./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-42.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-42.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 bcbcb400fb3c2001bae06c1a3f5fabc11943b7dd9f57ad2b480b7bdc063ccccb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 07:01:14,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 07:01:14,516 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 07:01:14,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 07:01:14,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 07:01:14,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 07:01:14,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 07:01:14,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 07:01:14,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 07:01:14,561 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 07:01:14,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 07:01:14,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 07:01:14,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 07:01:14,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 07:01:14,563 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 07:01:14,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 07:01:14,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 07:01:14,566 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 07:01:14,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 07:01:14,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 07:01:14,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 07:01:14,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 07:01:14,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 07:01:14,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 07:01:14,568 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 07:01:14,569 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 07:01:14,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 07:01:14,569 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 07:01:14,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 07:01:14,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 07:01:14,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 07:01:14,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 07:01:14,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:01:14,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 07:01:14,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 07:01:14,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 07:01:14,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 07:01:14,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 07:01:14,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 07:01:14,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 07:01:14,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 07:01:14,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 07:01:14,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbcb400fb3c2001bae06c1a3f5fabc11943b7dd9f57ad2b480b7bdc063ccccb [2024-11-22 07:01:14,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 07:01:14,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 07:01:14,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 07:01:14,854 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 07:01:14,855 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 07:01:14,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-42.i [2024-11-22 07:01:16,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 07:01:16,534 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 07:01:16,535 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-42.i [2024-11-22 07:01:16,545 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6cfcaab/b809db05dec64d988c9d1e16dc1bef11/FLAG006047d1b [2024-11-22 07:01:16,560 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6cfcaab/b809db05dec64d988c9d1e16dc1bef11 [2024-11-22 07:01:16,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 07:01:16,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 07:01:16,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 07:01:16,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 07:01:16,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 07:01:16,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:01:16" (1/1) ... [2024-11-22 07:01:16,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600fbd4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:16, skipping insertion in model container [2024-11-22 07:01:16,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:01:16" (1/1) ... [2024-11-22 07:01:16,607 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 07:01:16,839 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_fillercode_fillercodesize_ps-cn-100_file-42.i[916,929] [2024-11-22 07:01:16,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:01:17,001 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 07:01:17,012 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_fillercode_fillercodesize_ps-cn-100_file-42.i[916,929] [2024-11-22 07:01:17,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:01:17,097 INFO L204 MainTranslator]: Completed translation [2024-11-22 07:01:17,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17 WrapperNode [2024-11-22 07:01:17,098 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 07:01:17,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 07:01:17,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 07:01:17,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 07:01:17,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,125 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,173 INFO L138 Inliner]: procedures = 26, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 341 [2024-11-22 07:01:17,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 07:01:17,174 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 07:01:17,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 07:01:17,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 07:01:17,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,190 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,225 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 07:01:17,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 07:01:17,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 07:01:17,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 07:01:17,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 07:01:17,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (1/1) ... [2024-11-22 07:01:17,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:01:17,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:01:17,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 07:01:17,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 07:01:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 07:01:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 07:01:17,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 07:01:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 07:01:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 07:01:17,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 07:01:17,510 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 07:01:17,513 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 07:01:18,133 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-22 07:01:18,134 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 07:01:18,152 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 07:01:18,153 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 07:01:18,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:01:18 BoogieIcfgContainer [2024-11-22 07:01:18,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 07:01:18,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 07:01:18,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 07:01:18,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 07:01:18,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:01:16" (1/3) ... [2024-11-22 07:01:18,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733ce20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:01:18, skipping insertion in model container [2024-11-22 07:01:18,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:01:17" (2/3) ... [2024-11-22 07:01:18,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733ce20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:01:18, skipping insertion in model container [2024-11-22 07:01:18,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:01:18" (3/3) ... [2024-11-22 07:01:18,163 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-42.i [2024-11-22 07:01:18,185 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 07:01:18,186 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 07:01:18,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 07:01:18,265 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;@4d3bd927, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 07:01:18,266 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 07:01:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 89 states have (on average 1.4382022471910112) internal successors, (128), 90 states have internal predecessors, (128), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-22 07:01:18,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-22 07:01:18,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:01:18,313 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:01:18,314 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:01:18,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:01:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1657357438, now seen corresponding path program 1 times [2024-11-22 07:01:18,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:01:18,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848611662] [2024-11-22 07:01:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:01:18,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:01:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:01:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2024-11-22 07:01:19,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:01:19,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848611662] [2024-11-22 07:01:19,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848611662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:01:19,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:01:19,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:01:19,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66052298] [2024-11-22 07:01:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:01:19,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:01:19,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:01:19,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:01:19,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:01:19,594 INFO L87 Difference]: Start difference. First operand has 149 states, 89 states have (on average 1.4382022471910112) internal successors, (128), 90 states have internal predecessors, (128), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-22 07:01:19,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:01:19,999 INFO L93 Difference]: Finished difference Result 434 states and 831 transitions. [2024-11-22 07:01:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:01:20,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 353 [2024-11-22 07:01:20,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:01:20,024 INFO L225 Difference]: With dead ends: 434 [2024-11-22 07:01:20,024 INFO L226 Difference]: Without dead ends: 288 [2024-11-22 07:01:20,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:01:20,038 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 177 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 07:01:20,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 687 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 07:01:20,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-22 07:01:20,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 267. [2024-11-22 07:01:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 150 states have (on average 1.3866666666666667) internal successors, (208), 150 states have internal predecessors, (208), 114 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2024-11-22 07:01:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 436 transitions. [2024-11-22 07:01:20,170 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 436 transitions. Word has length 353 [2024-11-22 07:01:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:01:20,172 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 436 transitions. [2024-11-22 07:01:20,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-22 07:01:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 436 transitions. [2024-11-22 07:01:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-22 07:01:20,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:01:20,180 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:01:20,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 07:01:20,180 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:01:20,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:01:20,181 INFO L85 PathProgramCache]: Analyzing trace with hash -64710391, now seen corresponding path program 1 times [2024-11-22 07:01:20,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:01:20,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163688291] [2024-11-22 07:01:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:01:20,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:01:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:01:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2024-11-22 07:01:21,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:01:21,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163688291] [2024-11-22 07:01:21,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163688291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:01:21,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:01:21,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 07:01:21,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847684353] [2024-11-22 07:01:21,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:01:21,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:01:21,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:01:21,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:01:21,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:01:21,007 INFO L87 Difference]: Start difference. First operand 267 states and 436 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-22 07:01:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:01:21,621 INFO L93 Difference]: Finished difference Result 595 states and 967 transitions. [2024-11-22 07:01:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 07:01:21,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 354 [2024-11-22 07:01:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:01:21,631 INFO L225 Difference]: With dead ends: 595 [2024-11-22 07:01:21,633 INFO L226 Difference]: Without dead ends: 453 [2024-11-22 07:01:21,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 07:01:21,638 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 207 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 07:01:21,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 859 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 07:01:21,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-22 07:01:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 407. [2024-11-22 07:01:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 232 states have (on average 1.396551724137931) internal successors, (324), 232 states have internal predecessors, (324), 171 states have call successors, (171), 3 states have call predecessors, (171), 3 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2024-11-22 07:01:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 666 transitions. [2024-11-22 07:01:21,746 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 666 transitions. Word has length 354 [2024-11-22 07:01:21,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:01:21,747 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 666 transitions. [2024-11-22 07:01:21,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-22 07:01:21,748 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 666 transitions. [2024-11-22 07:01:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-22 07:01:21,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:01:21,754 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:01:21,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 07:01:21,755 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:01:21,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:01:21,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1344574069, now seen corresponding path program 1 times [2024-11-22 07:01:21,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:01:21,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115493384] [2024-11-22 07:01:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:01:21,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:01:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:01:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2024-11-22 07:01:22,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:01:22,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115493384] [2024-11-22 07:01:22,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115493384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:01:22,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:01:22,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:01:22,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128153825] [2024-11-22 07:01:22,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:01:22,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:01:22,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:01:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:01:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:01:22,135 INFO L87 Difference]: Start difference. First operand 407 states and 666 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-22 07:01:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:01:22,203 INFO L93 Difference]: Finished difference Result 689 states and 1128 transitions. [2024-11-22 07:01:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:01:22,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 354 [2024-11-22 07:01:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:01:22,209 INFO L225 Difference]: With dead ends: 689 [2024-11-22 07:01:22,209 INFO L226 Difference]: Without dead ends: 407 [2024-11-22 07:01:22,211 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 [2024-11-22 07:01:22,212 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 0 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:01:22,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:01:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-11-22 07:01:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2024-11-22 07:01:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 232 states have (on average 1.3879310344827587) internal successors, (322), 232 states have internal predecessors, (322), 171 states have call successors, (171), 3 states have call predecessors, (171), 3 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2024-11-22 07:01:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 664 transitions. [2024-11-22 07:01:22,270 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 664 transitions. Word has length 354 [2024-11-22 07:01:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:01:22,272 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 664 transitions. [2024-11-22 07:01:22,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2024-11-22 07:01:22,275 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 664 transitions. [2024-11-22 07:01:22,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-22 07:01:22,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:01:22,280 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:01:22,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 07:01:22,281 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:01:22,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:01:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash -664515699, now seen corresponding path program 1 times [2024-11-22 07:01:22,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:01:22,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905227486] [2024-11-22 07:01:22,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:01:22,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:01:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:01:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 117 proven. 51 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2024-11-22 07:01:22,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:01:22,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905227486] [2024-11-22 07:01:22,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905227486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:01:22,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951019482] [2024-11-22 07:01:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:01:22,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:01:22,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:01:22,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:01:22,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 07:01:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:01:23,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 07:01:23,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:01:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2786 proven. 51 refuted. 0 times theorem prover too weak. 3547 trivial. 0 not checked. [2024-11-22 07:01:23,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:01:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 117 proven. 51 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2024-11-22 07:01:23,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951019482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:01:23,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:01:23,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-22 07:01:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493718233] [2024-11-22 07:01:23,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:01:23,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 07:01:23,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:01:23,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 07:01:23,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-22 07:01:23,864 INFO L87 Difference]: Start difference. First operand 407 states and 664 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (93), 4 states have call predecessors, (93), 4 states have call successors, (93) [2024-11-22 07:01:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:01:24,309 INFO L93 Difference]: Finished difference Result 728 states and 1176 transitions. [2024-11-22 07:01:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 07:01:24,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (93), 4 states have call predecessors, (93), 4 states have call successors, (93) Word has length 354 [2024-11-22 07:01:24,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:01:24,315 INFO L225 Difference]: With dead ends: 728 [2024-11-22 07:01:24,315 INFO L226 Difference]: Without dead ends: 425 [2024-11-22 07:01:24,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 706 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2024-11-22 07:01:24,318 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 337 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 07:01:24,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 398 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 07:01:24,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-22 07:01:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 419. [2024-11-22 07:01:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 241 states have (on average 1.3609958506224067) internal successors, (328), 241 states have internal predecessors, (328), 171 states have call successors, (171), 6 states have call predecessors, (171), 6 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2024-11-22 07:01:24,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 670 transitions. [2024-11-22 07:01:24,415 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 670 transitions. Word has length 354 [2024-11-22 07:01:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:01:24,416 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 670 transitions. [2024-11-22 07:01:24,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (93), 4 states have call predecessors, (93), 4 states have call successors, (93) [2024-11-22 07:01:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 670 transitions. [2024-11-22 07:01:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-22 07:01:24,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:01:24,422 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:01:24,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 07:01:24,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:01:24,623 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:01:24,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:01:24,625 INFO L85 PathProgramCache]: Analyzing trace with hash -155042609, now seen corresponding path program 1 times [2024-11-22 07:01:24,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:01:24,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350068562] [2024-11-22 07:01:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:01:24,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:01:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:01:25,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 51 proven. 279 refuted. 0 times theorem prover too weak. 6054 trivial. 0 not checked. [2024-11-22 07:01:25,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:01:25,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350068562] [2024-11-22 07:01:25,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350068562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:01:25,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112206244] [2024-11-22 07:01:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:01:25,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:01:25,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:01:25,755 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) [2024-11-22 07:01:25,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 07:01:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:01:25,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 07:01:25,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:01:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2039 proven. 279 refuted. 0 times theorem prover too weak. 4066 trivial. 0 not checked. [2024-11-22 07:01:27,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:01:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 51 proven. 282 refuted. 0 times theorem prover too weak. 6051 trivial. 0 not checked. [2024-11-22 07:01:28,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112206244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:01:28,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:01:28,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 11] total 20 [2024-11-22 07:01:28,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889669450] [2024-11-22 07:01:28,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:01:28,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 07:01:28,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:01:28,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 07:01:28,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2024-11-22 07:01:28,696 INFO L87 Difference]: Start difference. First operand 419 states and 670 transitions. Second operand has 20 states, 20 states have (on average 6.8) internal successors, (136), 20 states have internal predecessors, (136), 3 states have call successors, (106), 3 states have call predecessors, (106), 7 states have return successors, (108), 3 states have call predecessors, (108), 3 states have call successors, (108) [2024-11-22 07:01:32,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:01:32,095 INFO L93 Difference]: Finished difference Result 2027 states and 3160 transitions. [2024-11-22 07:01:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-22 07:01:32,096 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.8) internal successors, (136), 20 states have internal predecessors, (136), 3 states have call successors, (106), 3 states have call predecessors, (106), 7 states have return successors, (108), 3 states have call predecessors, (108), 3 states have call successors, (108) Word has length 354 [2024-11-22 07:01:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:01:32,106 INFO L225 Difference]: With dead ends: 2027 [2024-11-22 07:01:32,106 INFO L226 Difference]: Without dead ends: 1725 [2024-11-22 07:01:32,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 705 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2685 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1452, Invalid=6380, Unknown=0, NotChecked=0, Total=7832 [2024-11-22 07:01:32,112 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 2008 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-22 07:01:32,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 2237 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-22 07:01:32,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2024-11-22 07:01:32,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 861. [2024-11-22 07:01:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 595 states have (on average 1.4436974789915966) internal successors, (859), 598 states have internal predecessors, (859), 246 states have call successors, (246), 19 states have call predecessors, (246), 19 states have return successors, (246), 243 states have call predecessors, (246), 246 states have call successors, (246) [2024-11-22 07:01:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1351 transitions. [2024-11-22 07:01:32,237 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1351 transitions. Word has length 354 [2024-11-22 07:01:32,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:01:32,239 INFO L471 AbstractCegarLoop]: Abstraction has 861 states and 1351 transitions. [2024-11-22 07:01:32,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.8) internal successors, (136), 20 states have internal predecessors, (136), 3 states have call successors, (106), 3 states have call predecessors, (106), 7 states have return successors, (108), 3 states have call predecessors, (108), 3 states have call successors, (108) [2024-11-22 07:01:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1351 transitions. [2024-11-22 07:01:32,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-22 07:01:32,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:01:32,245 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:01:32,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 07:01:32,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:01:32,446 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:01:32,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:01:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1166159859, now seen corresponding path program 1 times [2024-11-22 07:01:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:01:32,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3580275] [2024-11-22 07:01:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:01:32,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:01:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:01:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 318 proven. 168 refuted. 0 times theorem prover too weak. 5898 trivial. 0 not checked. [2024-11-22 07:01:33,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:01:33,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3580275] [2024-11-22 07:01:33,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3580275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:01:33,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863165600] [2024-11-22 07:01:33,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:01:33,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:01:33,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:01:33,937 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) [2024-11-22 07:01:33,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 07:01:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:01:34,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 07:01:34,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:01:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3377 proven. 297 refuted. 0 times theorem prover too weak. 2710 trivial. 0 not checked. [2024-11-22 07:01:35,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:01:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 318 proven. 177 refuted. 0 times theorem prover too weak. 5889 trivial. 0 not checked. [2024-11-22 07:01:36,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863165600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:01:36,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:01:36,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 26 [2024-11-22 07:01:36,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807891298] [2024-11-22 07:01:36,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:01:36,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 07:01:36,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:01:36,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 07:01:36,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2024-11-22 07:01:36,300 INFO L87 Difference]: Start difference. First operand 861 states and 1351 transitions. Second operand has 26 states, 24 states have (on average 6.166666666666667) internal successors, (148), 23 states have internal predecessors, (148), 9 states have call successors, (101), 4 states have call predecessors, (101), 9 states have return successors, (104), 9 states have call predecessors, (104), 9 states have call successors, (104) [2024-11-22 07:01:49,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 07:01:54,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 07:01:55,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 07:01:57,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 07:01:59,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 07:02:00,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 07:02:04,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 07:02:09,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 07:02:15,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 07:02:20,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 07:02:30,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []