./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 1c93cc267f3fa9111282ae2218d996ece9eec8d2b16bef9815b7e16fff94a7e6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 15:57:43,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 15:57:43,534 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 15:57:43,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 15:57:43,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 15:57:43,563 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 15:57:43,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 15:57:43,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 15:57:43,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 15:57:43,565 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 15:57:43,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 15:57:43,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 15:57:43,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 15:57:43,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 15:57:43,567 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 15:57:43,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 15:57:43,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 15:57:43,567 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 15:57:43,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 15:57:43,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 15:57:43,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 15:57:43,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 15:57:43,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 15:57:43,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 15:57:43,568 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 15:57:43,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 15:57:43,568 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 15:57:43,568 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 15:57:43,568 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 15:57:43,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 15:57:43,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 15:57:43,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 15:57:43,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 15:57:43,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 15:57:43,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 15:57:43,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 15:57:43,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 15:57:43,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 15:57:43,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 15:57:43,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 15:57:43,570 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 15:57:43,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 15:57:43,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 15:57:43,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 15:57:43,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 15:57:43,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 15:57:43,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 15:57:43,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 15:57:43,571 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-jdk21/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 -> 1c93cc267f3fa9111282ae2218d996ece9eec8d2b16bef9815b7e16fff94a7e6 [2025-01-09 15:57:43,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 15:57:43,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 15:57:43,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 15:57:43,775 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 15:57:43,775 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 15:57:43,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i [2025-01-09 15:57:45,017 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/84a655874/8658df24f4484dbca14834480bb2bd06/FLAG3c1dad282 [2025-01-09 15:57:45,304 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 15:57:45,305 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i [2025-01-09 15:57:45,312 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/84a655874/8658df24f4484dbca14834480bb2bd06/FLAG3c1dad282 [2025-01-09 15:57:45,589 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/84a655874/8658df24f4484dbca14834480bb2bd06 [2025-01-09 15:57:45,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 15:57:45,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 15:57:45,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 15:57:45,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 15:57:45,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 15:57:45,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8f7f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45, skipping insertion in model container [2025-01-09 15:57:45,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 15:57:45,740 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i[916,929] [2025-01-09 15:57:45,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 15:57:45,803 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 15:57:45,819 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i[916,929] [2025-01-09 15:57:45,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 15:57:45,881 INFO L204 MainTranslator]: Completed translation [2025-01-09 15:57:45,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45 WrapperNode [2025-01-09 15:57:45,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 15:57:45,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 15:57:45,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 15:57:45,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 15:57:45,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,945 INFO L138 Inliner]: procedures = 30, calls = 188, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 597 [2025-01-09 15:57:45,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 15:57:45,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 15:57:45,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 15:57:45,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 15:57:45,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,968 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-01-09 15:57:45,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,987 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:45,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:46,002 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:46,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 15:57:46,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 15:57:46,005 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 15:57:46,005 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 15:57:46,006 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (1/1) ... [2025-01-09 15:57:46,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 15:57:46,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:57:46,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 15:57:46,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 15:57:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 15:57:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-01-09 15:57:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-01-09 15:57:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-01-09 15:57:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-09 15:57:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-01-09 15:57:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-09 15:57:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 15:57:46,070 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 15:57:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 15:57:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 15:57:46,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 15:57:46,177 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 15:57:46,178 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 15:57:46,608 INFO L? ?]: Removed 188 outVars from TransFormulas that were not future-live. [2025-01-09 15:57:46,608 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 15:57:46,618 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 15:57:46,620 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 15:57:46,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:57:46 BoogieIcfgContainer [2025-01-09 15:57:46,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 15:57:46,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 15:57:46,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 15:57:46,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 15:57:46,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:57:45" (1/3) ... [2025-01-09 15:57:46,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419d857d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:57:46, skipping insertion in model container [2025-01-09 15:57:46,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:57:45" (2/3) ... [2025-01-09 15:57:46,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419d857d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:57:46, skipping insertion in model container [2025-01-09 15:57:46,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:57:46" (3/3) ... [2025-01-09 15:57:46,628 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-39.i [2025-01-09 15:57:46,638 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 15:57:46,640 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-39.i that has 2 procedures, 119 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 15:57:46,681 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 15:57:46,688 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;@32b6c627, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 15:57:46,688 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 15:57:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 100 states have (on average 1.43) internal successors, (143), 101 states have internal predecessors, (143), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:57:46,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-01-09 15:57:46,697 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:57:46,698 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:57:46,698 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:57:46,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:57:46,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1693688470, now seen corresponding path program 1 times [2025-01-09 15:57:46,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:57:46,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094241502] [2025-01-09 15:57:46,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:57:46,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:57:46,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-01-09 15:57:46,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-01-09 15:57:46,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:57:46,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:57:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2025-01-09 15:57:46,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:57:46,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094241502] [2025-01-09 15:57:46,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094241502] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:57:46,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033283889] [2025-01-09 15:57:46,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:57:46,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:57:46,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:57:46,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:57:46,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 15:57:47,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-01-09 15:57:47,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-01-09 15:57:47,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:57:47,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:57:47,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 15:57:47,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:57:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2025-01-09 15:57:47,157 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:57:47,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033283889] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:57:47,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:57:47,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 15:57:47,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435601881] [2025-01-09 15:57:47,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:57:47,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 15:57:47,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:57:47,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 15:57:47,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 15:57:47,176 INFO L87 Difference]: Start difference. First operand has 119 states, 100 states have (on average 1.43) internal successors, (143), 101 states have internal predecessors, (143), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:57:47,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:57:47,201 INFO L93 Difference]: Finished difference Result 232 states and 361 transitions. [2025-01-09 15:57:47,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 15:57:47,202 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2025-01-09 15:57:47,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:57:47,206 INFO L225 Difference]: With dead ends: 232 [2025-01-09 15:57:47,206 INFO L226 Difference]: Without dead ends: 116 [2025-01-09 15:57:47,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 15:57:47,210 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 15:57:47,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 15:57:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-01-09 15:57:47,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2025-01-09 15:57:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.4081632653061225) internal successors, (138), 98 states have internal predecessors, (138), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:57:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 170 transitions. [2025-01-09 15:57:47,234 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 170 transitions. Word has length 128 [2025-01-09 15:57:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:57:47,234 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 170 transitions. [2025-01-09 15:57:47,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:57:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 170 transitions. [2025-01-09 15:57:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-01-09 15:57:47,236 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:57:47,236 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:57:47,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 15:57:47,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 15:57:47,437 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:57:47,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:57:47,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1951169754, now seen corresponding path program 1 times [2025-01-09 15:57:47,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:57:47,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275014204] [2025-01-09 15:57:47,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:57:47,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:57:47,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-01-09 15:57:47,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-01-09 15:57:47,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:57:47,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:57:51,344 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:57:51,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:57:51,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275014204] [2025-01-09 15:57:51,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275014204] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:57:51,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:57:51,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-01-09 15:57:51,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520782606] [2025-01-09 15:57:51,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:57:51,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 15:57:51,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:57:51,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 15:57:51,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2025-01-09 15:57:51,346 INFO L87 Difference]: Start difference. First operand 116 states and 170 transitions. Second operand has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:57:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:57:52,833 INFO L93 Difference]: Finished difference Result 328 states and 481 transitions. [2025-01-09 15:57:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 15:57:52,833 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2025-01-09 15:57:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:57:52,835 INFO L225 Difference]: With dead ends: 328 [2025-01-09 15:57:52,835 INFO L226 Difference]: Without dead ends: 215 [2025-01-09 15:57:52,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2025-01-09 15:57:52,836 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 301 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:57:52,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1107 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-09 15:57:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-01-09 15:57:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 126. [2025-01-09 15:57:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 108 states have (on average 1.4074074074074074) internal successors, (152), 108 states have internal predecessors, (152), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:57:52,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 184 transitions. [2025-01-09 15:57:52,845 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 184 transitions. Word has length 128 [2025-01-09 15:57:52,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:57:52,845 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 184 transitions. [2025-01-09 15:57:52,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:57:52,846 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 184 transitions. [2025-01-09 15:57:52,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-01-09 15:57:52,847 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:57:52,847 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:57:52,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 15:57:52,847 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:57:52,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:57:52,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1663739172, now seen corresponding path program 1 times [2025-01-09 15:57:52,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:57:52,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588066894] [2025-01-09 15:57:52,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:57:52,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:57:52,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-01-09 15:57:52,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-01-09 15:57:52,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:57:52,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:57:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:57:53,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:57:53,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588066894] [2025-01-09 15:57:53,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588066894] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:57:53,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:57:53,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 15:57:53,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167361230] [2025-01-09 15:57:53,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:57:53,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:57:53,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:57:53,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:57:53,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:57:53,644 INFO L87 Difference]: Start difference. First operand 126 states and 184 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:57:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:57:53,926 INFO L93 Difference]: Finished difference Result 319 states and 466 transitions. [2025-01-09 15:57:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:57:53,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 128 [2025-01-09 15:57:53,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:57:53,928 INFO L225 Difference]: With dead ends: 319 [2025-01-09 15:57:53,928 INFO L226 Difference]: Without dead ends: 196 [2025-01-09 15:57:53,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:57:53,929 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 92 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:57:53,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 458 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:57:53,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-01-09 15:57:53,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2025-01-09 15:57:53,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 170 states have (on average 1.4176470588235295) internal successors, (241), 171 states have internal predecessors, (241), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2025-01-09 15:57:53,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 281 transitions. [2025-01-09 15:57:53,939 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 281 transitions. Word has length 128 [2025-01-09 15:57:53,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:57:53,940 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 281 transitions. [2025-01-09 15:57:53,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:57:53,940 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 281 transitions. [2025-01-09 15:57:53,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-01-09 15:57:53,941 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:57:53,941 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:57:53,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 15:57:53,941 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:57:53,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:57:53,942 INFO L85 PathProgramCache]: Analyzing trace with hash 362821852, now seen corresponding path program 1 times [2025-01-09 15:57:53,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:57:53,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934310527] [2025-01-09 15:57:53,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:57:53,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:57:53,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-01-09 15:57:53,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-01-09 15:57:53,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:57:53,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:57:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:57:54,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:57:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934310527] [2025-01-09 15:57:54,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934310527] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:57:54,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:57:54,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 15:57:54,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422289854] [2025-01-09 15:57:54,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:57:54,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 15:57:54,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:57:54,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 15:57:54,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:57:54,627 INFO L87 Difference]: Start difference. First operand 193 states and 281 transitions. Second operand has 7 states, 5 states have (on average 10.2) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:57:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:57:55,097 INFO L93 Difference]: Finished difference Result 390 states and 564 transitions. [2025-01-09 15:57:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 15:57:55,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.2) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2025-01-09 15:57:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:57:55,099 INFO L225 Difference]: With dead ends: 390 [2025-01-09 15:57:55,099 INFO L226 Difference]: Without dead ends: 200 [2025-01-09 15:57:55,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:57:55,100 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 90 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 15:57:55,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 690 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 15:57:55,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-01-09 15:57:55,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 152. [2025-01-09 15:57:55,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.406015037593985) internal successors, (187), 133 states have internal predecessors, (187), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:57:55,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 219 transitions. [2025-01-09 15:57:55,113 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 219 transitions. Word has length 128 [2025-01-09 15:57:55,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:57:55,114 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 219 transitions. [2025-01-09 15:57:55,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.2) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:57:55,114 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 219 transitions. [2025-01-09 15:57:55,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-01-09 15:57:55,115 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:57:55,115 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:57:55,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 15:57:55,116 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:57:55,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:57:55,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1042880222, now seen corresponding path program 1 times [2025-01-09 15:57:55,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:57:55,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29026899] [2025-01-09 15:57:55,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:57:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:57:55,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-01-09 15:57:55,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-01-09 15:57:55,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:57:55,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:57:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:57:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:57:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29026899] [2025-01-09 15:57:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29026899] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:57:56,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:57:56,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 15:57:56,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139867966] [2025-01-09 15:57:56,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:57:56,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 15:57:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:57:56,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 15:57:56,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-01-09 15:57:56,764 INFO L87 Difference]: Start difference. First operand 152 states and 219 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:57:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:57:58,019 INFO L93 Difference]: Finished difference Result 356 states and 515 transitions. [2025-01-09 15:57:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 15:57:58,019 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 128 [2025-01-09 15:57:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:57:58,020 INFO L225 Difference]: With dead ends: 356 [2025-01-09 15:57:58,020 INFO L226 Difference]: Without dead ends: 207 [2025-01-09 15:57:58,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2025-01-09 15:57:58,021 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 193 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:57:58,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 683 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-09 15:57:58,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2025-01-09 15:57:58,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 171. [2025-01-09 15:57:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 152 states have (on average 1.4210526315789473) internal successors, (216), 152 states have internal predecessors, (216), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:57:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 248 transitions. [2025-01-09 15:57:58,029 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 248 transitions. Word has length 128 [2025-01-09 15:57:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:57:58,029 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 248 transitions. [2025-01-09 15:57:58,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:57:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 248 transitions. [2025-01-09 15:57:58,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:57:58,031 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:57:58,031 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:57:58,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 15:57:58,031 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:57:58,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:57:58,031 INFO L85 PathProgramCache]: Analyzing trace with hash -334839119, now seen corresponding path program 1 times [2025-01-09 15:57:58,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:57:58,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995523430] [2025-01-09 15:57:58,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:57:58,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:57:58,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:57:58,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:57:58,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:57:58,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat