./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-0.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_fillercode_fillercodesize_ps-cn-250_file-0.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 465302550670ddfe2aca9dabc319e04462635a8aa1413623f09c27b5df4d6427 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:28:29,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:28:29,854 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:28:29,858 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:28:29,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:28:29,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:28:29,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:28:29,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:28:29,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:28:29,885 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:28:29,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:28:29,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:28:29,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:28:29,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:28:29,886 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:28:29,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:28:29,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:28:29,887 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:28:29,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:28:29,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:28:29,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:28:29,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:28:29,891 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:28:29,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:28:29,892 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:28:29,892 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:28:29,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:28:29,892 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:28:29,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:28:29,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:28:29,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:28:29,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:28:29,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:28:29,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:28:29,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:28:29,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:28:29,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:28:29,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:28:29,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:28:29,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:28:29,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:28:29,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:28:29,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 465302550670ddfe2aca9dabc319e04462635a8aa1413623f09c27b5df4d6427 [2024-11-18 19:28:30,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:28:30,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:28:30,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:28:30,186 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:28:30,187 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:28:30,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-0.i [2024-11-18 19:28:31,639 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:28:31,850 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:28:31,850 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-0.i [2024-11-18 19:28:31,862 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0835eb23/852dd3096f5b4a14bba89f8c8fd796e1/FLAG3907f693d [2024-11-18 19:28:31,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0835eb23/852dd3096f5b4a14bba89f8c8fd796e1 [2024-11-18 19:28:31,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:28:31,879 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:28:31,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:28:31,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:28:31,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:28:31,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:28:31" (1/1) ... [2024-11-18 19:28:31,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786a5ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:31, skipping insertion in model container [2024-11-18 19:28:31,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:28:31" (1/1) ... [2024-11-18 19:28:31,934 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:28:32,190 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-250_file-0.i[915,928] [2024-11-18 19:28:32,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:28:32,347 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:28:32,362 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-250_file-0.i[915,928] [2024-11-18 19:28:32,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:28:32,464 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:28:32,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32 WrapperNode [2024-11-18 19:28:32,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:28:32,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:28:32,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:28:32,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:28:32,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,489 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,556 INFO L138 Inliner]: procedures = 26, calls = 85, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 478 [2024-11-18 19:28:32,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:28:32,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:28:32,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:28:32,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:28:32,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,580 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,614 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 19:28:32,615 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,615 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:28:32,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:28:32,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:28:32,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:28:32,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (1/1) ... [2024-11-18 19:28:32,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:28:32,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:28:32,721 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 19:28:32,725 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 19:28:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:28:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:28:32,777 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:28:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:28:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:28:32,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:28:32,901 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:28:32,903 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:28:33,780 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-18 19:28:33,780 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:28:33,804 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:28:33,804 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:28:33,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:28:33 BoogieIcfgContainer [2024-11-18 19:28:33,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:28:33,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:28:33,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:28:33,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:28:33,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:28:31" (1/3) ... [2024-11-18 19:28:33,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a281171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:28:33, skipping insertion in model container [2024-11-18 19:28:33,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:28:32" (2/3) ... [2024-11-18 19:28:33,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a281171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:28:33, skipping insertion in model container [2024-11-18 19:28:33,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:28:33" (3/3) ... [2024-11-18 19:28:33,812 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-0.i [2024-11-18 19:28:33,829 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:28:33,829 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:28:33,938 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:28:33,945 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;@47894de2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:28:33,946 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:28:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 203 states, 128 states have (on average 1.5234375) internal successors, (195), 129 states have internal predecessors, (195), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-18 19:28:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-18 19:28:33,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:28:33,984 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:33,985 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:28:33,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:28:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2036905828, now seen corresponding path program 1 times [2024-11-18 19:28:33,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:28:34,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614747382] [2024-11-18 19:28:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:34,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:28:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2024-11-18 19:28:34,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:28:34,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614747382] [2024-11-18 19:28:34,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614747382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:28:34,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014015814] [2024-11-18 19:28:34,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:34,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:28:34,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:28:34,613 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 19:28:34,614 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 19:28:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:34,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:28:35,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:28:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2024-11-18 19:28:35,091 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:28:35,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014015814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:28:35,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:28:35,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:28:35,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890945489] [2024-11-18 19:28:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:28:35,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:28:35,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:28:35,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:28:35,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:28:35,136 INFO L87 Difference]: Start difference. First operand has 203 states, 128 states have (on average 1.5234375) internal successors, (195), 129 states have internal predecessors, (195), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) [2024-11-18 19:28:35,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:28:35,205 INFO L93 Difference]: Finished difference Result 399 states and 744 transitions. [2024-11-18 19:28:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:28:35,208 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) Word has length 457 [2024-11-18 19:28:35,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:28:35,220 INFO L225 Difference]: With dead ends: 399 [2024-11-18 19:28:35,220 INFO L226 Difference]: Without dead ends: 199 [2024-11-18 19:28:35,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 458 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 19:28:35,233 INFO L432 NwaCegarLoop]: 332 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, 332 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 19:28:35,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:28:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-18 19:28:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2024-11-18 19:28:35,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 125 states have (on average 1.504) internal successors, (188), 125 states have internal predecessors, (188), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-18 19:28:35,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 332 transitions. [2024-11-18 19:28:35,320 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 332 transitions. Word has length 457 [2024-11-18 19:28:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:28:35,322 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 332 transitions. [2024-11-18 19:28:35,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) [2024-11-18 19:28:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 332 transitions. [2024-11-18 19:28:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-18 19:28:35,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:28:35,339 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:35,360 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 19:28:35,540 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 19:28:35,541 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:28:35,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:28:35,542 INFO L85 PathProgramCache]: Analyzing trace with hash -789100372, now seen corresponding path program 1 times [2024-11-18 19:28:35,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:28:35,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962901215] [2024-11-18 19:28:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:28:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:28:35,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:28:35,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962901215] [2024-11-18 19:28:35,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962901215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:28:35,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:28:35,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:28:35,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935490266] [2024-11-18 19:28:35,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:28:35,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:28:35,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:28:35,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:28:35,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:28:35,993 INFO L87 Difference]: Start difference. First operand 199 states and 332 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:36,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:28:36,100 INFO L93 Difference]: Finished difference Result 556 states and 922 transitions. [2024-11-18 19:28:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:28:36,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 457 [2024-11-18 19:28:36,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:28:36,110 INFO L225 Difference]: With dead ends: 556 [2024-11-18 19:28:36,110 INFO L226 Difference]: Without dead ends: 360 [2024-11-18 19:28:36,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:28:36,115 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 251 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:28:36,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 848 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:28:36,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-18 19:28:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 216. [2024-11-18 19:28:36,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 142 states have (on average 1.5422535211267605) internal successors, (219), 142 states have internal predecessors, (219), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-18 19:28:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 363 transitions. [2024-11-18 19:28:36,174 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 363 transitions. Word has length 457 [2024-11-18 19:28:36,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:28:36,179 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 363 transitions. [2024-11-18 19:28:36,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:36,180 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 363 transitions. [2024-11-18 19:28:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-18 19:28:36,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:28:36,190 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:36,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:28:36,191 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:28:36,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:28:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash -514340758, now seen corresponding path program 1 times [2024-11-18 19:28:36,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:28:36,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869554307] [2024-11-18 19:28:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:36,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:28:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:28:36,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:28:36,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869554307] [2024-11-18 19:28:36,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869554307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:28:36,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:28:36,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:28:36,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408902007] [2024-11-18 19:28:36,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:28:36,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:28:36,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:28:36,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:28:36,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:28:36,497 INFO L87 Difference]: Start difference. First operand 216 states and 363 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:28:36,551 INFO L93 Difference]: Finished difference Result 573 states and 951 transitions. [2024-11-18 19:28:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:28:36,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 457 [2024-11-18 19:28:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:28:36,561 INFO L225 Difference]: With dead ends: 573 [2024-11-18 19:28:36,563 INFO L226 Difference]: Without dead ends: 360 [2024-11-18 19:28:36,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:28:36,566 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 249 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:28:36,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 675 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:28:36,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-18 19:28:36,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 216. [2024-11-18 19:28:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 142 states have (on average 1.528169014084507) internal successors, (217), 142 states have internal predecessors, (217), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-18 19:28:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 361 transitions. [2024-11-18 19:28:36,603 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 361 transitions. Word has length 457 [2024-11-18 19:28:36,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:28:36,604 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 361 transitions. [2024-11-18 19:28:36,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:36,605 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 361 transitions. [2024-11-18 19:28:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-18 19:28:36,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:28:36,613 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:36,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:28:36,613 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:28:36,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:28:36,614 INFO L85 PathProgramCache]: Analyzing trace with hash -91638932, now seen corresponding path program 1 times [2024-11-18 19:28:36,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:28:36,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616876764] [2024-11-18 19:28:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:36,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:28:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:28:37,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:28:37,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616876764] [2024-11-18 19:28:37,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616876764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:28:37,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:28:37,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:28:37,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768658291] [2024-11-18 19:28:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:28:37,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:28:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:28:37,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:28:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:28:37,382 INFO L87 Difference]: Start difference. First operand 216 states and 361 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:28:37,894 INFO L93 Difference]: Finished difference Result 643 states and 1078 transitions. [2024-11-18 19:28:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:28:37,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 457 [2024-11-18 19:28:37,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:28:37,899 INFO L225 Difference]: With dead ends: 643 [2024-11-18 19:28:37,899 INFO L226 Difference]: Without dead ends: 430 [2024-11-18 19:28:37,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:28:37,902 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 262 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 19:28:37,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1145 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 19:28:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-18 19:28:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 413. [2024-11-18 19:28:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 266 states have (on average 1.5338345864661653) internal successors, (408), 266 states have internal predecessors, (408), 144 states have call successors, (144), 2 states have call predecessors, (144), 2 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-18 19:28:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 696 transitions. [2024-11-18 19:28:37,969 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 696 transitions. Word has length 457 [2024-11-18 19:28:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:28:37,970 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 696 transitions. [2024-11-18 19:28:37,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 696 transitions. [2024-11-18 19:28:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-18 19:28:37,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:28:37,977 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:37,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:28:37,977 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:28:37,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:28:37,978 INFO L85 PathProgramCache]: Analyzing trace with hash -678444946, now seen corresponding path program 1 times [2024-11-18 19:28:37,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:28:37,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708918787] [2024-11-18 19:28:37,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:37,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:28:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:28:38,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:28:38,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708918787] [2024-11-18 19:28:38,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708918787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:28:38,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:28:38,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:28:38,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594699234] [2024-11-18 19:28:38,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:28:38,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:28:38,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:28:38,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:28:38,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:28:38,527 INFO L87 Difference]: Start difference. First operand 413 states and 696 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:38,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:28:38,575 INFO L93 Difference]: Finished difference Result 957 states and 1625 transitions. [2024-11-18 19:28:38,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:28:38,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 457 [2024-11-18 19:28:38,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:28:38,584 INFO L225 Difference]: With dead ends: 957 [2024-11-18 19:28:38,584 INFO L226 Difference]: Without dead ends: 692 [2024-11-18 19:28:38,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:28:38,587 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 189 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:28:38,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 720 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:28:38,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-18 19:28:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 690. [2024-11-18 19:28:38,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 470 states have (on average 1.5638297872340425) internal successors, (735), 470 states have internal predecessors, (735), 216 states have call successors, (216), 3 states have call predecessors, (216), 3 states have return successors, (216), 216 states have call predecessors, (216), 216 states have call successors, (216) [2024-11-18 19:28:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1167 transitions. [2024-11-18 19:28:38,653 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1167 transitions. Word has length 457 [2024-11-18 19:28:38,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:28:38,654 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1167 transitions. [2024-11-18 19:28:38,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1167 transitions. [2024-11-18 19:28:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-18 19:28:38,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:28:38,662 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:38,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:28:38,662 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:28:38,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:28:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1571931284, now seen corresponding path program 1 times [2024-11-18 19:28:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:28:38,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885901000] [2024-11-18 19:28:38,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:28:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:28:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:28:39,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885901000] [2024-11-18 19:28:39,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885901000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:28:39,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:28:39,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:28:39,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89476169] [2024-11-18 19:28:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:28:39,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:28:39,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:28:39,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:28:39,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:28:39,476 INFO L87 Difference]: Start difference. First operand 690 states and 1167 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:28:40,555 INFO L93 Difference]: Finished difference Result 1568 states and 2630 transitions. [2024-11-18 19:28:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 19:28:40,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 457 [2024-11-18 19:28:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:28:40,564 INFO L225 Difference]: With dead ends: 1568 [2024-11-18 19:28:40,565 INFO L226 Difference]: Without dead ends: 1145 [2024-11-18 19:28:40,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 19:28:40,568 INFO L432 NwaCegarLoop]: 620 mSDtfsCounter, 604 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 19:28:40,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1460 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 19:28:40,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2024-11-18 19:28:40,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 710. [2024-11-18 19:28:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 490 states have (on average 1.5571428571428572) internal successors, (763), 490 states have internal predecessors, (763), 216 states have call successors, (216), 3 states have call predecessors, (216), 3 states have return successors, (216), 216 states have call predecessors, (216), 216 states have call successors, (216) [2024-11-18 19:28:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1195 transitions. [2024-11-18 19:28:40,667 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1195 transitions. Word has length 457 [2024-11-18 19:28:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:28:40,668 INFO L471 AbstractCegarLoop]: Abstraction has 710 states and 1195 transitions. [2024-11-18 19:28:40,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1195 transitions. [2024-11-18 19:28:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-18 19:28:40,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:28:40,676 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:40,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:28:40,676 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:28:40,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:28:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash 948028650, now seen corresponding path program 1 times [2024-11-18 19:28:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:28:40,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088032941] [2024-11-18 19:28:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:40,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:28:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:28:41,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:28:41,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088032941] [2024-11-18 19:28:41,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088032941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:28:41,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:28:41,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:28:41,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425659278] [2024-11-18 19:28:41,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:28:41,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:28:41,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:28:41,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:28:41,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:28:41,607 INFO L87 Difference]: Start difference. First operand 710 states and 1195 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:28:41,971 INFO L93 Difference]: Finished difference Result 1618 states and 2700 transitions. [2024-11-18 19:28:41,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:28:41,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 457 [2024-11-18 19:28:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:28:41,980 INFO L225 Difference]: With dead ends: 1618 [2024-11-18 19:28:41,980 INFO L226 Difference]: Without dead ends: 1169 [2024-11-18 19:28:41,984 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 [2024-11-18 19:28:41,985 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 298 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:28:41,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 984 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:28:41,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2024-11-18 19:28:42,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1131. [2024-11-18 19:28:42,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 765 states have (on average 1.542483660130719) internal successors, (1180), 765 states have internal predecessors, (1180), 360 states have call successors, (360), 5 states have call predecessors, (360), 5 states have return successors, (360), 360 states have call predecessors, (360), 360 states have call successors, (360) [2024-11-18 19:28:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1900 transitions. [2024-11-18 19:28:42,123 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1900 transitions. Word has length 457 [2024-11-18 19:28:42,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:28:42,124 INFO L471 AbstractCegarLoop]: Abstraction has 1131 states and 1900 transitions. [2024-11-18 19:28:42,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1900 transitions. [2024-11-18 19:28:42,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-18 19:28:42,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:28:42,133 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:42,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:28:42,133 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:28:42,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:28:42,134 INFO L85 PathProgramCache]: Analyzing trace with hash -73039704, now seen corresponding path program 1 times [2024-11-18 19:28:42,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:28:42,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429474152] [2024-11-18 19:28:42,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:42,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:28:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:28:43,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:28:43,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429474152] [2024-11-18 19:28:43,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429474152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:28:43,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:28:43,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:28:43,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542417416] [2024-11-18 19:28:43,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:28:43,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:28:43,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:28:43,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:28:43,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:28:43,192 INFO L87 Difference]: Start difference. First operand 1131 states and 1900 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:28:44,032 INFO L93 Difference]: Finished difference Result 3310 states and 5559 transitions. [2024-11-18 19:28:44,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 19:28:44,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 457 [2024-11-18 19:28:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:28:44,051 INFO L225 Difference]: With dead ends: 3310 [2024-11-18 19:28:44,052 INFO L226 Difference]: Without dead ends: 2853 [2024-11-18 19:28:44,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:28:44,056 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 1147 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:28:44,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1490 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:28:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2024-11-18 19:28:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 2125. [2024-11-18 19:28:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 1550 states have (on average 1.5819354838709678) internal successors, (2452), 1556 states have internal predecessors, (2452), 560 states have call successors, (560), 14 states have call predecessors, (560), 14 states have return successors, (560), 554 states have call predecessors, (560), 560 states have call successors, (560) [2024-11-18 19:28:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 3572 transitions. [2024-11-18 19:28:44,329 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 3572 transitions. Word has length 457 [2024-11-18 19:28:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:28:44,330 INFO L471 AbstractCegarLoop]: Abstraction has 2125 states and 3572 transitions. [2024-11-18 19:28:44,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:28:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 3572 transitions. [2024-11-18 19:28:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-18 19:28:44,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:28:44,333 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:44,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:28:44,334 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:28:44,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:28:44,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2101625814, now seen corresponding path program 1 times [2024-11-18 19:28:44,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:28:44,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090061111] [2024-11-18 19:28:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:44,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:28:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 51 proven. 162 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2024-11-18 19:28:45,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:28:45,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090061111] [2024-11-18 19:28:45,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090061111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:28:45,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14470251] [2024-11-18 19:28:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:45,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:28:45,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:28:45,362 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 19:28:45,364 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 19:28:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:45,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 19:28:45,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:28:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 3786 proven. 330 refuted. 0 times theorem prover too weak. 6108 trivial. 0 not checked. [2024-11-18 19:28:47,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:28:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 90 proven. 333 refuted. 0 times theorem prover too weak. 9801 trivial. 0 not checked. [2024-11-18 19:28:48,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14470251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:28:48,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:28:48,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 20 [2024-11-18 19:28:48,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688321089] [2024-11-18 19:28:48,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:28:48,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 19:28:48,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:28:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 19:28:48,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-18 19:28:48,516 INFO L87 Difference]: Start difference. First operand 2125 states and 3572 transitions. Second operand has 20 states, 20 states have (on average 9.55) internal successors, (191), 20 states have internal predecessors, (191), 4 states have call successors, (186), 3 states have call predecessors, (186), 7 states have return successors, (188), 4 states have call predecessors, (188), 4 states have call successors, (188) [2024-11-18 19:28:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:28:52,559 INFO L93 Difference]: Finished difference Result 4406 states and 7195 transitions. [2024-11-18 19:28:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-18 19:28:52,561 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.55) internal successors, (191), 20 states have internal predecessors, (191), 4 states have call successors, (186), 3 states have call predecessors, (186), 7 states have return successors, (188), 4 states have call predecessors, (188), 4 states have call successors, (188) Word has length 457 [2024-11-18 19:28:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:28:52,578 INFO L225 Difference]: With dead ends: 4406 [2024-11-18 19:28:52,579 INFO L226 Difference]: Without dead ends: 2525 [2024-11-18 19:28:52,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 904 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1373, Invalid=4633, Unknown=0, NotChecked=0, Total=6006 [2024-11-18 19:28:52,587 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 1586 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 3836 SdHoareTripleChecker+Invalid, 4107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:28:52,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 3836 Invalid, 4107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 19:28:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2024-11-18 19:28:52,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2291. [2024-11-18 19:28:52,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1566 states have (on average 1.4923371647509578) internal successors, (2337), 1572 states have internal predecessors, (2337), 680 states have call successors, (680), 44 states have call predecessors, (680), 44 states have return successors, (680), 674 states have call predecessors, (680), 680 states have call successors, (680) [2024-11-18 19:28:52,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3697 transitions. [2024-11-18 19:28:52,859 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3697 transitions. Word has length 457 [2024-11-18 19:28:52,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:28:52,860 INFO L471 AbstractCegarLoop]: Abstraction has 2291 states and 3697 transitions. [2024-11-18 19:28:52,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.55) internal successors, (191), 20 states have internal predecessors, (191), 4 states have call successors, (186), 3 states have call predecessors, (186), 7 states have return successors, (188), 4 states have call predecessors, (188), 4 states have call successors, (188) [2024-11-18 19:28:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3697 transitions. [2024-11-18 19:28:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-18 19:28:52,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:28:52,864 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:52,885 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 19:28:53,068 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,SelfDestructingSolverStorable8 [2024-11-18 19:28:53,069 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:28:53,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:28:53,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1711982988, now seen corresponding path program 1 times [2024-11-18 19:28:53,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:28:53,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627126185] [2024-11-18 19:28:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:53,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:28:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 57 proven. 156 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2024-11-18 19:28:53,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:28:53,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627126185] [2024-11-18 19:28:53,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627126185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:28:53,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050740157] [2024-11-18 19:28:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:53,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:28:53,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:28:53,710 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 19:28:53,711 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 19:28:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:53,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 19:28:53,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:28:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 4061 proven. 156 refuted. 0 times theorem prover too weak. 6007 trivial. 0 not checked. [2024-11-18 19:28:54,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:28:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 57 proven. 156 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2024-11-18 19:28:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050740157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:28:55,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:28:55,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-18 19:28:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822925196] [2024-11-18 19:28:55,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:28:55,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 19:28:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:28:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 19:28:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:28:55,012 INFO L87 Difference]: Start difference. First operand 2291 states and 3697 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2024-11-18 19:28:55,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:28:55,587 INFO L93 Difference]: Finished difference Result 4457 states and 7111 transitions. [2024-11-18 19:28:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 19:28:55,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 459 [2024-11-18 19:28:55,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:28:55,608 INFO L225 Difference]: With dead ends: 4457 [2024-11-18 19:28:55,609 INFO L226 Difference]: Without dead ends: 2399 [2024-11-18 19:28:55,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 915 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-18 19:28:55,617 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 285 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:28:55,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 609 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:28:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2024-11-18 19:28:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2323. [2024-11-18 19:28:55,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 1590 states have (on average 1.4748427672955975) internal successors, (2345), 1596 states have internal predecessors, (2345), 680 states have call successors, (680), 52 states have call predecessors, (680), 52 states have return successors, (680), 674 states have call predecessors, (680), 680 states have call successors, (680) [2024-11-18 19:28:55,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3705 transitions. [2024-11-18 19:28:55,958 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3705 transitions. Word has length 459 [2024-11-18 19:28:55,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:28:55,959 INFO L471 AbstractCegarLoop]: Abstraction has 2323 states and 3705 transitions. [2024-11-18 19:28:55,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2024-11-18 19:28:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3705 transitions. [2024-11-18 19:28:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-18 19:28:55,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:28:55,965 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:55,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 19:28:56,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:28:56,166 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:28:56,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:28:56,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2106349774, now seen corresponding path program 1 times [2024-11-18 19:28:56,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:28:56,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978825828] [2024-11-18 19:28:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:56,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:28:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 174 proven. 39 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2024-11-18 19:28:56,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:28:56,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978825828] [2024-11-18 19:28:56,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978825828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:28:56,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930449830] [2024-11-18 19:28:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:28:56,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:28:56,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:28:56,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:28:56,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 19:28:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:28:57,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 19:28:57,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:28:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 4302 proven. 459 refuted. 0 times theorem prover too weak. 5463 trivial. 0 not checked. [2024-11-18 19:28:59,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:29:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 162 proven. 468 refuted. 0 times theorem prover too weak. 9594 trivial. 0 not checked. [2024-11-18 19:29:01,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930449830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:29:01,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:29:01,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 13] total 27 [2024-11-18 19:29:01,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027694949] [2024-11-18 19:29:01,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:29:01,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 19:29:01,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:01,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 19:29:01,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2024-11-18 19:29:01,162 INFO L87 Difference]: Start difference. First operand 2323 states and 3705 transitions. Second operand has 27 states, 27 states have (on average 9.518518518518519) internal successors, (257), 27 states have internal predecessors, (257), 9 states have call successors, (198), 5 states have call predecessors, (198), 12 states have return successors, (199), 9 states have call predecessors, (199), 9 states have call successors, (199) [2024-11-18 19:29:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:02,606 INFO L93 Difference]: Finished difference Result 4657 states and 7323 transitions. [2024-11-18 19:29:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 19:29:02,607 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.518518518518519) internal successors, (257), 27 states have internal predecessors, (257), 9 states have call successors, (198), 5 states have call predecessors, (198), 12 states have return successors, (199), 9 states have call predecessors, (199), 9 states have call successors, (199) Word has length 459 [2024-11-18 19:29:02,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:02,627 INFO L225 Difference]: With dead ends: 4657 [2024-11-18 19:29:02,628 INFO L226 Difference]: Without dead ends: 2485 [2024-11-18 19:29:02,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 897 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 19:29:02,636 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 1093 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:02,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 1032 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 19:29:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2024-11-18 19:29:02,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 1419. [2024-11-18 19:29:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 984 states have (on average 1.4390243902439024) internal successors, (1416), 988 states have internal predecessors, (1416), 392 states have call successors, (392), 42 states have call predecessors, (392), 42 states have return successors, (392), 388 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-18 19:29:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2200 transitions. [2024-11-18 19:29:02,875 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2200 transitions. Word has length 459 [2024-11-18 19:29:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:02,876 INFO L471 AbstractCegarLoop]: Abstraction has 1419 states and 2200 transitions. [2024-11-18 19:29:02,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.518518518518519) internal successors, (257), 27 states have internal predecessors, (257), 9 states have call successors, (198), 5 states have call predecessors, (198), 12 states have return successors, (199), 9 states have call predecessors, (199), 9 states have call successors, (199) [2024-11-18 19:29:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2200 transitions. [2024-11-18 19:29:02,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-18 19:29:02,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:02,884 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:02,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 19:29:03,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:29:03,091 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:03,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:03,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1684905010, now seen corresponding path program 1 times [2024-11-18 19:29:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:03,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201732469] [2024-11-18 19:29:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:03,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:29:03,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201732469] [2024-11-18 19:29:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201732469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:29:03,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:29:03,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:29:03,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777911265] [2024-11-18 19:29:03,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:29:03,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:29:03,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:03,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:29:03,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:29:03,475 INFO L87 Difference]: Start difference. First operand 1419 states and 2200 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:29:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:03,709 INFO L93 Difference]: Finished difference Result 2663 states and 4137 transitions. [2024-11-18 19:29:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:29:03,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 459 [2024-11-18 19:29:03,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:03,729 INFO L225 Difference]: With dead ends: 2663 [2024-11-18 19:29:03,730 INFO L226 Difference]: Without dead ends: 1419 [2024-11-18 19:29:03,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 19:29:03,737 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 196 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:03,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 314 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:29:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2024-11-18 19:29:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2024-11-18 19:29:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 984 states have (on average 1.4298780487804879) internal successors, (1407), 988 states have internal predecessors, (1407), 392 states have call successors, (392), 42 states have call predecessors, (392), 42 states have return successors, (392), 388 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-18 19:29:03,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2191 transitions. [2024-11-18 19:29:03,941 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2191 transitions. Word has length 459 [2024-11-18 19:29:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:03,942 INFO L471 AbstractCegarLoop]: Abstraction has 1419 states and 2191 transitions. [2024-11-18 19:29:03,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:29:03,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2191 transitions. [2024-11-18 19:29:03,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-18 19:29:03,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:03,946 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:03,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 19:29:03,946 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:03,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:03,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1325684245, now seen corresponding path program 1 times [2024-11-18 19:29:03,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:03,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290915522] [2024-11-18 19:29:03,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:03,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 225 proven. 195 refuted. 0 times theorem prover too weak. 9804 trivial. 0 not checked. [2024-11-18 19:29:07,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:07,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290915522] [2024-11-18 19:29:07,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290915522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:29:07,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489416200] [2024-11-18 19:29:07,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:07,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:29:07,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:29:07,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:29:07,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 19:29:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:07,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-18 19:29:07,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:29:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 6332 proven. 324 refuted. 0 times theorem prover too weak. 3568 trivial. 0 not checked. [2024-11-18 19:29:12,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:29:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 372 proven. 258 refuted. 0 times theorem prover too weak. 9594 trivial. 0 not checked. [2024-11-18 19:29:19,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489416200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:29:19,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:29:19,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 19] total 45 [2024-11-18 19:29:19,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838256692] [2024-11-18 19:29:19,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:29:19,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-18 19:29:19,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-18 19:29:19,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1651, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 19:29:19,143 INFO L87 Difference]: Start difference. First operand 1419 states and 2191 transitions. Second operand has 45 states, 44 states have (on average 5.4772727272727275) internal successors, (241), 45 states have internal predecessors, (241), 11 states have call successors, (142), 5 states have call predecessors, (142), 12 states have return successors, (143), 11 states have call predecessors, (143), 11 states have call successors, (143)