./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.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_floatingpointinfluence_no-floats_file-67.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 84717a5c2896f013826b4f3140ab30111b65bd200eaa9dc30a2a86e9a93af713 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 12:44:53,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 12:44:53,586 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 12:44:53,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 12:44:53,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 12:44:53,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 12:44:53,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 12:44:53,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 12:44:53,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 12:44:53,617 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 12:44:53,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 12:44:53,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 12:44:53,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 12:44:53,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 12:44:53,617 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 12:44:53,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 12:44:53,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 12:44:53,617 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 12:44:53,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 12:44:53,618 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 12:44:53,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 12:44:53,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 12:44:53,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 12:44:53,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 12:44:53,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 12:44:53,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 12:44:53,621 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 12:44:53,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 12:44:53,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 12:44:53,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 12:44:53,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 12:44:53,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 12:44:53,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 12:44:53,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 12:44:53,622 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 -> 84717a5c2896f013826b4f3140ab30111b65bd200eaa9dc30a2a86e9a93af713 [2025-01-09 12:44:53,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 12:44:53,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 12:44:53,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 12:44:53,886 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 12:44:53,886 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 12:44:53,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i [2025-01-09 12:44:55,050 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ef871ef20/d53d77d9f6484540a87aac1e5ff46ecd/FLAG3b72865c4 [2025-01-09 12:44:55,292 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 12:44:55,293 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i [2025-01-09 12:44:55,317 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ef871ef20/d53d77d9f6484540a87aac1e5ff46ecd/FLAG3b72865c4 [2025-01-09 12:44:55,604 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ef871ef20/d53d77d9f6484540a87aac1e5ff46ecd [2025-01-09 12:44:55,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 12:44:55,607 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 12:44:55,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 12:44:55,608 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 12:44:55,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 12:44:55,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405d5fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55, skipping insertion in model container [2025-01-09 12:44:55,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,621 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 12:44:55,720 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_floatingpointinfluence_no-floats_file-67.i[916,929] [2025-01-09 12:44:55,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 12:44:55,757 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 12:44:55,763 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_floatingpointinfluence_no-floats_file-67.i[916,929] [2025-01-09 12:44:55,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 12:44:55,783 INFO L204 MainTranslator]: Completed translation [2025-01-09 12:44:55,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55 WrapperNode [2025-01-09 12:44:55,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 12:44:55,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 12:44:55,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 12:44:55,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 12:44:55,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,806 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 121 [2025-01-09 12:44:55,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 12:44:55,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 12:44:55,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 12:44:55,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 12:44:55,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,832 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 12:44:55,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,835 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 12:44:55,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 12:44:55,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 12:44:55,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 12:44:55,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (1/1) ... [2025-01-09 12:44:55,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 12:44:55,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 12:44:55,876 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 12:44:55,879 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 12:44:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 12:44:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 12:44:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 12:44:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 12:44:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 12:44:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 12:44:55,949 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 12:44:55,951 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 12:44:56,106 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-01-09 12:44:56,106 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 12:44:56,111 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 12:44:56,111 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 12:44:56,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:44:56 BoogieIcfgContainer [2025-01-09 12:44:56,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 12:44:56,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 12:44:56,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 12:44:56,116 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 12:44:56,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 12:44:55" (1/3) ... [2025-01-09 12:44:56,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ef5888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:44:56, skipping insertion in model container [2025-01-09 12:44:56,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:44:55" (2/3) ... [2025-01-09 12:44:56,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ef5888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:44:56, skipping insertion in model container [2025-01-09 12:44:56,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:44:56" (3/3) ... [2025-01-09 12:44:56,118 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-67.i [2025-01-09 12:44:56,127 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 12:44:56,128 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_no-floats_file-67.i that has 2 procedures, 51 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 12:44:56,159 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 12:44:56,166 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;@2a39c5a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 12:44:56,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 12:44:56,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-09 12:44:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-01-09 12:44:56,173 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 12:44:56,174 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:56,174 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 12:44:56,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 12:44:56,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1508646928, now seen corresponding path program 1 times [2025-01-09 12:44:56,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 12:44:56,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806554293] [2025-01-09 12:44:56,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 12:44:56,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 12:44:56,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-09 12:44:56,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-09 12:44:56,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 12:44:56,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 12:44:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-01-09 12:44:56,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 12:44:56,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806554293] [2025-01-09 12:44:56,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806554293] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 12:44:56,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569904692] [2025-01-09 12:44:56,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 12:44:56,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 12:44:56,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 12:44:56,336 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 12:44:56,338 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 12:44:56,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-09 12:44:56,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-09 12:44:56,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 12:44:56,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 12:44:56,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 12:44:56,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 12:44:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-01-09 12:44:56,475 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 12:44:56,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569904692] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 12:44:56,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 12:44:56,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 12:44:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698544935] [2025-01-09 12:44:56,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 12:44:56,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 12:44:56,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 12:44:56,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 12:44:56,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 12:44:56,493 INFO L87 Difference]: Start difference. First operand has 51 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-01-09 12:44:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 12:44:56,507 INFO L93 Difference]: Finished difference Result 96 states and 154 transitions. [2025-01-09 12:44:56,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 12:44:56,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 88 [2025-01-09 12:44:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 12:44:56,512 INFO L225 Difference]: With dead ends: 96 [2025-01-09 12:44:56,512 INFO L226 Difference]: Without dead ends: 48 [2025-01-09 12:44:56,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 89 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 12:44:56,516 INFO L435 NwaCegarLoop]: 68 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, 68 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 12:44:56,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 12:44:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-09 12:44:56,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-01-09 12:44:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-09 12:44:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2025-01-09 12:44:56,545 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 88 [2025-01-09 12:44:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 12:44:56,546 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2025-01-09 12:44:56,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-01-09 12:44:56,546 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2025-01-09 12:44:56,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-01-09 12:44:56,548 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 12:44:56,549 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:56,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 12:44:56,753 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 12:44:56,753 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 12:44:56,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 12:44:56,754 INFO L85 PathProgramCache]: Analyzing trace with hash -961577198, now seen corresponding path program 1 times [2025-01-09 12:44:56,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 12:44:56,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909789119] [2025-01-09 12:44:56,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 12:44:56,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 12:44:56,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-09 12:44:56,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-09 12:44:56,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 12:44:56,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 12:44:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-01-09 12:44:57,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 12:44:57,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909789119] [2025-01-09 12:44:57,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909789119] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 12:44:57,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 12:44:57,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 12:44:57,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842916216] [2025-01-09 12:44:57,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 12:44:57,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 12:44:57,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 12:44:57,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 12:44:57,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 12:44:57,184 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-01-09 12:44:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 12:44:57,287 INFO L93 Difference]: Finished difference Result 113 states and 160 transitions. [2025-01-09 12:44:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 12:44:57,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 88 [2025-01-09 12:44:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 12:44:57,289 INFO L225 Difference]: With dead ends: 113 [2025-01-09 12:44:57,289 INFO L226 Difference]: Without dead ends: 68 [2025-01-09 12:44:57,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 12:44:57,290 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 20 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 12:44:57,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 161 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 12:44:57,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-01-09 12:44:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2025-01-09 12:44:57,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 states have internal predecessors, (57), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-09 12:44:57,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2025-01-09 12:44:57,301 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 83 transitions. Word has length 88 [2025-01-09 12:44:57,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 12:44:57,302 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 83 transitions. [2025-01-09 12:44:57,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-01-09 12:44:57,303 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 83 transitions. [2025-01-09 12:44:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-01-09 12:44:57,306 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 12:44:57,306 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:57,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 12:44:57,307 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 12:44:57,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 12:44:57,307 INFO L85 PathProgramCache]: Analyzing trace with hash -703411760, now seen corresponding path program 1 times [2025-01-09 12:44:57,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 12:44:57,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15925716] [2025-01-09 12:44:57,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 12:44:57,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 12:44:57,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-09 12:44:57,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-09 12:44:57,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 12:44:57,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 12:44:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-01-09 12:44:57,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 12:44:57,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15925716] [2025-01-09 12:44:57,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15925716] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 12:44:57,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 12:44:57,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 12:44:57,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426588847] [2025-01-09 12:44:57,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 12:44:57,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 12:44:57,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 12:44:57,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 12:44:57,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 12:44:57,559 INFO L87 Difference]: Start difference. First operand 58 states and 83 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-01-09 12:44:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 12:44:57,627 INFO L93 Difference]: Finished difference Result 114 states and 164 transitions. [2025-01-09 12:44:57,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 12:44:57,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 88 [2025-01-09 12:44:57,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 12:44:57,632 INFO L225 Difference]: With dead ends: 114 [2025-01-09 12:44:57,632 INFO L226 Difference]: Without dead ends: 59 [2025-01-09 12:44:57,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 12:44:57,633 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 20 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 12:44:57,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 137 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 12:44:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-01-09 12:44:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2025-01-09 12:44:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-09 12:44:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2025-01-09 12:44:57,642 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 88 [2025-01-09 12:44:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 12:44:57,643 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 67 transitions. [2025-01-09 12:44:57,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-01-09 12:44:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 67 transitions. [2025-01-09 12:44:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-01-09 12:44:57,644 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 12:44:57,644 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:57,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 12:44:57,644 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 12:44:57,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 12:44:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1206175251, now seen corresponding path program 1 times [2025-01-09 12:44:57,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 12:44:57,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930319338] [2025-01-09 12:44:57,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 12:44:57,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 12:44:57,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-01-09 12:44:57,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-01-09 12:44:57,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 12:44:57,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 12:46:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-01-09 12:46:12,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 12:46:12,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930319338] [2025-01-09 12:46:12,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930319338] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 12:46:12,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 12:46:12,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-01-09 12:46:12,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799704452] [2025-01-09 12:46:12,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 12:46:12,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 12:46:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 12:46:12,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 12:46:12,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-01-09 12:46:12,348 INFO L87 Difference]: Start difference. First operand 48 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-01-09 12:46:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 12:46:14,074 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2025-01-09 12:46:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 12:46:14,075 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 90 [2025-01-09 12:46:14,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 12:46:14,076 INFO L225 Difference]: With dead ends: 99 [2025-01-09 12:46:14,076 INFO L226 Difference]: Without dead ends: 97 [2025-01-09 12:46:14,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2025-01-09 12:46:14,077 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 58 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 12:46:14,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 330 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 12:46:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-01-09 12:46:14,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 61. [2025-01-09 12:46:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-09 12:46:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 84 transitions. [2025-01-09 12:46:14,081 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 84 transitions. Word has length 90 [2025-01-09 12:46:14,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 12:46:14,082 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 84 transitions. [2025-01-09 12:46:14,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-01-09 12:46:14,082 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 84 transitions. [2025-01-09 12:46:14,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-01-09 12:46:14,083 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 12:46:14,083 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:46:14,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 12:46:14,083 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 12:46:14,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 12:46:14,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1907239829, now seen corresponding path program 1 times [2025-01-09 12:46:14,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 12:46:14,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186477269] [2025-01-09 12:46:14,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 12:46:14,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 12:46:14,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-01-09 12:46:14,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-01-09 12:46:14,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 12:46:14,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat