./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-84.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-84.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ef53c0bbc15a34f2b98e209c72e5a20e457b197773f70e6e1b41920252205f6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 10:12:07,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 10:12:07,629 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 10:12:07,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 10:12:07,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 10:12:07,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 10:12:07,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 10:12:07,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 10:12:07,664 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 10:12:07,665 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 10:12:07,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 10:12:07,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 10:12:07,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 10:12:07,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 10:12:07,668 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 10:12:07,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 10:12:07,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 10:12:07,669 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 10:12:07,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 10:12:07,669 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 10:12:07,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 10:12:07,672 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 10:12:07,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 10:12:07,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 10:12:07,673 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 10:12:07,673 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 10:12:07,673 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 10:12:07,673 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 10:12:07,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 10:12:07,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 10:12:07,674 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 10:12:07,674 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 10:12:07,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:12:07,675 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 10:12:07,675 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 10:12:07,675 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 10:12:07,675 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 10:12:07,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 10:12:07,676 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 10:12:07,676 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 10:12:07,676 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 10:12:07,677 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 10:12:07,677 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ef53c0bbc15a34f2b98e209c72e5a20e457b197773f70e6e1b41920252205f6 [2024-11-22 10:12:07,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 10:12:07,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 10:12:07,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 10:12:07,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 10:12:07,894 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 10:12:07,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-84.i [2024-11-22 10:12:09,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 10:12:09,274 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 10:12:09,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-84.i [2024-11-22 10:12:09,281 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/278a8e2a1/8aabf0311b8241fb8868a950e3cfb7da/FLAG3a4d27912 [2024-11-22 10:12:09,695 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/278a8e2a1/8aabf0311b8241fb8868a950e3cfb7da [2024-11-22 10:12:09,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 10:12:09,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 10:12:09,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 10:12:09,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 10:12:09,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 10:12:09,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:09,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1b2251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09, skipping insertion in model container [2024-11-22 10:12:09,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:09,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 10:12:09,856 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-84.i[916,929] [2024-11-22 10:12:09,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:12:09,917 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 10:12:09,928 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-84.i[916,929] [2024-11-22 10:12:09,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:12:09,974 INFO L204 MainTranslator]: Completed translation [2024-11-22 10:12:09,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09 WrapperNode [2024-11-22 10:12:09,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 10:12:09,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 10:12:09,977 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 10:12:09,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 10:12:09,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,056 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2024-11-22 10:12:10,056 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 10:12:10,057 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 10:12:10,057 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 10:12:10,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 10:12:10,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,069 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,083 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]. [2024-11-22 10:12:10,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,095 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 10:12:10,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 10:12:10,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 10:12:10,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 10:12:10,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (1/1) ... [2024-11-22 10:12:10,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:12:10,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:12:10,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 10:12:10,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 10:12:10,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 10:12:10,176 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 10:12:10,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 10:12:10,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 10:12:10,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 10:12:10,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 10:12:10,234 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 10:12:10,235 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 10:12:10,485 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-22 10:12:10,485 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 10:12:10,505 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 10:12:10,505 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 10:12:10,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:12:10 BoogieIcfgContainer [2024-11-22 10:12:10,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 10:12:10,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 10:12:10,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 10:12:10,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 10:12:10,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:12:09" (1/3) ... [2024-11-22 10:12:10,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e511cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:12:10, skipping insertion in model container [2024-11-22 10:12:10,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:12:09" (2/3) ... [2024-11-22 10:12:10,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e511cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:12:10, skipping insertion in model container [2024-11-22 10:12:10,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:12:10" (3/3) ... [2024-11-22 10:12:10,512 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-84.i [2024-11-22 10:12:10,526 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 10:12:10,526 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 10:12:10,585 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 10:12:10,593 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;@49518cf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 10:12:10,593 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 10:12:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 32 states have (on average 1.3125) internal successors, (42), 33 states have internal predecessors, (42), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 10:12:10,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-22 10:12:10,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:12:10,612 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:12:10,612 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:12:10,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:12:10,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1608907350, now seen corresponding path program 1 times [2024-11-22 10:12:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:12:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94886337] [2024-11-22 10:12:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:12:10,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:12:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:12:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-22 10:12:10,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:12:10,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94886337] [2024-11-22 10:12:10,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94886337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:12:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891321720] [2024-11-22 10:12:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:12:10,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:12:10,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:12:10,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 10:12:10,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 10:12:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:12:10,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 10:12:10,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:12:11,007 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-22 10:12:11,007 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:12:11,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891321720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:12:11,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:12:11,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 10:12:11,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707157620] [2024-11-22 10:12:11,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:12:11,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 10:12:11,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:12:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 10:12:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:12:11,032 INFO L87 Difference]: Start difference. First operand has 56 states, 32 states have (on average 1.3125) internal successors, (42), 33 states have internal predecessors, (42), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 10:12:11,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:12:11,058 INFO L93 Difference]: Finished difference Result 105 states and 183 transitions. [2024-11-22 10:12:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 10:12:11,061 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 129 [2024-11-22 10:12:11,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:12:11,068 INFO L225 Difference]: With dead ends: 105 [2024-11-22 10:12:11,068 INFO L226 Difference]: Without dead ends: 52 [2024-11-22 10:12:11,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:12:11,074 INFO L432 NwaCegarLoop]: 77 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, 77 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 [2024-11-22 10:12:11,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:12:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-22 10:12:11,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-22 10:12:11,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 10:12:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2024-11-22 10:12:11,125 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 129 [2024-11-22 10:12:11,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:12:11,126 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2024-11-22 10:12:11,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 10:12:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2024-11-22 10:12:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-22 10:12:11,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:12:11,129 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:12:11,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 10:12:11,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 10:12:11,334 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:12:11,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:12:11,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1493085736, now seen corresponding path program 1 times [2024-11-22 10:12:11,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:12:11,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251500462] [2024-11-22 10:12:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:12:11,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:12:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:12:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 10:12:19,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:12:19,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251500462] [2024-11-22 10:12:19,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251500462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:12:19,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:12:19,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 10:12:19,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594577380] [2024-11-22 10:12:19,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:12:19,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 10:12:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:12:19,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 10:12:19,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:12:19,284 INFO L87 Difference]: Start difference. First operand 52 states and 77 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 10:12:20,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:12:20,944 INFO L93 Difference]: Finished difference Result 173 states and 232 transitions. [2024-11-22 10:12:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 10:12:20,945 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 129 [2024-11-22 10:12:20,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:12:20,949 INFO L225 Difference]: With dead ends: 173 [2024-11-22 10:12:20,949 INFO L226 Difference]: Without dead ends: 171 [2024-11-22 10:12:20,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-22 10:12:20,952 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 225 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 10:12:20,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 397 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 10:12:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-22 10:12:20,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 106. [2024-11-22 10:12:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 61 states have internal predecessors, (76), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 10:12:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 160 transitions. [2024-11-22 10:12:20,980 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 160 transitions. Word has length 129 [2024-11-22 10:12:20,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:12:20,981 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 160 transitions. [2024-11-22 10:12:20,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 10:12:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 160 transitions. [2024-11-22 10:12:20,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-22 10:12:20,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:12:20,983 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:12:20,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 10:12:20,983 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:12:20,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:12:20,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1026874198, now seen corresponding path program 1 times [2024-11-22 10:12:20,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:12:20,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838914843] [2024-11-22 10:12:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:12:20,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:12:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat