./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-45.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_codestructure_normal_file-45.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 b04daa3a7e8844e4d56075df37e5bd4af9f49c0c48ae0d64cf929342abfd9773 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 08:41:59,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 08:41:59,706 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 08:41:59,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 08:41:59,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 08:41:59,734 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 08:41:59,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 08:41:59,735 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 08:41:59,736 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 08:41:59,736 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 08:41:59,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 08:41:59,737 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 08:41:59,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 08:41:59,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 08:41:59,737 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 08:41:59,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 08:41:59,738 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 08:41:59,739 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 08:41:59,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 08:41:59,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 08:41:59,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 08:41:59,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 08:41:59,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 08:41:59,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 08:41:59,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 08:41:59,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 08:41:59,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 08:41:59,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 08:41:59,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 08:41:59,740 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 08:41:59,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 08:41:59,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 08:41:59,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 08:41:59,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 08:41:59,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 08:41:59,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 08:41:59,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 08:41:59,741 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 -> b04daa3a7e8844e4d56075df37e5bd4af9f49c0c48ae0d64cf929342abfd9773 [2025-01-09 08:41:59,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 08:41:59,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 08:41:59,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 08:41:59,991 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 08:41:59,991 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 08:41:59,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-45.i [2025-01-09 08:42:01,128 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/40d28545d/e29f7d70654243c1b9676420fb43092a/FLAGc31c7aac9 [2025-01-09 08:42:01,441 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 08:42:01,442 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-45.i [2025-01-09 08:42:01,454 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/40d28545d/e29f7d70654243c1b9676420fb43092a/FLAGc31c7aac9 [2025-01-09 08:42:01,469 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/40d28545d/e29f7d70654243c1b9676420fb43092a [2025-01-09 08:42:01,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 08:42:01,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 08:42:01,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 08:42:01,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 08:42:01,478 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 08:42:01,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f04cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01, skipping insertion in model container [2025-01-09 08:42:01,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,498 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 08:42:01,659 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_codestructure_normal_file-45.i[913,926] [2025-01-09 08:42:01,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 08:42:01,709 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 08:42:01,717 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_codestructure_normal_file-45.i[913,926] [2025-01-09 08:42:01,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 08:42:01,749 INFO L204 MainTranslator]: Completed translation [2025-01-09 08:42:01,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01 WrapperNode [2025-01-09 08:42:01,750 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 08:42:01,751 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 08:42:01,751 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 08:42:01,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 08:42:01,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,790 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 127 [2025-01-09 08:42:01,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 08:42:01,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 08:42:01,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 08:42:01,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 08:42:01,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,821 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 08:42:01,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,828 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,833 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 08:42:01,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 08:42:01,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 08:42:01,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 08:42:01,843 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (1/1) ... [2025-01-09 08:42:01,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 08:42:01,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:42:01,871 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 08:42:01,874 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 08:42:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 08:42:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 08:42:01,892 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 08:42:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 08:42:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 08:42:01,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 08:42:01,943 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 08:42:01,944 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 08:42:02,160 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-01-09 08:42:02,161 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 08:42:02,170 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 08:42:02,172 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 08:42:02,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:42:02 BoogieIcfgContainer [2025-01-09 08:42:02,172 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 08:42:02,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 08:42:02,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 08:42:02,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 08:42:02,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 08:42:01" (1/3) ... [2025-01-09 08:42:02,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434c13ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:42:02, skipping insertion in model container [2025-01-09 08:42:02,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:42:01" (2/3) ... [2025-01-09 08:42:02,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434c13ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:42:02, skipping insertion in model container [2025-01-09 08:42:02,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:42:02" (3/3) ... [2025-01-09 08:42:02,180 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_normal_file-45.i [2025-01-09 08:42:02,190 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 08:42:02,191 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_codestructure_normal_file-45.i that has 2 procedures, 60 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 08:42:02,242 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 08:42:02,252 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;@1c46b6ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 08:42:02,253 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 08:42:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 38 states have internal predecessors, (51), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-01-09 08:42:02,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-01-09 08:42:02,265 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:42:02,265 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:02,266 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:42:02,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:42:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -290443314, now seen corresponding path program 1 times [2025-01-09 08:42:02,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:42:02,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453697526] [2025-01-09 08:42:02,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:42:02,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:42:02,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-01-09 08:42:02,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 08:42:02,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:42:02,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:42:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-01-09 08:42:02,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:42:02,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453697526] [2025-01-09 08:42:02,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453697526] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:42:02,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 08:42:02,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 08:42:02,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257605747] [2025-01-09 08:42:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:42:02,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 08:42:02,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:42:02,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 08:42:02,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 08:42:02,691 INFO L87 Difference]: Start difference. First operand has 60 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 38 states have internal predecessors, (51), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-01-09 08:42:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:42:02,742 INFO L93 Difference]: Finished difference Result 130 states and 221 transitions. [2025-01-09 08:42:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 08:42:02,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 127 [2025-01-09 08:42:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:42:02,757 INFO L225 Difference]: With dead ends: 130 [2025-01-09 08:42:02,758 INFO L226 Difference]: Without dead ends: 73 [2025-01-09 08:42:02,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 08:42:02,764 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 19 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 08:42:02,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 153 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 08:42:02,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-01-09 08:42:02,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2025-01-09 08:42:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-01-09 08:42:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 96 transitions. [2025-01-09 08:42:02,794 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 96 transitions. Word has length 127 [2025-01-09 08:42:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:42:02,795 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 96 transitions. [2025-01-09 08:42:02,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-01-09 08:42:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 96 transitions. [2025-01-09 08:42:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-01-09 08:42:02,799 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:42:02,799 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:02,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 08:42:02,799 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:42:02,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:42:02,800 INFO L85 PathProgramCache]: Analyzing trace with hash 756932668, now seen corresponding path program 1 times [2025-01-09 08:42:02,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:42:02,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454875094] [2025-01-09 08:42:02,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:42:02,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:42:02,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-01-09 08:42:02,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-01-09 08:42:02,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:42:02,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:43:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-01-09 08:43:17,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:43:17,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454875094] [2025-01-09 08:43:17,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454875094] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:43:17,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 08:43:17,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-09 08:43:17,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430658900] [2025-01-09 08:43:17,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:43:17,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 08:43:17,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:43:17,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 08:43:17,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-01-09 08:43:17,544 INFO L87 Difference]: Start difference. First operand 64 states and 96 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-01-09 08:43:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:43:19,737 INFO L93 Difference]: Finished difference Result 76 states and 109 transitions. [2025-01-09 08:43:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 08:43:19,737 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 128 [2025-01-09 08:43:19,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:43:19,741 INFO L225 Difference]: With dead ends: 76 [2025-01-09 08:43:19,741 INFO L226 Difference]: Without dead ends: 74 [2025-01-09 08:43:19,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2025-01-09 08:43:19,741 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 25 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 08:43:19,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 368 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 08:43:19,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-01-09 08:43:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2025-01-09 08:43:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-01-09 08:43:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2025-01-09 08:43:19,761 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 128 [2025-01-09 08:43:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:43:19,765 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2025-01-09 08:43:19,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-01-09 08:43:19,765 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2025-01-09 08:43:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-01-09 08:43:19,766 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:43:19,766 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:19,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 08:43:19,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:43:19,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:43:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1652840215, now seen corresponding path program 1 times [2025-01-09 08:43:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:43:19,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254971620] [2025-01-09 08:43:19,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:43:19,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:43:19,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-01-09 08:43:19,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-01-09 08:43:19,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:43:19,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat