./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c -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 5f3e3e9ccc5a5069122f9a5e86045d7e13172c8034d09d1e159c68b2e816764e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:23:43,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:23:43,136 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:23:43,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:23:43,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:23:43,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:23:43,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:23:43,176 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:23:43,176 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:23:43,177 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:23:43,177 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:23:43,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:23:43,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:23:43,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:23:43,178 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:23:43,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:23:43,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:23:43,179 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:23:43,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:23:43,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:23:43,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:23:43,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:23:43,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:23:43,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:23:43,183 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:23:43,183 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:23:43,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:23:43,183 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:23:43,183 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:23:43,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:23:43,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:23:43,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:23:43,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:23:43,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:23:43,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:23:43,184 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:23:43,184 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:23:43,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:23:43,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:23:43,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:23:43,185 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:23:43,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:23:43,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f3e3e9ccc5a5069122f9a5e86045d7e13172c8034d09d1e159c68b2e816764e [2024-10-12 21:23:43,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:23:43,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:23:43,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:23:43,422 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:23:43,422 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:23:43,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-10-12 21:23:44,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:23:44,902 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:23:44,903 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-10-12 21:23:44,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c197478/15c0e4d56e20496baa7c63bbea6a739b/FLAG5a3f1971a [2024-10-12 21:23:45,120 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c197478/15c0e4d56e20496baa7c63bbea6a739b [2024-10-12 21:23:45,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:23:45,124 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:23:45,125 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:23:45,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:23:45,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:23:45,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:23:45" (1/1) ... [2024-10-12 21:23:45,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b94469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:45, skipping insertion in model container [2024-10-12 21:23:45,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:23:45" (1/1) ... [2024-10-12 21:23:45,210 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:23:45,458 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[6524,6537] [2024-10-12 21:23:45,513 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[13814,13827] [2024-10-12 21:23:45,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:23:45,980 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:23:46,004 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[6524,6537] [2024-10-12 21:23:46,010 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[13814,13827] [2024-10-12 21:23:46,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:23:46,335 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:23:46,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46 WrapperNode [2024-10-12 21:23:46,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:23:46,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:23:46,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:23:46,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:23:46,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:46,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:46,568 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4981 [2024-10-12 21:23:46,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:23:46,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:23:46,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:23:46,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:23:46,577 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:46,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:46,605 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:46,793 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 21:23:46,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:46,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:46,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:46,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:46,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:46,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:47,050 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:23:47,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:23:47,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:23:47,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:23:47,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (1/1) ... [2024-10-12 21:23:47,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:23:47,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:23:47,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 21:23:47,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 21:23:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:23:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:23:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:23:47,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:23:47,264 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:23:47,266 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:23:50,508 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-10-12 21:23:50,509 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:23:50,554 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:23:50,556 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 21:23:50,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:23:50 BoogieIcfgContainer [2024-10-12 21:23:50,557 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:23:50,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:23:50,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:23:50,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:23:50,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:23:45" (1/3) ... [2024-10-12 21:23:50,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ce73b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:23:50, skipping insertion in model container [2024-10-12 21:23:50,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:23:46" (2/3) ... [2024-10-12 21:23:50,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ce73b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:23:50, skipping insertion in model container [2024-10-12 21:23:50,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:23:50" (3/3) ... [2024-10-12 21:23:50,564 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-10-12 21:23:50,576 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:23:50,576 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:23:50,653 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:23:50,658 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;@13434d2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:23:50,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:23:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-12 21:23:50,672 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:50,672 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:50,673 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:50,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:50,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1100216757, now seen corresponding path program 1 times [2024-10-12 21:23:50,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:50,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100438007] [2024-10-12 21:23:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:50,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:50,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:50,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100438007] [2024-10-12 21:23:50,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100438007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:50,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:50,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 21:23:50,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641654257] [2024-10-12 21:23:50,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:50,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 21:23:50,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:50,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 21:23:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:23:50,878 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:50,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:50,952 INFO L93 Difference]: Finished difference Result 1593 states and 3145 transitions. [2024-10-12 21:23:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 21:23:50,958 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-12 21:23:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:50,970 INFO L225 Difference]: With dead ends: 1593 [2024-10-12 21:23:50,970 INFO L226 Difference]: Without dead ends: 803 [2024-10-12 21:23:50,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:23:50,978 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:50,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1520 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-10-12 21:23:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2024-10-12 21:23:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2024-10-12 21:23:51,055 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2024-10-12 21:23:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:51,055 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2024-10-12 21:23:51,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,055 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2024-10-12 21:23:51,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-12 21:23:51,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:51,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:51,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:23:51,056 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:51,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:51,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1687022771, now seen corresponding path program 1 times [2024-10-12 21:23:51,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:51,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324891107] [2024-10-12 21:23:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:51,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:51,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:51,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324891107] [2024-10-12 21:23:51,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324891107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:51,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:51,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:23:51,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013051452] [2024-10-12 21:23:51,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:51,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:23:51,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:51,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:23:51,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:23:51,193 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:51,245 INFO L93 Difference]: Finished difference Result 835 states and 1570 transitions. [2024-10-12 21:23:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:23:51,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-12 21:23:51,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:51,249 INFO L225 Difference]: With dead ends: 835 [2024-10-12 21:23:51,249 INFO L226 Difference]: Without dead ends: 803 [2024-10-12 21:23:51,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:23:51,250 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 0 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4534 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:51,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4534 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-10-12 21:23:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2024-10-12 21:23:51,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2024-10-12 21:23:51,263 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2024-10-12 21:23:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:51,263 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2024-10-12 21:23:51,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2024-10-12 21:23:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-12 21:23:51,265 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:51,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:51,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:23:51,265 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:51,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:51,266 INFO L85 PathProgramCache]: Analyzing trace with hash 613121839, now seen corresponding path program 1 times [2024-10-12 21:23:51,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:51,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377267614] [2024-10-12 21:23:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:51,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:51,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:51,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377267614] [2024-10-12 21:23:51,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377267614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:51,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:51,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:23:51,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525836720] [2024-10-12 21:23:51,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:51,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:23:51,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:51,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:23:51,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:23:51,392 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:51,516 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2024-10-12 21:23:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:23:51,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-10-12 21:23:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:51,521 INFO L225 Difference]: With dead ends: 977 [2024-10-12 21:23:51,522 INFO L226 Difference]: Without dead ends: 948 [2024-10-12 21:23:51,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:23:51,523 INFO L432 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:51,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:23:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2024-10-12 21:23:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2024-10-12 21:23:51,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2024-10-12 21:23:51,536 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2024-10-12 21:23:51,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:51,538 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2024-10-12 21:23:51,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2024-10-12 21:23:51,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 21:23:51,540 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:51,540 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:51,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:23:51,540 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:51,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:51,541 INFO L85 PathProgramCache]: Analyzing trace with hash 675954815, now seen corresponding path program 1 times [2024-10-12 21:23:51,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:51,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630948181] [2024-10-12 21:23:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:51,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:51,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:51,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630948181] [2024-10-12 21:23:51,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630948181] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:51,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:51,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:23:51,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561990306] [2024-10-12 21:23:51,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:51,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:23:51,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:51,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:23:51,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:23:51,612 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:51,649 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2024-10-12 21:23:51,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:23:51,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-12 21:23:51,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:51,654 INFO L225 Difference]: With dead ends: 931 [2024-10-12 21:23:51,658 INFO L226 Difference]: Without dead ends: 875 [2024-10-12 21:23:51,658 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 [2024-10-12 21:23:51,659 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:51,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:51,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-10-12 21:23:51,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2024-10-12 21:23:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2024-10-12 21:23:51,676 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2024-10-12 21:23:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:51,677 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2024-10-12 21:23:51,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2024-10-12 21:23:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 21:23:51,678 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:51,678 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:51,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:23:51,678 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:51,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:51,679 INFO L85 PathProgramCache]: Analyzing trace with hash 678099767, now seen corresponding path program 1 times [2024-10-12 21:23:51,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:51,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111638563] [2024-10-12 21:23:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:51,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:51,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111638563] [2024-10-12 21:23:51,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111638563] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:51,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:51,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:23:51,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106588059] [2024-10-12 21:23:51,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:51,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:23:51,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:51,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:23:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:23:51,822 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:51,897 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2024-10-12 21:23:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:23:51,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-12 21:23:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:51,900 INFO L225 Difference]: With dead ends: 974 [2024-10-12 21:23:51,900 INFO L226 Difference]: Without dead ends: 875 [2024-10-12 21:23:51,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:23:51,904 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 4411 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:51,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 1579 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-10-12 21:23:51,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2024-10-12 21:23:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2024-10-12 21:23:51,919 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2024-10-12 21:23:51,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:51,920 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2024-10-12 21:23:51,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:51,920 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2024-10-12 21:23:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-12 21:23:51,923 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:51,923 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:51,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:23:51,924 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:51,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash -582127364, now seen corresponding path program 1 times [2024-10-12 21:23:51,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:51,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870999605] [2024-10-12 21:23:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:52,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:52,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870999605] [2024-10-12 21:23:52,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870999605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:52,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:52,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:23:52,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402540162] [2024-10-12 21:23:52,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:52,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:23:52,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:52,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:23:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:23:52,017 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:52,048 INFO L93 Difference]: Finished difference Result 879 states and 1619 transitions. [2024-10-12 21:23:52,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:23:52,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-12 21:23:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:52,052 INFO L225 Difference]: With dead ends: 879 [2024-10-12 21:23:52,053 INFO L226 Difference]: Without dead ends: 877 [2024-10-12 21:23:52,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:23:52,053 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 0 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:52,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-10-12 21:23:52,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2024-10-12 21:23:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2024-10-12 21:23:52,066 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2024-10-12 21:23:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:52,066 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2024-10-12 21:23:52,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2024-10-12 21:23:52,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 21:23:52,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:52,068 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:52,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 21:23:52,069 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:52,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:52,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2127458807, now seen corresponding path program 1 times [2024-10-12 21:23:52,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:52,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861444609] [2024-10-12 21:23:52,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:52,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:52,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:52,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861444609] [2024-10-12 21:23:52,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861444609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:52,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:52,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:23:52,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971180386] [2024-10-12 21:23:52,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:52,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:23:52,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:52,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:23:52,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:23:52,102 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:52,126 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2024-10-12 21:23:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:23:52,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-12 21:23:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:52,129 INFO L225 Difference]: With dead ends: 991 [2024-10-12 21:23:52,129 INFO L226 Difference]: Without dead ends: 931 [2024-10-12 21:23:52,129 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 [2024-10-12 21:23:52,130 INFO L432 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:52,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:52,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-10-12 21:23:52,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2024-10-12 21:23:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2024-10-12 21:23:52,144 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2024-10-12 21:23:52,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:52,145 INFO L471 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2024-10-12 21:23:52,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,145 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2024-10-12 21:23:52,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 21:23:52,145 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:52,145 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:52,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 21:23:52,146 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:52,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:52,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1501802743, now seen corresponding path program 1 times [2024-10-12 21:23:52,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:52,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581592308] [2024-10-12 21:23:52,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:52,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:52,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:52,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581592308] [2024-10-12 21:23:52,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581592308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:52,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:52,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:23:52,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086155694] [2024-10-12 21:23:52,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:52,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:23:52,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:52,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:23:52,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:23:52,184 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:52,206 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2024-10-12 21:23:52,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:23:52,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-12 21:23:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:52,210 INFO L225 Difference]: With dead ends: 1211 [2024-10-12 21:23:52,210 INFO L226 Difference]: Without dead ends: 1058 [2024-10-12 21:23:52,211 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 [2024-10-12 21:23:52,212 INFO L432 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:52,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2024-10-12 21:23:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2024-10-12 21:23:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2024-10-12 21:23:52,226 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2024-10-12 21:23:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:52,226 INFO L471 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2024-10-12 21:23:52,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2024-10-12 21:23:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 21:23:52,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:52,228 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:52,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 21:23:52,228 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:52,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:52,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1904431113, now seen corresponding path program 1 times [2024-10-12 21:23:52,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:52,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524222176] [2024-10-12 21:23:52,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:52,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:52,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:52,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524222176] [2024-10-12 21:23:52,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524222176] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:52,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:52,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:23:52,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036075319] [2024-10-12 21:23:52,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:52,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:23:52,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:52,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:23:52,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:23:52,264 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:52,290 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2024-10-12 21:23:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:23:52,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-12 21:23:52,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:52,293 INFO L225 Difference]: With dead ends: 1568 [2024-10-12 21:23:52,294 INFO L226 Difference]: Without dead ends: 1288 [2024-10-12 21:23:52,294 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 [2024-10-12 21:23:52,295 INFO L432 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:52,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2024-10-12 21:23:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2024-10-12 21:23:52,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2024-10-12 21:23:52,315 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2024-10-12 21:23:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:52,315 INFO L471 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2024-10-12 21:23:52,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2024-10-12 21:23:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 21:23:52,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:52,316 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:52,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:23:52,317 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:52,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:52,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1853448570, now seen corresponding path program 1 times [2024-10-12 21:23:52,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:52,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205371157] [2024-10-12 21:23:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:52,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:23:52,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:52,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205371157] [2024-10-12 21:23:52,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205371157] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:52,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:52,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:23:52,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833184024] [2024-10-12 21:23:52,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:52,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:23:52,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:52,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:23:52,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:23:52,421 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:52,503 INFO L93 Difference]: Finished difference Result 2794 states and 4342 transitions. [2024-10-12 21:23:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:23:52,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 21:23:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:52,511 INFO L225 Difference]: With dead ends: 2794 [2024-10-12 21:23:52,511 INFO L226 Difference]: Without dead ends: 2424 [2024-10-12 21:23:52,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:23:52,513 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:52,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:52,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2024-10-12 21:23:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1726. [2024-10-12 21:23:52,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6299303944315546) internal successors, (2810), 1725 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2810 transitions. [2024-10-12 21:23:52,546 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2810 transitions. Word has length 50 [2024-10-12 21:23:52,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:52,546 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2810 transitions. [2024-10-12 21:23:52,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2810 transitions. [2024-10-12 21:23:52,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 21:23:52,547 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:52,547 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:52,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 21:23:52,547 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:52,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:52,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1815862662, now seen corresponding path program 1 times [2024-10-12 21:23:52,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:52,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787090542] [2024-10-12 21:23:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:52,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:23:52,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787090542] [2024-10-12 21:23:52,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787090542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:52,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:52,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:23:52,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651304207] [2024-10-12 21:23:52,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:52,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:23:52,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:23:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:23:52,625 INFO L87 Difference]: Start difference. First operand 1726 states and 2810 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:52,700 INFO L93 Difference]: Finished difference Result 3302 states and 5062 transitions. [2024-10-12 21:23:52,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:23:52,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 21:23:52,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:52,707 INFO L225 Difference]: With dead ends: 3302 [2024-10-12 21:23:52,707 INFO L226 Difference]: Without dead ends: 2792 [2024-10-12 21:23:52,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:23:52,708 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 3035 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3035 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:52,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3035 Valid, 3130 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2024-10-12 21:23:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2418. [2024-10-12 21:23:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2024-10-12 21:23:52,749 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 50 [2024-10-12 21:23:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:52,749 INFO L471 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2024-10-12 21:23:52,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2024-10-12 21:23:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 21:23:52,750 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:52,750 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:52,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 21:23:52,750 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:52,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1590371194, now seen corresponding path program 1 times [2024-10-12 21:23:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:52,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001532050] [2024-10-12 21:23:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:52,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 21:23:52,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:52,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001532050] [2024-10-12 21:23:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001532050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:52,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:52,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:23:52,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052802675] [2024-10-12 21:23:52,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:52,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:23:52,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:52,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:23:52,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:23:52,812 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:52,889 INFO L93 Difference]: Finished difference Result 3810 states and 5778 transitions. [2024-10-12 21:23:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:23:52,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 21:23:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:52,898 INFO L225 Difference]: With dead ends: 3810 [2024-10-12 21:23:52,898 INFO L226 Difference]: Without dead ends: 3300 [2024-10-12 21:23:52,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:23:52,899 INFO L432 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:52,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:52,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2024-10-12 21:23:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2926. [2024-10-12 21:23:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5383036935704515) internal successors, (4498), 2925 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4498 transitions. [2024-10-12 21:23:52,947 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4498 transitions. Word has length 50 [2024-10-12 21:23:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:52,947 INFO L471 AbstractCegarLoop]: Abstraction has 2926 states and 4498 transitions. [2024-10-12 21:23:52,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4498 transitions. [2024-10-12 21:23:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 21:23:52,948 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:52,948 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:52,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 21:23:52,948 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:52,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:52,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1183432324, now seen corresponding path program 1 times [2024-10-12 21:23:52,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:52,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202431] [2024-10-12 21:23:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:52,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:52,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202431] [2024-10-12 21:23:52,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202431] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:52,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:52,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:23:52,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050888367] [2024-10-12 21:23:52,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:52,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:23:52,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:52,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:23:52,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:23:52,998 INFO L87 Difference]: Start difference. First operand 2926 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:53,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:53,040 INFO L93 Difference]: Finished difference Result 5078 states and 7536 transitions. [2024-10-12 21:23:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:23:53,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-12 21:23:53,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:53,048 INFO L225 Difference]: With dead ends: 5078 [2024-10-12 21:23:53,048 INFO L226 Difference]: Without dead ends: 2928 [2024-10-12 21:23:53,051 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 [2024-10-12 21:23:53,052 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:53,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:53,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2024-10-12 21:23:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2926. [2024-10-12 21:23:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5212038303693571) internal successors, (4448), 2925 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4448 transitions. [2024-10-12 21:23:53,100 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4448 transitions. Word has length 51 [2024-10-12 21:23:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:53,101 INFO L471 AbstractCegarLoop]: Abstraction has 2926 states and 4448 transitions. [2024-10-12 21:23:53,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:53,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4448 transitions. [2024-10-12 21:23:53,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 21:23:53,101 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:53,102 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:53,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 21:23:53,102 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:53,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:53,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1165828046, now seen corresponding path program 1 times [2024-10-12 21:23:53,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:53,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791352944] [2024-10-12 21:23:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:53,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791352944] [2024-10-12 21:23:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791352944] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:53,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:53,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:23:53,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891173330] [2024-10-12 21:23:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:53,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:23:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:23:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:23:53,192 INFO L87 Difference]: Start difference. First operand 2926 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:53,227 INFO L93 Difference]: Finished difference Result 3772 states and 5635 transitions. [2024-10-12 21:23:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:23:53,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-12 21:23:53,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:53,232 INFO L225 Difference]: With dead ends: 3772 [2024-10-12 21:23:53,232 INFO L226 Difference]: Without dead ends: 1622 [2024-10-12 21:23:53,234 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 [2024-10-12 21:23:53,234 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:53,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:53,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2024-10-12 21:23:53,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1615. [2024-10-12 21:23:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.6261624302541848) internal successors, (2623), 1614 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2623 transitions. [2024-10-12 21:23:53,266 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2623 transitions. Word has length 52 [2024-10-12 21:23:53,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:53,266 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 2623 transitions. [2024-10-12 21:23:53,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:53,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2623 transitions. [2024-10-12 21:23:53,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-12 21:23:53,267 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:53,267 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:53,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 21:23:53,267 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:53,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:53,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2138930058, now seen corresponding path program 1 times [2024-10-12 21:23:53,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:53,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237426030] [2024-10-12 21:23:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:53,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:53,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:53,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237426030] [2024-10-12 21:23:53,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237426030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:53,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:53,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:23:53,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964311886] [2024-10-12 21:23:53,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:53,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:23:53,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:23:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:23:53,330 INFO L87 Difference]: Start difference. First operand 1615 states and 2623 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:53,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:53,359 INFO L93 Difference]: Finished difference Result 2033 states and 3201 transitions. [2024-10-12 21:23:53,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:23:53,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-12 21:23:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:53,362 INFO L225 Difference]: With dead ends: 2033 [2024-10-12 21:23:53,362 INFO L226 Difference]: Without dead ends: 1203 [2024-10-12 21:23:53,363 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 [2024-10-12 21:23:53,364 INFO L432 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:53,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:53,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2024-10-12 21:23:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2024-10-12 21:23:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1199 states have (on average 1.6997497914929107) internal successors, (2038), 1200 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2038 transitions. [2024-10-12 21:23:53,384 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2038 transitions. Word has length 53 [2024-10-12 21:23:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:53,384 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 2038 transitions. [2024-10-12 21:23:53,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:53,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2038 transitions. [2024-10-12 21:23:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 21:23:53,385 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:53,385 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:53,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 21:23:53,385 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:53,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:53,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1489407768, now seen corresponding path program 1 times [2024-10-12 21:23:53,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:53,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312682658] [2024-10-12 21:23:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:53,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:54,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:54,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312682658] [2024-10-12 21:23:54,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312682658] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:23:54,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286304647] [2024-10-12 21:23:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:54,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:23:54,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:23:54,521 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) [2024-10-12 21:23:54,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:23:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:54,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 21:23:54,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:23:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:23:54,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:23:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:23:54,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286304647] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:23:54,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:23:54,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2024-10-12 21:23:54,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24520662] [2024-10-12 21:23:54,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:23:54,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 21:23:54,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:54,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 21:23:54,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-10-12 21:23:54,871 INFO L87 Difference]: Start difference. First operand 1201 states and 2038 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:56,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:56,821 INFO L93 Difference]: Finished difference Result 3410 states and 4968 transitions. [2024-10-12 21:23:56,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-12 21:23:56,822 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-12 21:23:56,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:56,827 INFO L225 Difference]: With dead ends: 3410 [2024-10-12 21:23:56,828 INFO L226 Difference]: Without dead ends: 2994 [2024-10-12 21:23:56,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=719, Invalid=3063, Unknown=0, NotChecked=0, Total=3782 [2024-10-12 21:23:56,837 INFO L432 NwaCegarLoop]: 1488 mSDtfsCounter, 12963 mSDsluCounter, 6144 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12963 SdHoareTripleChecker+Valid, 7632 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:56,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12963 Valid, 7632 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:23:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2024-10-12 21:23:56,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2848. [2024-10-12 21:23:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2846 states have (on average 1.4462403373155306) internal successors, (4116), 2847 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4116 transitions. [2024-10-12 21:23:56,889 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4116 transitions. Word has length 55 [2024-10-12 21:23:56,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:56,889 INFO L471 AbstractCegarLoop]: Abstraction has 2848 states and 4116 transitions. [2024-10-12 21:23:56,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4116 transitions. [2024-10-12 21:23:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 21:23:56,890 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:56,890 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:56,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 21:23:57,090 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,SelfDestructingSolverStorable15 [2024-10-12 21:23:57,091 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:57,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:57,091 INFO L85 PathProgramCache]: Analyzing trace with hash 375754418, now seen corresponding path program 1 times [2024-10-12 21:23:57,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:57,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928477802] [2024-10-12 21:23:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:57,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:58,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928477802] [2024-10-12 21:23:58,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928477802] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:23:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410773308] [2024-10-12 21:23:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:58,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:23:58,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:23:58,175 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) [2024-10-12 21:23:58,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 21:23:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:58,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 21:23:58,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:23:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:58,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:23:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:59,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410773308] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:23:59,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:23:59,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-10-12 21:23:59,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384419619] [2024-10-12 21:23:59,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:23:59,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 21:23:59,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:59,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 21:23:59,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-10-12 21:23:59,005 INFO L87 Difference]: Start difference. First operand 2848 states and 4116 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 25 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:59,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:59,407 INFO L93 Difference]: Finished difference Result 6561 states and 8923 transitions. [2024-10-12 21:23:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:23:59,408 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 25 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 21:23:59,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:59,415 INFO L225 Difference]: With dead ends: 6561 [2024-10-12 21:23:59,415 INFO L226 Difference]: Without dead ends: 4874 [2024-10-12 21:23:59,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 21:23:59,417 INFO L432 NwaCegarLoop]: 1485 mSDtfsCounter, 14967 mSDsluCounter, 4680 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14967 SdHoareTripleChecker+Valid, 6165 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:59,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14967 Valid, 6165 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:23:59,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2024-10-12 21:23:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4808. [2024-10-12 21:23:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4808 states, 4806 states have (on average 1.361839367457345) internal successors, (6545), 4807 states have internal predecessors, (6545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4808 states to 4808 states and 6545 transitions. [2024-10-12 21:23:59,504 INFO L78 Accepts]: Start accepts. Automaton has 4808 states and 6545 transitions. Word has length 56 [2024-10-12 21:23:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:59,504 INFO L471 AbstractCegarLoop]: Abstraction has 4808 states and 6545 transitions. [2024-10-12 21:23:59,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 25 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 4808 states and 6545 transitions. [2024-10-12 21:23:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 21:23:59,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:59,506 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:59,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 21:23:59,707 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,SelfDestructingSolverStorable16 [2024-10-12 21:23:59,707 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:59,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash -294784256, now seen corresponding path program 1 times [2024-10-12 21:23:59,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:59,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513197159] [2024-10-12 21:23:59,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:59,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:59,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:59,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513197159] [2024-10-12 21:23:59,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513197159] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:23:59,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711012119] [2024-10-12 21:23:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:59,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:23:59,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:23:59,926 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) [2024-10-12 21:23:59,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 21:24:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:24:00,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-12 21:24:00,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:24:00,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:00,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:24:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:01,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711012119] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:24:01,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:24:01,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 18] total 39 [2024-10-12 21:24:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325502913] [2024-10-12 21:24:01,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:24:01,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-12 21:24:01,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:24:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-12 21:24:01,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1210, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 21:24:01,854 INFO L87 Difference]: Start difference. First operand 4808 states and 6545 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:24:04,117 INFO L93 Difference]: Finished difference Result 12321 states and 16155 transitions. [2024-10-12 21:24:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-12 21:24:04,118 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 21:24:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:24:04,136 INFO L225 Difference]: With dead ends: 12321 [2024-10-12 21:24:04,136 INFO L226 Difference]: Without dead ends: 8669 [2024-10-12 21:24:04,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1798 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1545, Invalid=5261, Unknown=0, NotChecked=0, Total=6806 [2024-10-12 21:24:04,141 INFO L432 NwaCegarLoop]: 1487 mSDtfsCounter, 14748 mSDsluCounter, 10803 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14748 SdHoareTripleChecker+Valid, 12290 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:24:04,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14748 Valid, 12290 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:24:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2024-10-12 21:24:04,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 8653. [2024-10-12 21:24:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8653 states, 8651 states have (on average 1.3141833314067737) internal successors, (11369), 8652 states have internal predecessors, (11369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:04,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8653 states to 8653 states and 11369 transitions. [2024-10-12 21:24:04,317 INFO L78 Accepts]: Start accepts. Automaton has 8653 states and 11369 transitions. Word has length 56 [2024-10-12 21:24:04,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:24:04,318 INFO L471 AbstractCegarLoop]: Abstraction has 8653 states and 11369 transitions. [2024-10-12 21:24:04,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:04,318 INFO L276 IsEmpty]: Start isEmpty. Operand 8653 states and 11369 transitions. [2024-10-12 21:24:04,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 21:24:04,318 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:24:04,318 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:24:04,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 21:24:04,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 21:24:04,519 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:24:04,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:24:04,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1035298560, now seen corresponding path program 1 times [2024-10-12 21:24:04,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:24:04,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298272559] [2024-10-12 21:24:04,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:24:04,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:24:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:24:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:04,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:24:04,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298272559] [2024-10-12 21:24:04,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298272559] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:24:04,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957047698] [2024-10-12 21:24:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:24:04,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:24:04,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:24:04,741 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) [2024-10-12 21:24:04,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 21:24:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:24:04,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 21:24:04,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:24:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:05,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:24:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:05,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957047698] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:24:05,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:24:05,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-10-12 21:24:05,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94319994] [2024-10-12 21:24:05,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:24:05,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-12 21:24:05,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:24:05,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-12 21:24:05,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-10-12 21:24:05,950 INFO L87 Difference]: Start difference. First operand 8653 states and 11369 transitions. Second operand has 32 states, 32 states have (on average 4.71875) internal successors, (151), 32 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:07,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:24:07,402 INFO L93 Difference]: Finished difference Result 16693 states and 21624 transitions. [2024-10-12 21:24:07,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-12 21:24:07,402 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.71875) internal successors, (151), 32 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 21:24:07,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:24:07,412 INFO L225 Difference]: With dead ends: 16693 [2024-10-12 21:24:07,412 INFO L226 Difference]: Without dead ends: 9369 [2024-10-12 21:24:07,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=786, Invalid=3246, Unknown=0, NotChecked=0, Total=4032 [2024-10-12 21:24:07,418 INFO L432 NwaCegarLoop]: 1477 mSDtfsCounter, 14577 mSDsluCounter, 16413 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14577 SdHoareTripleChecker+Valid, 17890 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:24:07,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14577 Valid, 17890 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:24:07,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9369 states. [2024-10-12 21:24:07,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9369 to 7055. [2024-10-12 21:24:07,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7055 states, 7053 states have (on average 1.309230114844747) internal successors, (9234), 7054 states have internal predecessors, (9234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7055 states to 7055 states and 9234 transitions. [2024-10-12 21:24:07,576 INFO L78 Accepts]: Start accepts. Automaton has 7055 states and 9234 transitions. Word has length 56 [2024-10-12 21:24:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:24:07,576 INFO L471 AbstractCegarLoop]: Abstraction has 7055 states and 9234 transitions. [2024-10-12 21:24:07,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.71875) internal successors, (151), 32 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 7055 states and 9234 transitions. [2024-10-12 21:24:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:24:07,577 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:24:07,577 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:24:07,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 21:24:07,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:24:07,782 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:24:07,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:24:07,783 INFO L85 PathProgramCache]: Analyzing trace with hash 200986498, now seen corresponding path program 1 times [2024-10-12 21:24:07,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:24:07,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074576798] [2024-10-12 21:24:07,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:24:07,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:24:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:24:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:08,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:24:08,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074576798] [2024-10-12 21:24:08,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074576798] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:24:08,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667423499] [2024-10-12 21:24:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:24:08,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:24:08,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:24:08,264 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) [2024-10-12 21:24:08,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 21:24:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:24:08,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-12 21:24:08,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:24:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:09,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:24:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:11,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667423499] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:24:11,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:24:11,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 17] total 47 [2024-10-12 21:24:11,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41436897] [2024-10-12 21:24:11,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:24:11,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-12 21:24:11,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:24:11,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-12 21:24:11,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1875, Unknown=0, NotChecked=0, Total=2162 [2024-10-12 21:24:11,902 INFO L87 Difference]: Start difference. First operand 7055 states and 9234 transitions. Second operand has 47 states, 47 states have (on average 3.3404255319148937) internal successors, (157), 47 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:24:20,309 INFO L93 Difference]: Finished difference Result 12159 states and 15668 transitions. [2024-10-12 21:24:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-10-12 21:24:20,310 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.3404255319148937) internal successors, (157), 47 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-12 21:24:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:24:20,319 INFO L225 Difference]: With dead ends: 12159 [2024-10-12 21:24:20,320 INFO L226 Difference]: Without dead ends: 8299 [2024-10-12 21:24:20,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4063 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2878, Invalid=11884, Unknown=0, NotChecked=0, Total=14762 [2024-10-12 21:24:20,326 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 26584 mSDsluCounter, 21308 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26584 SdHoareTripleChecker+Valid, 22825 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:24:20,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26584 Valid, 22825 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 21:24:20,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8299 states. [2024-10-12 21:24:20,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8299 to 5549. [2024-10-12 21:24:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5547 states have (on average 1.3277447268793943) internal successors, (7365), 5548 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 7365 transitions. [2024-10-12 21:24:20,517 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 7365 transitions. Word has length 58 [2024-10-12 21:24:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:24:20,517 INFO L471 AbstractCegarLoop]: Abstraction has 5549 states and 7365 transitions. [2024-10-12 21:24:20,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.3404255319148937) internal successors, (157), 47 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 7365 transitions. [2024-10-12 21:24:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-12 21:24:20,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:24:20,518 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:24:20,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 21:24:20,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:24:20,718 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:24:20,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:24:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash -56380255, now seen corresponding path program 1 times [2024-10-12 21:24:20,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:24:20,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822733333] [2024-10-12 21:24:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:24:20,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:24:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:24:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:20,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:24:20,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822733333] [2024-10-12 21:24:20,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822733333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:24:20,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:24:20,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 21:24:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415596450] [2024-10-12 21:24:20,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:24:20,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:24:20,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:24:20,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:24:20,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:24:20,772 INFO L87 Difference]: Start difference. First operand 5549 states and 7365 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:23,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:24:23,042 INFO L93 Difference]: Finished difference Result 7053 states and 10238 transitions. [2024-10-12 21:24:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:24:23,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-12 21:24:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:24:23,048 INFO L225 Difference]: With dead ends: 7053 [2024-10-12 21:24:23,048 INFO L226 Difference]: Without dead ends: 6300 [2024-10-12 21:24:23,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:24:23,050 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 805 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:24:23,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 538 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-12 21:24:23,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6300 states. [2024-10-12 21:24:23,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6300 to 6300. [2024-10-12 21:24:23,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6300 states, 6298 states have (on average 1.32486503651953) internal successors, (8344), 6299 states have internal predecessors, (8344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:23,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6300 states to 6300 states and 8344 transitions. [2024-10-12 21:24:23,211 INFO L78 Accepts]: Start accepts. Automaton has 6300 states and 8344 transitions. Word has length 62 [2024-10-12 21:24:23,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:24:23,212 INFO L471 AbstractCegarLoop]: Abstraction has 6300 states and 8344 transitions. [2024-10-12 21:24:23,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:23,212 INFO L276 IsEmpty]: Start isEmpty. Operand 6300 states and 8344 transitions. [2024-10-12 21:24:23,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 21:24:23,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:24:23,213 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:24:23,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 21:24:23,214 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:24:23,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:24:23,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1489464124, now seen corresponding path program 1 times [2024-10-12 21:24:23,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:24:23,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554399422] [2024-10-12 21:24:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:24:23,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:24:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:24:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:23,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:24:23,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554399422] [2024-10-12 21:24:23,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554399422] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:24:23,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304868800] [2024-10-12 21:24:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:24:23,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:24:23,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:24:23,964 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:24:23,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 21:24:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:24:24,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 21:24:24,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:24:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:24,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:24:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 14 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:25,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304868800] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:24:25,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:24:25,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 38 [2024-10-12 21:24:25,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8369637] [2024-10-12 21:24:25,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:24:25,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-12 21:24:25,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:24:25,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-12 21:24:25,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 21:24:25,335 INFO L87 Difference]: Start difference. First operand 6300 states and 8344 transitions. Second operand has 38 states, 38 states have (on average 6.7894736842105265) internal successors, (258), 38 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:24:31,320 INFO L93 Difference]: Finished difference Result 15687 states and 19976 transitions. [2024-10-12 21:24:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-10-12 21:24:31,322 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.7894736842105265) internal successors, (258), 38 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-10-12 21:24:31,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:24:31,330 INFO L225 Difference]: With dead ends: 15687 [2024-10-12 21:24:31,330 INFO L226 Difference]: Without dead ends: 12752 [2024-10-12 21:24:31,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3912 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2200, Invalid=13052, Unknown=0, NotChecked=0, Total=15252 [2024-10-12 21:24:31,336 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 16735 mSDsluCounter, 27739 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16735 SdHoareTripleChecker+Valid, 29259 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:24:31,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16735 Valid, 29259 Invalid, 2406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [110 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 21:24:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12752 states. [2024-10-12 21:24:31,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12752 to 8408. [2024-10-12 21:24:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8408 states, 8406 states have (on average 1.298596240780395) internal successors, (10916), 8407 states have internal predecessors, (10916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8408 states to 8408 states and 10916 transitions. [2024-10-12 21:24:31,609 INFO L78 Accepts]: Start accepts. Automaton has 8408 states and 10916 transitions. Word has length 94 [2024-10-12 21:24:31,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:24:31,609 INFO L471 AbstractCegarLoop]: Abstraction has 8408 states and 10916 transitions. [2024-10-12 21:24:31,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.7894736842105265) internal successors, (258), 38 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:24:31,609 INFO L276 IsEmpty]: Start isEmpty. Operand 8408 states and 10916 transitions. [2024-10-12 21:24:31,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 21:24:31,611 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:24:31,611 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:24:31,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 21:24:31,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:24:31,812 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:24:31,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:24:31,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1281352916, now seen corresponding path program 1 times [2024-10-12 21:24:31,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:24:31,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956343802] [2024-10-12 21:24:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:24:31,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:24:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:24:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 29 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:32,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:24:32,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956343802] [2024-10-12 21:24:32,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956343802] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:24:32,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619594003] [2024-10-12 21:24:32,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:24:32,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:24:32,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:24:32,302 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:24:32,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 21:24:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:24:32,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-12 21:24:32,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:24:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:34,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:24:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:24:36,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619594003] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:24:36,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:24:36,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2024-10-12 21:24:36,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465632934] [2024-10-12 21:24:36,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:24:36,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-10-12 21:24:36,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:24:36,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-10-12 21:24:36,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=3018, Unknown=0, NotChecked=0, Total=3306 [2024-10-12 21:24:36,943 INFO L87 Difference]: Start difference. First operand 8408 states and 10916 transitions. Second operand has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:25:02,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:25:02,578 INFO L93 Difference]: Finished difference Result 16155 states and 20480 transitions. [2024-10-12 21:25:02,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2024-10-12 21:25:02,579 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-12 21:25:02,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:25:02,588 INFO L225 Difference]: With dead ends: 16155 [2024-10-12 21:25:02,588 INFO L226 Difference]: Without dead ends: 11219 [2024-10-12 21:25:02,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16825 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=6552, Invalid=46118, Unknown=0, NotChecked=0, Total=52670 [2024-10-12 21:25:02,596 INFO L432 NwaCegarLoop]: 1595 mSDtfsCounter, 37595 mSDsluCounter, 29840 mSDsCounter, 0 mSdLazyCounter, 4941 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37595 SdHoareTripleChecker+Valid, 31435 SdHoareTripleChecker+Invalid, 5116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 4941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:25:02,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37595 Valid, 31435 Invalid, 5116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [175 Valid, 4941 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 21:25:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11219 states. [2024-10-12 21:25:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11219 to 7587. [2024-10-12 21:25:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7587 states, 7585 states have (on average 1.295187870797627) internal successors, (9824), 7586 states have internal predecessors, (9824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:25:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 9824 transitions. [2024-10-12 21:25:02,905 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 9824 transitions. Word has length 95 [2024-10-12 21:25:02,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:25:02,905 INFO L471 AbstractCegarLoop]: Abstraction has 7587 states and 9824 transitions. [2024-10-12 21:25:02,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:25:02,906 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 9824 transitions. [2024-10-12 21:25:02,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 21:25:02,907 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:25:02,907 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:25:02,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 21:25:03,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:25:03,108 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:25:03,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:25:03,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1419583104, now seen corresponding path program 1 times [2024-10-12 21:25:03,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:25:03,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402028814] [2024-10-12 21:25:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:25:03,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:25:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:25:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:25:03,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:25:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402028814] [2024-10-12 21:25:03,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402028814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:25:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28101823] [2024-10-12 21:25:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:25:03,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:25:03,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:25:03,690 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:25:03,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 21:25:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:25:03,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-12 21:25:03,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:25:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:25:05,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:25:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:25:09,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28101823] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:25:09,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:25:09,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 24, 26] total 63 [2024-10-12 21:25:09,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377659934] [2024-10-12 21:25:09,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:25:09,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-10-12 21:25:09,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:25:09,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-10-12 21:25:09,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=3411, Unknown=0, NotChecked=0, Total=4032 [2024-10-12 21:25:09,964 INFO L87 Difference]: Start difference. First operand 7587 states and 9824 transitions. Second operand has 64 states, 64 states have (on average 4.015625) internal successors, (257), 63 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)