./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-50.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_loopvsstraightlinecode_100-1loop_file-50.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 827549bec0a21b6c131dbbd0a60cc786df11c023034a28cad7dacc960e99c988 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:23:29,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:23:29,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:23:29,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:23:29,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:23:29,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:23:29,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:23:29,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:23:29,415 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:23:29,416 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:23:29,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:23:29,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:23:29,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:23:29,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:23:29,418 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:23:29,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:23:29,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:23:29,421 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:23:29,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:23:29,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:23:29,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:23:29,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:23:29,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:23:29,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:23:29,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:23:29,427 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:23:29,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:23:29,427 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:23:29,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:23:29,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:23:29,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:23:29,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:23:29,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:23:29,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:23:29,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:23:29,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:23:29,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:23:29,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:23:29,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:23:29,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:23:29,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:23:29,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:23:29,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 827549bec0a21b6c131dbbd0a60cc786df11c023034a28cad7dacc960e99c988 [2024-11-18 22:23:29,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:23:29,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:23:29,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:23:29,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:23:29,738 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:23:29,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-50.i [2024-11-18 22:23:31,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:23:31,466 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:23:31,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-50.i [2024-11-18 22:23:31,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8752cc85f/988f7a629c2447f2828a6533ed884769/FLAGe63b6a76d [2024-11-18 22:23:31,491 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8752cc85f/988f7a629c2447f2828a6533ed884769 [2024-11-18 22:23:31,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:23:31,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:23:31,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:23:31,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:23:31,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:23:31,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:31,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54282f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31, skipping insertion in model container [2024-11-18 22:23:31,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:31,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:23:31,731 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_loopvsstraightlinecode_100-1loop_file-50.i[916,929] [2024-11-18 22:23:31,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:23:31,839 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:23:31,855 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_loopvsstraightlinecode_100-1loop_file-50.i[916,929] [2024-11-18 22:23:31,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:23:31,936 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:23:31,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31 WrapperNode [2024-11-18 22:23:31,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:23:31,939 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:23:31,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:23:31,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:23:31,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:31,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:32,052 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 285 [2024-11-18 22:23:32,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:23:32,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:23:32,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:23:32,054 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:23:32,064 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:32,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:32,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:32,116 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]. [2024-11-18 22:23:32,118 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:32,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:32,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:32,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:32,168 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:32,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:32,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:23:32,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:23:32,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:23:32,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:23:32,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (1/1) ... [2024-11-18 22:23:32,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:23:32,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:23:32,225 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) [2024-11-18 22:23:32,229 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 [2024-11-18 22:23:32,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:23:32,287 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:23:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:23:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:23:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:23:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:23:32,379 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:23:32,381 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:23:33,031 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-18 22:23:33,032 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:23:33,053 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:23:33,053 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:23:33,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:23:33 BoogieIcfgContainer [2024-11-18 22:23:33,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:23:33,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:23:33,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:23:33,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:23:33,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:23:31" (1/3) ... [2024-11-18 22:23:33,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504da477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:23:33, skipping insertion in model container [2024-11-18 22:23:33,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:31" (2/3) ... [2024-11-18 22:23:33,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504da477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:23:33, skipping insertion in model container [2024-11-18 22:23:33,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:23:33" (3/3) ... [2024-11-18 22:23:33,067 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-50.i [2024-11-18 22:23:33,084 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:23:33,084 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:23:33,152 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:23:33,159 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;@1ee7bdef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:23:33,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:23:33,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 86 states have (on average 1.3837209302325582) internal successors, (119), 87 states have internal predecessors, (119), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-18 22:23:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 22:23:33,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:23:33,186 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:23:33,186 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:23:33,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:23:33,192 INFO L85 PathProgramCache]: Analyzing trace with hash -480504621, now seen corresponding path program 1 times [2024-11-18 22:23:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:23:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765961699] [2024-11-18 22:23:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:23:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2024-11-18 22:23:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:23:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765961699] [2024-11-18 22:23:33,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765961699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:23:33,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295596421] [2024-11-18 22:23:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:33,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:23:33,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:23:33,690 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) [2024-11-18 22:23:33,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 22:23:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:33,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:23:33,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:23:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2024-11-18 22:23:34,005 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:23:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295596421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:23:34,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:23:34,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:23:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986659059] [2024-11-18 22:23:34,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:23:34,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:23:34,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:23:34,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:23:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:23:34,056 INFO L87 Difference]: Start difference. First operand has 126 states, 86 states have (on average 1.3837209302325582) internal successors, (119), 87 states have internal predecessors, (119), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2024-11-18 22:23:34,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:23:34,120 INFO L93 Difference]: Finished difference Result 249 states and 420 transitions. [2024-11-18 22:23:34,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:23:34,122 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) Word has length 243 [2024-11-18 22:23:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:23:34,134 INFO L225 Difference]: With dead ends: 249 [2024-11-18 22:23:34,135 INFO L226 Difference]: Without dead ends: 122 [2024-11-18 22:23:34,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:23:34,147 INFO L432 NwaCegarLoop]: 190 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, 190 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 [2024-11-18 22:23:34,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:23:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-18 22:23:34,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-18 22:23:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 83 states have (on average 1.3493975903614457) internal successors, (112), 83 states have internal predecessors, (112), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-18 22:23:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 186 transitions. [2024-11-18 22:23:34,210 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 186 transitions. Word has length 243 [2024-11-18 22:23:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:23:34,211 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 186 transitions. [2024-11-18 22:23:34,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2024-11-18 22:23:34,211 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 186 transitions. [2024-11-18 22:23:34,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 22:23:34,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:23:34,217 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:23:34,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 22:23:34,421 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 [2024-11-18 22:23:34,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:23:34,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:23:34,423 INFO L85 PathProgramCache]: Analyzing trace with hash 429411549, now seen corresponding path program 1 times [2024-11-18 22:23:34,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:23:34,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388747938] [2024-11-18 22:23:34,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:34,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:23:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-11-18 22:23:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:23:35,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388747938] [2024-11-18 22:23:35,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388747938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:23:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:23:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:23:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209803735] [2024-11-18 22:23:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:23:35,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:23:35,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:23:35,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:23:35,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:23:35,128 INFO L87 Difference]: Start difference. First operand 122 states and 186 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-18 22:23:35,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:23:35,237 INFO L93 Difference]: Finished difference Result 360 states and 552 transitions. [2024-11-18 22:23:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:23:35,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 243 [2024-11-18 22:23:35,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:23:35,245 INFO L225 Difference]: With dead ends: 360 [2024-11-18 22:23:35,247 INFO L226 Difference]: Without dead ends: 241 [2024-11-18 22:23:35,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:23:35,250 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 97 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:23:35,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 352 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:23:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-18 22:23:35,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2024-11-18 22:23:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 162 states have (on average 1.345679012345679) internal successors, (218), 162 states have internal predecessors, (218), 74 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-18 22:23:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 366 transitions. [2024-11-18 22:23:35,313 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 366 transitions. Word has length 243 [2024-11-18 22:23:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:23:35,316 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 366 transitions. [2024-11-18 22:23:35,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-18 22:23:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 366 transitions. [2024-11-18 22:23:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 22:23:35,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:23:35,324 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:23:35,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:23:35,324 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:23:35,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:23:35,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1109469919, now seen corresponding path program 1 times [2024-11-18 22:23:35,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:23:35,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204734388] [2024-11-18 22:23:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:35,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:23:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 9 proven. 99 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2024-11-18 22:23:36,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:23:36,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204734388] [2024-11-18 22:23:36,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204734388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:23:36,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518527791] [2024-11-18 22:23:36,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:36,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:23:36,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:23:36,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:23:36,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 22:23:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:36,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 22:23:36,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:23:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 438 proven. 99 refuted. 0 times theorem prover too weak. 2127 trivial. 0 not checked. [2024-11-18 22:23:37,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:23:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 9 proven. 99 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2024-11-18 22:23:37,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518527791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:23:37,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:23:37,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-18 22:23:37,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018285205] [2024-11-18 22:23:37,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:23:37,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 22:23:37,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:23:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 22:23:37,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:23:37,708 INFO L87 Difference]: Start difference. First operand 239 states and 366 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) [2024-11-18 22:23:38,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:23:38,323 INFO L93 Difference]: Finished difference Result 491 states and 745 transitions. [2024-11-18 22:23:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 22:23:38,324 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) Word has length 243 [2024-11-18 22:23:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:23:38,328 INFO L225 Difference]: With dead ends: 491 [2024-11-18 22:23:38,328 INFO L226 Difference]: Without dead ends: 255 [2024-11-18 22:23:38,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-11-18 22:23:38,331 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 229 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 22:23:38,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 758 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 22:23:38,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-18 22:23:38,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 247. [2024-11-18 22:23:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 168 states have (on average 1.3214285714285714) internal successors, (222), 168 states have internal predecessors, (222), 74 states have call successors, (74), 4 states have call predecessors, (74), 4 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-18 22:23:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 370 transitions. [2024-11-18 22:23:38,377 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 370 transitions. Word has length 243 [2024-11-18 22:23:38,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:23:38,379 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 370 transitions. [2024-11-18 22:23:38,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) [2024-11-18 22:23:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 370 transitions. [2024-11-18 22:23:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-18 22:23:38,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:23:38,385 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:23:38,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 22:23:38,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-18 22:23:38,590 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:23:38,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:23:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1939008356, now seen corresponding path program 1 times [2024-11-18 22:23:38,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:23:38,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108015811] [2024-11-18 22:23:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:38,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:23:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 22:23:38,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852479712] [2024-11-18 22:23:38,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:38,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:23:38,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:23:38,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:23:38,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 22:23:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:39,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-18 22:23:39,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:23:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1368 proven. 309 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2024-11-18 22:23:45,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:23:46,055 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~var_1_20~0 256))) (let ((.cse0 (+ |c_ULTIMATE.start_step_~stepLocal_1~0#1| 1)) (.cse1 (mod c_~var_1_19~0 256)) (.cse2 (+ .cse3 1))) (and (or (and (forall ((v_z_18 Int)) (or (< v_z_18 .cse0) (< (div .cse1 v_z_18) .cse2))) (forall ((v_z_19 Int)) (or (< v_z_19 .cse0) (< 0 (+ .cse3 1 (div .cse1 v_z_19)))))) (< .cse3 .cse1)) (or (and (forall ((v_z_25 Int)) (or (< 0 (+ .cse1 1 (div .cse1 v_z_25))) (< v_z_25 .cse0))) (forall ((v_z_23 Int)) (or (< (div .cse1 v_z_23) (+ .cse1 1)) (< v_z_23 .cse0)))) (< .cse1 .cse2))))) is different from false [2024-11-18 22:23:46,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:23:46,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108015811] [2024-11-18 22:23:46,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 22:23:46,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852479712] [2024-11-18 22:23:46,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852479712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:23:46,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:23:46,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-11-18 22:23:46,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512581491] [2024-11-18 22:23:46,506 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 22:23:46,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 22:23:46,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:23:46,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 22:23:46,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=411, Unknown=7, NotChecked=42, Total=552 [2024-11-18 22:23:46,510 INFO L87 Difference]: Start difference. First operand 247 states and 370 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 5 states have call successors, (37), 5 states have call predecessors, (37), 9 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2024-11-18 22:23:56,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:00,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:04,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:08,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:12,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:16,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:20,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:24,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:28,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:33,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:37,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:41,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:45,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:49,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:53,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:24:57,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:25:01,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 22:25:06,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]