./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-66.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-66.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 2fb5494f31021cb0f379142b5b5cf1efd42a1c877a9dec66b9c682ab4f055ad0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 09:50:54,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 09:50:54,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 09:50:54,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 09:50:54,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 09:50:54,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 09:50:54,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 09:50:54,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 09:50:54,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 09:50:54,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 09:50:54,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 09:50:54,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 09:50:54,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 09:50:54,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 09:50:54,655 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 09:50:54,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 09:50:54,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 09:50:54,656 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 09:50:54,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 09:50:54,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 09:50:54,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 09:50:54,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 09:50:54,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 09:50:54,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 09:50:54,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 09:50:54,660 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 09:50:54,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 09:50:54,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 09:50:54,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 09:50:54,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 09:50:54,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 09:50:54,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 09:50:54,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 09:50:54,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 09:50:54,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 09:50:54,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 09:50:54,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 09:50:54,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 09:50:54,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 09:50:54,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 09:50:54,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 09:50:54,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 09:50:54,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fb5494f31021cb0f379142b5b5cf1efd42a1c877a9dec66b9c682ab4f055ad0 [2024-10-24 09:50:54,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 09:50:54,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 09:50:54,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 09:50:54,930 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 09:50:54,930 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 09:50:54,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-66.i [2024-10-24 09:50:56,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 09:50:56,545 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 09:50:56,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-66.i [2024-10-24 09:50:56,554 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af3c8cb4/fc12d168b5e1475eb47fc542cc92770b/FLAG8244bd0e3 [2024-10-24 09:50:56,925 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af3c8cb4/fc12d168b5e1475eb47fc542cc92770b [2024-10-24 09:50:56,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 09:50:56,928 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 09:50:56,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 09:50:56,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 09:50:56,933 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 09:50:56,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:50:56" (1/1) ... [2024-10-24 09:50:56,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403307e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56, skipping insertion in model container [2024-10-24 09:50:56,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:50:56" (1/1) ... [2024-10-24 09:50:56,965 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 09:50:57,116 WARN L248 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_loopvsstraightlinecode_50-1loop_file-66.i[915,928] [2024-10-24 09:50:57,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 09:50:57,190 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 09:50:57,203 WARN L248 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_loopvsstraightlinecode_50-1loop_file-66.i[915,928] [2024-10-24 09:50:57,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 09:50:57,249 INFO L204 MainTranslator]: Completed translation [2024-10-24 09:50:57,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57 WrapperNode [2024-10-24 09:50:57,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 09:50:57,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 09:50:57,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 09:50:57,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 09:50:57,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,304 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2024-10-24 09:50:57,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 09:50:57,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 09:50:57,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 09:50:57,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 09:50:57,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,352 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]. [2024-10-24 09:50:57,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 09:50:57,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 09:50:57,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 09:50:57,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 09:50:57,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (1/1) ... [2024-10-24 09:50:57,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 09:50:57,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 09:50:57,449 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) [2024-10-24 09:50:57,457 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 [2024-10-24 09:50:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 09:50:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 09:50:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 09:50:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 09:50:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 09:50:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 09:50:57,599 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 09:50:57,602 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 09:50:58,007 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-10-24 09:50:58,007 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 09:50:58,066 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 09:50:58,066 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 09:50:58,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:50:58 BoogieIcfgContainer [2024-10-24 09:50:58,068 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 09:50:58,071 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 09:50:58,072 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 09:50:58,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 09:50:58,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:50:56" (1/3) ... [2024-10-24 09:50:58,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7510da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:50:58, skipping insertion in model container [2024-10-24 09:50:58,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57" (2/3) ... [2024-10-24 09:50:58,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7510da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:50:58, skipping insertion in model container [2024-10-24 09:50:58,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:50:58" (3/3) ... [2024-10-24 09:50:58,081 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-66.i [2024-10-24 09:50:58,101 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 09:50:58,101 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 09:50:58,182 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 09:50:58,191 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;@a70e202, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 09:50:58,192 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 09:50:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-24 09:50:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-24 09:50:58,212 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:50:58,213 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 09:50:58,213 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:50:58,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:50:58,221 INFO L85 PathProgramCache]: Analyzing trace with hash 334638980, now seen corresponding path program 1 times [2024-10-24 09:50:58,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:50:58,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262642560] [2024-10-24 09:50:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:50:58,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:50:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:51:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:51:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 09:51:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 09:51:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 09:51:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 09:51:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 09:51:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 09:51:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 09:51:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 09:51:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-24 09:51:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 09:51:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 09:51:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 09:51:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 09:51:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 09:51:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:22,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 09:51:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:23,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-24 09:51:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 09:51:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:51:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262642560] [2024-10-24 09:51:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262642560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 09:51:23,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 09:51:23,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-24 09:51:23,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132320748] [2024-10-24 09:51:23,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 09:51:23,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 09:51:23,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:51:23,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 09:51:23,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-10-24 09:51:23,054 INFO L87 Difference]: Start difference. First operand has 55 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 09:51:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:51:24,313 INFO L93 Difference]: Finished difference Result 220 states and 365 transitions. [2024-10-24 09:51:24,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 09:51:24,315 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 115 [2024-10-24 09:51:24,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:51:24,323 INFO L225 Difference]: With dead ends: 220 [2024-10-24 09:51:24,323 INFO L226 Difference]: Without dead ends: 152 [2024-10-24 09:51:24,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-10-24 09:51:24,330 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 168 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 09:51:24,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 402 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 09:51:24,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-10-24 09:51:24,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 96. [2024-10-24 09:51:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 71 states have (on average 1.4366197183098592) internal successors, (102), 72 states have internal predecessors, (102), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 09:51:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 146 transitions. [2024-10-24 09:51:24,392 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 146 transitions. Word has length 115 [2024-10-24 09:51:24,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:51:24,393 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 146 transitions. [2024-10-24 09:51:24,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 09:51:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 146 transitions. [2024-10-24 09:51:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-24 09:51:24,399 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:51:24,399 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 09:51:24,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 09:51:24,399 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:51:24,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:51:24,400 INFO L85 PathProgramCache]: Analyzing trace with hash 334698562, now seen corresponding path program 1 times [2024-10-24 09:51:24,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:51:24,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275598426] [2024-10-24 09:51:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:51:24,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:51:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:51:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:51:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 09:51:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 09:51:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 09:51:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 09:51:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 09:51:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 09:51:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 09:51:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 09:51:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-24 09:51:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 09:51:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 09:51:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 09:51:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 09:51:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 09:51:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 09:51:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-24 09:51:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:51:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 09:51:51,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:51:51,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275598426] [2024-10-24 09:51:51,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275598426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 09:51:51,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 09:51:51,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-10-24 09:51:51,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964814144] [2024-10-24 09:51:51,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 09:51:51,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 09:51:51,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:51:51,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 09:51:51,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-10-24 09:51:51,239 INFO L87 Difference]: Start difference. First operand 96 states and 146 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 09:51:53,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:51:53,464 INFO L93 Difference]: Finished difference Result 141 states and 201 transitions. [2024-10-24 09:51:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 09:51:53,465 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 115 [2024-10-24 09:51:53,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:51:53,468 INFO L225 Difference]: With dead ends: 141 [2024-10-24 09:51:53,468 INFO L226 Difference]: Without dead ends: 139 [2024-10-24 09:51:53,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2024-10-24 09:51:53,470 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 153 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 09:51:53,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 367 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 09:51:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-24 09:51:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 96. [2024-10-24 09:51:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 71 states have (on average 1.4366197183098592) internal successors, (102), 72 states have internal predecessors, (102), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 09:51:53,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 146 transitions. [2024-10-24 09:51:53,486 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 146 transitions. Word has length 115 [2024-10-24 09:51:53,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:51:53,487 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 146 transitions. [2024-10-24 09:51:53,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 09:51:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 146 transitions. [2024-10-24 09:51:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-24 09:51:53,489 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:51:53,489 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 09:51:53,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 09:51:53,490 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:51:53,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:51:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash -474707646, now seen corresponding path program 1 times [2024-10-24 09:51:53,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:51:53,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884902610] [2024-10-24 09:51:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:51:53,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:51:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:52:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:52:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 09:52:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 09:52:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 09:52:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 09:52:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 09:52:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 09:52:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 09:52:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 09:52:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-24 09:52:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 09:52:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 09:52:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 09:52:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 09:52:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 09:52:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 09:52:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-24 09:52:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:52:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 09:52:11,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:52:11,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884902610] [2024-10-24 09:52:11,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884902610] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 09:52:11,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 09:52:11,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-24 09:52:11,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879146777] [2024-10-24 09:52:11,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 09:52:11,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 09:52:11,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:52:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 09:52:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-10-24 09:52:11,669 INFO L87 Difference]: Start difference. First operand 96 states and 146 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 09:52:12,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:52:12,467 INFO L93 Difference]: Finished difference Result 152 states and 215 transitions. [2024-10-24 09:52:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 09:52:12,467 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 115 [2024-10-24 09:52:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:52:12,470 INFO L225 Difference]: With dead ends: 152 [2024-10-24 09:52:12,470 INFO L226 Difference]: Without dead ends: 150 [2024-10-24 09:52:12,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-10-24 09:52:12,475 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 166 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 09:52:12,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 311 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 09:52:12,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-10-24 09:52:12,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 101. [2024-10-24 09:52:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 77 states have internal predecessors, (109), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 09:52:12,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions. [2024-10-24 09:52:12,491 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 153 transitions. Word has length 115 [2024-10-24 09:52:12,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:52:12,491 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 153 transitions. [2024-10-24 09:52:12,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 09:52:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 153 transitions. [2024-10-24 09:52:12,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-24 09:52:12,494 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:52:12,494 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 09:52:12,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 09:52:12,498 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:52:12,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:52:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash -474648064, now seen corresponding path program 1 times [2024-10-24 09:52:12,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:52:12,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117859519] [2024-10-24 09:52:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:52:12,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:52:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat