30,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:17:30,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327093848] [2025-03-08 16:17:30,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:17:30,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:17:30,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 16:17:30,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 16:17:30,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:17:30,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat