./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.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 ab4ce27c037a23a1acb050e4e5e47861985f2a45717e88488eff45dc32b3cf64 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 03:30:59,799 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 03:30:59,864 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 03:30:59,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 03:30:59,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 03:30:59,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 03:30:59,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 03:30:59,902 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 03:30:59,903 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 03:30:59,905 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 03:30:59,905 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 03:30:59,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 03:30:59,906 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 03:30:59,908 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 03:30:59,908 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 03:30:59,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 03:30:59,909 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 03:30:59,909 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 03:30:59,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 03:30:59,910 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 03:30:59,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 03:30:59,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 03:30:59,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 03:30:59,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 03:30:59,912 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 03:30:59,912 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 03:30:59,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 03:30:59,913 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 03:30:59,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 03:30:59,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 03:30:59,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 03:30:59,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 03:30:59,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 03:30:59,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 03:30:59,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 03:30:59,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 03:30:59,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 03:30:59,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 03:30:59,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 03:30:59,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 03:30:59,917 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 03:30:59,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 03:30:59,918 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab4ce27c037a23a1acb050e4e5e47861985f2a45717e88488eff45dc32b3cf64 [2024-10-14 03:31:00,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 03:31:00,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 03:31:00,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 03:31:00,226 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 03:31:00,227 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 03:31:00,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2024-10-14 03:31:01,635 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 03:31:01,859 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 03:31:01,860 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2024-10-14 03:31:01,871 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/870176449/d4b820f2ccfb449290773e7d33b24b71/FLAGbff307adf [2024-10-14 03:31:01,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/870176449/d4b820f2ccfb449290773e7d33b24b71 [2024-10-14 03:31:01,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 03:31:01,892 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 03:31:01,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 03:31:01,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 03:31:01,897 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 03:31:01,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:31:01" (1/1) ... [2024-10-14 03:31:01,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639d8fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:01, skipping insertion in model container [2024-10-14 03:31:01,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:31:01" (1/1) ... [2024-10-14 03:31:01,933 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 03:31:02,150 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/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2024-10-14 03:31:02,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 03:31:02,164 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 03:31:02,212 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/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2024-10-14 03:31:02,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 03:31:02,232 INFO L204 MainTranslator]: Completed translation [2024-10-14 03:31:02,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02 WrapperNode [2024-10-14 03:31:02,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 03:31:02,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 03:31:02,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 03:31:02,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 03:31:02,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,298 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 381 [2024-10-14 03:31:02,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 03:31:02,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 03:31:02,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 03:31:02,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 03:31:02,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,342 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]. [2024-10-14 03:31:02,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,368 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 03:31:02,381 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 03:31:02,381 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 03:31:02,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 03:31:02,382 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (1/1) ... [2024-10-14 03:31:02,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 03:31:02,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:31:02,423 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) [2024-10-14 03:31:02,426 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 [2024-10-14 03:31:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 03:31:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 03:31:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 03:31:02,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 03:31:02,586 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 03:31:02,588 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 03:31:03,117 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-10-14 03:31:03,117 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 03:31:03,166 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 03:31:03,166 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 03:31:03,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:31:03 BoogieIcfgContainer [2024-10-14 03:31:03,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 03:31:03,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 03:31:03,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 03:31:03,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 03:31:03,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:31:01" (1/3) ... [2024-10-14 03:31:03,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375c2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:31:03, skipping insertion in model container [2024-10-14 03:31:03,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:02" (2/3) ... [2024-10-14 03:31:03,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375c2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:31:03, skipping insertion in model container [2024-10-14 03:31:03,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:31:03" (3/3) ... [2024-10-14 03:31:03,174 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2024-10-14 03:31:03,194 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 03:31:03,194 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 03:31:03,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 03:31:03,265 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@21d43ee4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 03:31:03,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 03:31:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 96 states have (on average 1.78125) internal successors, (171), 97 states have internal predecessors, (171), 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) [2024-10-14 03:31:03,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-14 03:31:03,277 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:03,278 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] [2024-10-14 03:31:03,279 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:03,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:03,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1398938888, now seen corresponding path program 1 times [2024-10-14 03:31:03,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:03,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507440254] [2024-10-14 03:31:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:03,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:03,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:03,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507440254] [2024-10-14 03:31:03,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507440254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:03,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:03,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 03:31:03,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250097363] [2024-10-14 03:31:03,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:03,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 03:31:03,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:03,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 03:31:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 03:31:03,615 INFO L87 Difference]: Start difference. First operand has 98 states, 96 states have (on average 1.78125) internal successors, (171), 97 states have internal predecessors, (171), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2024-10-14 03:31:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:03,651 INFO L93 Difference]: Finished difference Result 159 states and 273 transitions. [2024-10-14 03:31:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 03:31:03,654 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2024-10-14 03:31:03,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:03,661 INFO L225 Difference]: With dead ends: 159 [2024-10-14 03:31:03,661 INFO L226 Difference]: Without dead ends: 96 [2024-10-14 03:31:03,663 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 [2024-10-14 03:31:03,666 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 03:31:03,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-14 03:31:03,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-10-14 03:31:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.7473684210526317) internal successors, (166), 95 states have internal predecessors, (166), 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) [2024-10-14 03:31:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 166 transitions. [2024-10-14 03:31:03,715 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 166 transitions. Word has length 30 [2024-10-14 03:31:03,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:03,715 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 166 transitions. [2024-10-14 03:31:03,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2024-10-14 03:31:03,716 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 166 transitions. [2024-10-14 03:31:03,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-14 03:31:03,717 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:03,717 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] [2024-10-14 03:31:03,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 03:31:03,718 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:03,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:03,718 INFO L85 PathProgramCache]: Analyzing trace with hash 524289146, now seen corresponding path program 1 times [2024-10-14 03:31:03,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:03,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447686707] [2024-10-14 03:31:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:03,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:03,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:03,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447686707] [2024-10-14 03:31:03,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447686707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:03,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:03,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 03:31:03,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309647986] [2024-10-14 03:31:03,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:03,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 03:31:03,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:03,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 03:31:03,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 03:31:03,983 INFO L87 Difference]: Start difference. First operand 96 states and 166 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-10-14 03:31:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:04,086 INFO L93 Difference]: Finished difference Result 159 states and 267 transitions. [2024-10-14 03:31:04,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 03:31:04,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2024-10-14 03:31:04,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:04,091 INFO L225 Difference]: With dead ends: 159 [2024-10-14 03:31:04,091 INFO L226 Difference]: Without dead ends: 96 [2024-10-14 03:31:04,092 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 [2024-10-14 03:31:04,093 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:31:04,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:31:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-14 03:31:04,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-10-14 03:31:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.4105263157894736) internal successors, (134), 95 states have internal predecessors, (134), 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) [2024-10-14 03:31:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 134 transitions. [2024-10-14 03:31:04,107 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 134 transitions. Word has length 30 [2024-10-14 03:31:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:04,107 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 134 transitions. [2024-10-14 03:31:04,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-10-14 03:31:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 134 transitions. [2024-10-14 03:31:04,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 03:31:04,109 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:04,110 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] [2024-10-14 03:31:04,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 03:31:04,110 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:04,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:04,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1941406465, now seen corresponding path program 1 times [2024-10-14 03:31:04,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:04,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271426478] [2024-10-14 03:31:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:04,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:04,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:04,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271426478] [2024-10-14 03:31:04,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271426478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:04,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:04,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 03:31:04,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392674476] [2024-10-14 03:31:04,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:04,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 03:31:04,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:04,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 03:31:04,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 03:31:04,313 INFO L87 Difference]: Start difference. First operand 96 states and 134 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-10-14 03:31:04,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:04,366 INFO L93 Difference]: Finished difference Result 208 states and 316 transitions. [2024-10-14 03:31:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 03:31:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2024-10-14 03:31:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:04,372 INFO L225 Difference]: With dead ends: 208 [2024-10-14 03:31:04,372 INFO L226 Difference]: Without dead ends: 148 [2024-10-14 03:31:04,372 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 [2024-10-14 03:31:04,376 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 78 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 277 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 [2024-10-14 03:31:04,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 277 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-10-14 03:31:04,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2024-10-14 03:31:04,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.4896551724137932) internal successors, (216), 145 states have internal predecessors, (216), 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) [2024-10-14 03:31:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 216 transitions. [2024-10-14 03:31:04,396 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 216 transitions. Word has length 61 [2024-10-14 03:31:04,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:04,397 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 216 transitions. [2024-10-14 03:31:04,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-10-14 03:31:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 216 transitions. [2024-10-14 03:31:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 03:31:04,401 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:04,401 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] [2024-10-14 03:31:04,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 03:31:04,402 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:04,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:04,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1144648734, now seen corresponding path program 1 times [2024-10-14 03:31:04,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:04,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585616248] [2024-10-14 03:31:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:04,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:04,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:04,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585616248] [2024-10-14 03:31:04,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585616248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:04,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:04,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 03:31:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891854943] [2024-10-14 03:31:04,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:04,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 03:31:04,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 03:31:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 03:31:04,681 INFO L87 Difference]: Start difference. First operand 146 states and 216 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2024-10-14 03:31:04,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:04,858 INFO L93 Difference]: Finished difference Result 806 states and 1296 transitions. [2024-10-14 03:31:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 03:31:04,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2024-10-14 03:31:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:04,866 INFO L225 Difference]: With dead ends: 806 [2024-10-14 03:31:04,866 INFO L226 Difference]: Without dead ends: 696 [2024-10-14 03:31:04,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-14 03:31:04,872 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1296 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:31:04,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 838 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:31:04,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-10-14 03:31:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 254. [2024-10-14 03:31:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5454545454545454) internal successors, (391), 253 states have internal predecessors, (391), 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) [2024-10-14 03:31:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 391 transitions. [2024-10-14 03:31:04,911 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 391 transitions. Word has length 61 [2024-10-14 03:31:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:04,912 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 391 transitions. [2024-10-14 03:31:04,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2024-10-14 03:31:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 391 transitions. [2024-10-14 03:31:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-14 03:31:04,914 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:04,914 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] [2024-10-14 03:31:04,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 03:31:04,914 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:04,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:04,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1111312794, now seen corresponding path program 1 times [2024-10-14 03:31:04,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:04,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674427246] [2024-10-14 03:31:04,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:04,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:05,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:05,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674427246] [2024-10-14 03:31:05,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674427246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:05,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:05,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 03:31:05,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89782822] [2024-10-14 03:31:05,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:05,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 03:31:05,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:05,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 03:31:05,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 03:31:05,257 INFO L87 Difference]: Start difference. First operand 254 states and 391 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2024-10-14 03:31:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:05,288 INFO L93 Difference]: Finished difference Result 264 states and 404 transitions. [2024-10-14 03:31:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 03:31:05,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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 [2024-10-14 03:31:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:05,290 INFO L225 Difference]: With dead ends: 264 [2024-10-14 03:31:05,290 INFO L226 Difference]: Without dead ends: 262 [2024-10-14 03:31:05,291 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 [2024-10-14 03:31:05,291 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 03:31:05,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 383 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-10-14 03:31:05,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2024-10-14 03:31:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.528735632183908) internal successors, (399), 261 states have internal predecessors, (399), 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) [2024-10-14 03:31:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 399 transitions. [2024-10-14 03:31:05,314 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 399 transitions. Word has length 62 [2024-10-14 03:31:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:05,315 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 399 transitions. [2024-10-14 03:31:05,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2024-10-14 03:31:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 399 transitions. [2024-10-14 03:31:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-14 03:31:05,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:05,317 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, 1] [2024-10-14 03:31:05,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 03:31:05,318 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:05,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:05,322 INFO L85 PathProgramCache]: Analyzing trace with hash 91960006, now seen corresponding path program 1 times [2024-10-14 03:31:05,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:05,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450929377] [2024-10-14 03:31:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:05,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:05,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:05,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450929377] [2024-10-14 03:31:05,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450929377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:05,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:05,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 03:31:05,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832650603] [2024-10-14 03:31:05,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:05,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 03:31:05,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:05,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 03:31:05,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 03:31:05,448 INFO L87 Difference]: Start difference. First operand 262 states and 399 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-14 03:31:05,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:05,487 INFO L93 Difference]: Finished difference Result 686 states and 1077 transitions. [2024-10-14 03:31:05,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 03:31:05,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-10-14 03:31:05,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:05,491 INFO L225 Difference]: With dead ends: 686 [2024-10-14 03:31:05,491 INFO L226 Difference]: Without dead ends: 460 [2024-10-14 03:31:05,492 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 [2024-10-14 03:31:05,496 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 62 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 03:31:05,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 220 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-10-14 03:31:05,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 454. [2024-10-14 03:31:05,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.5474613686534215) internal successors, (701), 453 states have internal predecessors, (701), 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) [2024-10-14 03:31:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 701 transitions. [2024-10-14 03:31:05,520 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 701 transitions. Word has length 63 [2024-10-14 03:31:05,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:05,520 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 701 transitions. [2024-10-14 03:31:05,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-14 03:31:05,520 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 701 transitions. [2024-10-14 03:31:05,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-14 03:31:05,524 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:05,525 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, 1, 1] [2024-10-14 03:31:05,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 03:31:05,525 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:05,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:05,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1478259839, now seen corresponding path program 1 times [2024-10-14 03:31:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:05,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924627201] [2024-10-14 03:31:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:05,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:05,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:05,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924627201] [2024-10-14 03:31:05,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924627201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:05,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:05,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 03:31:05,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237551726] [2024-10-14 03:31:05,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:05,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 03:31:05,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 03:31:05,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 03:31:05,608 INFO L87 Difference]: Start difference. First operand 454 states and 701 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-14 03:31:05,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:05,647 INFO L93 Difference]: Finished difference Result 1226 states and 1919 transitions. [2024-10-14 03:31:05,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 03:31:05,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2024-10-14 03:31:05,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:05,653 INFO L225 Difference]: With dead ends: 1226 [2024-10-14 03:31:05,653 INFO L226 Difference]: Without dead ends: 808 [2024-10-14 03:31:05,654 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 [2024-10-14 03:31:05,656 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 70 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 262 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 [2024-10-14 03:31:05,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 262 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-10-14 03:31:05,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 806. [2024-10-14 03:31:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 1.546583850931677) internal successors, (1245), 805 states have internal predecessors, (1245), 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) [2024-10-14 03:31:05,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1245 transitions. [2024-10-14 03:31:05,688 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1245 transitions. Word has length 64 [2024-10-14 03:31:05,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:05,689 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1245 transitions. [2024-10-14 03:31:05,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-14 03:31:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1245 transitions. [2024-10-14 03:31:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-14 03:31:05,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:05,690 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, 1, 1] [2024-10-14 03:31:05,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 03:31:05,691 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:05,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:05,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1951988575, now seen corresponding path program 1 times [2024-10-14 03:31:05,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:05,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268033222] [2024-10-14 03:31:05,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:05,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:05,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:05,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268033222] [2024-10-14 03:31:05,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268033222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:05,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:05,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 03:31:05,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691286775] [2024-10-14 03:31:05,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:05,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 03:31:05,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:05,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 03:31:05,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 03:31:05,793 INFO L87 Difference]: Start difference. First operand 806 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-14 03:31:05,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:05,846 INFO L93 Difference]: Finished difference Result 2218 states and 3439 transitions. [2024-10-14 03:31:05,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 03:31:05,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2024-10-14 03:31:05,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:05,851 INFO L225 Difference]: With dead ends: 2218 [2024-10-14 03:31:05,851 INFO L226 Difference]: Without dead ends: 1448 [2024-10-14 03:31:05,852 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 [2024-10-14 03:31:05,853 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 74 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 275 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 [2024-10-14 03:31:05,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 275 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:05,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2024-10-14 03:31:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1446. [2024-10-14 03:31:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 1.5314878892733563) internal successors, (2213), 1445 states have internal predecessors, (2213), 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) [2024-10-14 03:31:05,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 2213 transitions. [2024-10-14 03:31:05,892 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 2213 transitions. Word has length 64 [2024-10-14 03:31:05,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:05,893 INFO L471 AbstractCegarLoop]: Abstraction has 1446 states and 2213 transitions. [2024-10-14 03:31:05,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-14 03:31:05,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 2213 transitions. [2024-10-14 03:31:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-14 03:31:05,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:05,894 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, 1, 1] [2024-10-14 03:31:05,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 03:31:05,894 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:05,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:05,895 INFO L85 PathProgramCache]: Analyzing trace with hash -762231071, now seen corresponding path program 1 times [2024-10-14 03:31:05,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:05,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638235278] [2024-10-14 03:31:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:05,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:05,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:05,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638235278] [2024-10-14 03:31:05,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638235278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:05,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:05,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 03:31:05,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596811369] [2024-10-14 03:31:05,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:05,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 03:31:05,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:05,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 03:31:05,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 03:31:05,954 INFO L87 Difference]: Start difference. First operand 1446 states and 2213 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-14 03:31:06,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:06,016 INFO L93 Difference]: Finished difference Result 4010 states and 6119 transitions. [2024-10-14 03:31:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 03:31:06,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2024-10-14 03:31:06,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:06,027 INFO L225 Difference]: With dead ends: 4010 [2024-10-14 03:31:06,027 INFO L226 Difference]: Without dead ends: 2600 [2024-10-14 03:31:06,029 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 [2024-10-14 03:31:06,029 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 82 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 291 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 [2024-10-14 03:31:06,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 291 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2024-10-14 03:31:06,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2598. [2024-10-14 03:31:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 2597 states have (on average 1.5051983057373892) internal successors, (3909), 2597 states have internal predecessors, (3909), 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) [2024-10-14 03:31:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3909 transitions. [2024-10-14 03:31:06,108 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3909 transitions. Word has length 64 [2024-10-14 03:31:06,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:06,108 INFO L471 AbstractCegarLoop]: Abstraction has 2598 states and 3909 transitions. [2024-10-14 03:31:06,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-14 03:31:06,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3909 transitions. [2024-10-14 03:31:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-14 03:31:06,109 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:06,109 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, 1, 1, 1] [2024-10-14 03:31:06,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 03:31:06,110 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:06,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:06,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1698265465, now seen corresponding path program 1 times [2024-10-14 03:31:06,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:06,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958787914] [2024-10-14 03:31:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:06,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:06,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:06,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958787914] [2024-10-14 03:31:06,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958787914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:06,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:06,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 03:31:06,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447387689] [2024-10-14 03:31:06,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:06,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 03:31:06,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:06,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 03:31:06,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 03:31:06,172 INFO L87 Difference]: Start difference. First operand 2598 states and 3909 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-14 03:31:06,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:06,278 INFO L93 Difference]: Finished difference Result 5133 states and 7787 transitions. [2024-10-14 03:31:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 03:31:06,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2024-10-14 03:31:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:06,294 INFO L225 Difference]: With dead ends: 5133 [2024-10-14 03:31:06,295 INFO L226 Difference]: Without dead ends: 3722 [2024-10-14 03:31:06,299 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 [2024-10-14 03:31:06,300 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 83 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 302 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 [2024-10-14 03:31:06,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 302 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:06,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2024-10-14 03:31:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3720. [2024-10-14 03:31:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3719 states have (on average 1.4990588867975263) internal successors, (5575), 3719 states have internal predecessors, (5575), 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) [2024-10-14 03:31:06,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 5575 transitions. [2024-10-14 03:31:06,448 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 5575 transitions. Word has length 65 [2024-10-14 03:31:06,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:06,448 INFO L471 AbstractCegarLoop]: Abstraction has 3720 states and 5575 transitions. [2024-10-14 03:31:06,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-14 03:31:06,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 5575 transitions. [2024-10-14 03:31:06,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-14 03:31:06,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:06,451 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:31:06,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 03:31:06,451 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:06,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:06,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1264465898, now seen corresponding path program 1 times [2024-10-14 03:31:06,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:06,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932344186] [2024-10-14 03:31:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:06,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-14 03:31:06,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:06,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932344186] [2024-10-14 03:31:06,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932344186] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:06,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:06,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 03:31:06,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414617424] [2024-10-14 03:31:06,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:06,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 03:31:06,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:06,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 03:31:06,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 03:31:06,669 INFO L87 Difference]: Start difference. First operand 3720 states and 5575 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-10-14 03:31:07,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:07,085 INFO L93 Difference]: Finished difference Result 12388 states and 18813 transitions. [2024-10-14 03:31:07,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 03:31:07,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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 90 [2024-10-14 03:31:07,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:07,130 INFO L225 Difference]: With dead ends: 12388 [2024-10-14 03:31:07,130 INFO L226 Difference]: Without dead ends: 10530 [2024-10-14 03:31:07,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-14 03:31:07,138 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 962 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:31:07,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 878 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:31:07,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10530 states. [2024-10-14 03:31:07,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10530 to 5544. [2024-10-14 03:31:07,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5544 states, 5543 states have (on average 1.4993685729749233) internal successors, (8311), 5543 states have internal predecessors, (8311), 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) [2024-10-14 03:31:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 8311 transitions. [2024-10-14 03:31:07,487 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 8311 transitions. Word has length 90 [2024-10-14 03:31:07,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:07,487 INFO L471 AbstractCegarLoop]: Abstraction has 5544 states and 8311 transitions. [2024-10-14 03:31:07,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-10-14 03:31:07,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 8311 transitions. [2024-10-14 03:31:07,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-14 03:31:07,491 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:07,491 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:31:07,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 03:31:07,491 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:07,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:07,492 INFO L85 PathProgramCache]: Analyzing trace with hash -974940887, now seen corresponding path program 1 times [2024-10-14 03:31:07,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:07,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900283075] [2024-10-14 03:31:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:07,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-14 03:31:07,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:07,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900283075] [2024-10-14 03:31:07,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900283075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:07,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:07,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 03:31:07,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742603768] [2024-10-14 03:31:07,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:07,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 03:31:07,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:07,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 03:31:07,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 03:31:07,705 INFO L87 Difference]: Start difference. First operand 5544 states and 8311 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2024-10-14 03:31:08,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:08,078 INFO L93 Difference]: Finished difference Result 14212 states and 21549 transitions. [2024-10-14 03:31:08,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 03:31:08,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 90 [2024-10-14 03:31:08,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:08,114 INFO L225 Difference]: With dead ends: 14212 [2024-10-14 03:31:08,114 INFO L226 Difference]: Without dead ends: 12354 [2024-10-14 03:31:08,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-14 03:31:08,121 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 929 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:31:08,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 885 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:31:08,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12354 states. [2024-10-14 03:31:08,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12354 to 7368. [2024-10-14 03:31:08,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7368 states, 7367 states have (on average 1.4995249083751867) internal successors, (11047), 7367 states have internal predecessors, (11047), 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) [2024-10-14 03:31:08,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7368 states to 7368 states and 11047 transitions. [2024-10-14 03:31:08,373 INFO L78 Accepts]: Start accepts. Automaton has 7368 states and 11047 transitions. Word has length 90 [2024-10-14 03:31:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:08,373 INFO L471 AbstractCegarLoop]: Abstraction has 7368 states and 11047 transitions. [2024-10-14 03:31:08,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2024-10-14 03:31:08,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7368 states and 11047 transitions. [2024-10-14 03:31:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-14 03:31:08,377 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:08,377 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:31:08,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 03:31:08,378 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:08,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:08,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1448669623, now seen corresponding path program 1 times [2024-10-14 03:31:08,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:08,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967414254] [2024-10-14 03:31:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:08,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 03:31:08,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:08,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967414254] [2024-10-14 03:31:08,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967414254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:08,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:08,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 03:31:08,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917181344] [2024-10-14 03:31:08,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:08,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 03:31:08,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:08,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 03:31:08,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 03:31:08,567 INFO L87 Difference]: Start difference. First operand 7368 states and 11047 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-10-14 03:31:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:09,012 INFO L93 Difference]: Finished difference Result 16036 states and 24285 transitions. [2024-10-14 03:31:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 03:31:09,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 90 [2024-10-14 03:31:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:09,042 INFO L225 Difference]: With dead ends: 16036 [2024-10-14 03:31:09,043 INFO L226 Difference]: Without dead ends: 14178 [2024-10-14 03:31:09,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-14 03:31:09,050 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 840 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:31:09,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 944 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:31:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14178 states. [2024-10-14 03:31:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14178 to 9192. [2024-10-14 03:31:09,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9192 states, 9191 states have (on average 1.4996191926884996) internal successors, (13783), 9191 states have internal predecessors, (13783), 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) [2024-10-14 03:31:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9192 states to 9192 states and 13783 transitions. [2024-10-14 03:31:09,420 INFO L78 Accepts]: Start accepts. Automaton has 9192 states and 13783 transitions. Word has length 90 [2024-10-14 03:31:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:09,421 INFO L471 AbstractCegarLoop]: Abstraction has 9192 states and 13783 transitions. [2024-10-14 03:31:09,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-10-14 03:31:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 9192 states and 13783 transitions. [2024-10-14 03:31:09,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-14 03:31:09,424 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:09,425 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:31:09,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 03:31:09,425 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:09,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:09,426 INFO L85 PathProgramCache]: Analyzing trace with hash -449504789, now seen corresponding path program 1 times [2024-10-14 03:31:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:09,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125961747] [2024-10-14 03:31:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:09,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 03:31:09,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:09,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125961747] [2024-10-14 03:31:09,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125961747] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:09,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:09,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 03:31:09,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573850782] [2024-10-14 03:31:09,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:09,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 03:31:09,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:09,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 03:31:09,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 03:31:09,629 INFO L87 Difference]: Start difference. First operand 9192 states and 13783 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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) [2024-10-14 03:31:09,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:09,991 INFO L93 Difference]: Finished difference Result 17860 states and 27021 transitions. [2024-10-14 03:31:09,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 03:31:09,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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 90 [2024-10-14 03:31:09,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:10,028 INFO L225 Difference]: With dead ends: 17860 [2024-10-14 03:31:10,029 INFO L226 Difference]: Without dead ends: 16002 [2024-10-14 03:31:10,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-14 03:31:10,042 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 864 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:31:10,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 1020 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:31:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16002 states. [2024-10-14 03:31:10,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16002 to 11016. [2024-10-14 03:31:10,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11016 states, 11015 states have (on average 1.499682251475261) internal successors, (16519), 11015 states have internal predecessors, (16519), 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) [2024-10-14 03:31:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11016 states to 11016 states and 16519 transitions. [2024-10-14 03:31:10,415 INFO L78 Accepts]: Start accepts. Automaton has 11016 states and 16519 transitions. Word has length 90 [2024-10-14 03:31:10,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:10,415 INFO L471 AbstractCegarLoop]: Abstraction has 11016 states and 16519 transitions. [2024-10-14 03:31:10,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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) [2024-10-14 03:31:10,416 INFO L276 IsEmpty]: Start isEmpty. Operand 11016 states and 16519 transitions. [2024-10-14 03:31:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-14 03:31:10,420 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:10,420 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:31:10,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 03:31:10,420 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:10,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:10,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1586866657, now seen corresponding path program 1 times [2024-10-14 03:31:10,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:10,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463369404] [2024-10-14 03:31:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:10,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:10,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:10,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463369404] [2024-10-14 03:31:10,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463369404] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:10,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:10,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 03:31:10,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630433764] [2024-10-14 03:31:10,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:10,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 03:31:10,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:10,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 03:31:10,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 03:31:10,538 INFO L87 Difference]: Start difference. First operand 11016 states and 16519 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-10-14 03:31:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:10,791 INFO L93 Difference]: Finished difference Result 21996 states and 33001 transitions. [2024-10-14 03:31:10,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 03:31:10,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2024-10-14 03:31:10,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:10,813 INFO L225 Difference]: With dead ends: 21996 [2024-10-14 03:31:10,813 INFO L226 Difference]: Without dead ends: 11018 [2024-10-14 03:31:10,827 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 [2024-10-14 03:31:10,827 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 66 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 290 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 [2024-10-14 03:31:10,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 290 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11018 states. [2024-10-14 03:31:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11018 to 11016. [2024-10-14 03:31:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11016 states, 11015 states have (on average 1.486609169314571) internal successors, (16375), 11015 states have internal predecessors, (16375), 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) [2024-10-14 03:31:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11016 states to 11016 states and 16375 transitions. [2024-10-14 03:31:11,242 INFO L78 Accepts]: Start accepts. Automaton has 11016 states and 16375 transitions. Word has length 91 [2024-10-14 03:31:11,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:11,243 INFO L471 AbstractCegarLoop]: Abstraction has 11016 states and 16375 transitions. [2024-10-14 03:31:11,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-10-14 03:31:11,243 INFO L276 IsEmpty]: Start isEmpty. Operand 11016 states and 16375 transitions. [2024-10-14 03:31:11,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-14 03:31:11,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:11,246 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:31:11,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 03:31:11,247 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:11,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash -187895232, now seen corresponding path program 1 times [2024-10-14 03:31:11,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:11,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593808684] [2024-10-14 03:31:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:11,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:11,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593808684] [2024-10-14 03:31:11,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593808684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:11,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:11,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 03:31:11,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815286196] [2024-10-14 03:31:11,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:11,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 03:31:11,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:11,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 03:31:11,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 03:31:11,394 INFO L87 Difference]: Start difference. First operand 11016 states and 16375 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-10-14 03:31:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:11,556 INFO L93 Difference]: Finished difference Result 16508 states and 24545 transitions. [2024-10-14 03:31:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 03:31:11,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2024-10-14 03:31:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:11,569 INFO L225 Difference]: With dead ends: 16508 [2024-10-14 03:31:11,570 INFO L226 Difference]: Without dead ends: 5530 [2024-10-14 03:31:11,584 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 [2024-10-14 03:31:11,585 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 60 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 268 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 [2024-10-14 03:31:11,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 268 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2024-10-14 03:31:11,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5528. [2024-10-14 03:31:11,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 5527 states have (on average 1.4718653880948074) internal successors, (8135), 5527 states have internal predecessors, (8135), 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) [2024-10-14 03:31:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 8135 transitions. [2024-10-14 03:31:11,793 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 8135 transitions. Word has length 91 [2024-10-14 03:31:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:11,793 INFO L471 AbstractCegarLoop]: Abstraction has 5528 states and 8135 transitions. [2024-10-14 03:31:11,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-10-14 03:31:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 8135 transitions. [2024-10-14 03:31:11,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-14 03:31:11,796 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:11,796 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:31:11,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 03:31:11,797 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:11,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash 318390113, now seen corresponding path program 1 times [2024-10-14 03:31:11,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:11,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763998524] [2024-10-14 03:31:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:11,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:11,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:11,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763998524] [2024-10-14 03:31:11,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763998524] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:11,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:11,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 03:31:11,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552120795] [2024-10-14 03:31:11,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:11,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 03:31:11,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:11,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 03:31:11,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 03:31:11,949 INFO L87 Difference]: Start difference. First operand 5528 states and 8135 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-10-14 03:31:12,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:12,039 INFO L93 Difference]: Finished difference Result 8276 states and 12185 transitions. [2024-10-14 03:31:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 03:31:12,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2024-10-14 03:31:12,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:12,046 INFO L225 Difference]: With dead ends: 8276 [2024-10-14 03:31:12,046 INFO L226 Difference]: Without dead ends: 2786 [2024-10-14 03:31:12,053 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 [2024-10-14 03:31:12,054 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 54 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 249 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 [2024-10-14 03:31:12,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 249 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:12,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2024-10-14 03:31:12,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2784. [2024-10-14 03:31:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2783 states have (on average 1.4556234279554439) internal successors, (4051), 2783 states have internal predecessors, (4051), 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) [2024-10-14 03:31:12,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4051 transitions. [2024-10-14 03:31:12,153 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4051 transitions. Word has length 91 [2024-10-14 03:31:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:12,154 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4051 transitions. [2024-10-14 03:31:12,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-10-14 03:31:12,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4051 transitions. [2024-10-14 03:31:12,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-14 03:31:12,156 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:12,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:31:12,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 03:31:12,156 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:12,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:12,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2024454910, now seen corresponding path program 1 times [2024-10-14 03:31:12,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:12,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030848713] [2024-10-14 03:31:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:12,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:13,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:13,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030848713] [2024-10-14 03:31:13,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030848713] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:31:13,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258910955] [2024-10-14 03:31:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:13,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:31:13,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:31:13,361 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) [2024-10-14 03:31:13,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 03:31:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:13,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 03:31:13,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:31:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:14,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:31:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:15,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258910955] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 03:31:15,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 03:31:15,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 8] total 23 [2024-10-14 03:31:15,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597979239] [2024-10-14 03:31:15,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 03:31:15,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 03:31:15,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 03:31:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2024-10-14 03:31:15,097 INFO L87 Difference]: Start difference. First operand 2784 states and 4051 transitions. Second operand has 23 states, 23 states have (on average 11.652173913043478) internal successors, (268), 23 states have internal predecessors, (268), 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) [2024-10-14 03:31:28,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:28,716 INFO L93 Difference]: Finished difference Result 43212 states and 62025 transitions. [2024-10-14 03:31:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2024-10-14 03:31:28,716 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.652173913043478) internal successors, (268), 23 states have internal predecessors, (268), 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 91 [2024-10-14 03:31:28,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:28,792 INFO L225 Difference]: With dead ends: 43212 [2024-10-14 03:31:28,793 INFO L226 Difference]: Without dead ends: 41314 [2024-10-14 03:31:28,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18552 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=5463, Invalid=38847, Unknown=0, NotChecked=0, Total=44310 [2024-10-14 03:31:28,815 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 8161 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8161 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-14 03:31:28,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8161 Valid, 2183 Invalid, 2758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-14 03:31:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41314 states. [2024-10-14 03:31:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41314 to 29040. [2024-10-14 03:31:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29040 states, 29039 states have (on average 1.4139260993835876) internal successors, (41059), 29039 states have internal predecessors, (41059), 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) [2024-10-14 03:31:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29040 states to 29040 states and 41059 transitions. [2024-10-14 03:31:29,853 INFO L78 Accepts]: Start accepts. Automaton has 29040 states and 41059 transitions. Word has length 91 [2024-10-14 03:31:29,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:29,854 INFO L471 AbstractCegarLoop]: Abstraction has 29040 states and 41059 transitions. [2024-10-14 03:31:29,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.652173913043478) internal successors, (268), 23 states have internal predecessors, (268), 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) [2024-10-14 03:31:29,854 INFO L276 IsEmpty]: Start isEmpty. Operand 29040 states and 41059 transitions. [2024-10-14 03:31:29,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-14 03:31:29,856 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:29,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:31:29,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 03:31:30,060 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,SelfDestructingSolverStorable17 [2024-10-14 03:31:30,061 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:30,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:30,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1528952311, now seen corresponding path program 1 times [2024-10-14 03:31:30,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:30,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348913160] [2024-10-14 03:31:30,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:30,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 03:31:30,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:30,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348913160] [2024-10-14 03:31:30,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348913160] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:30,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:30,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 03:31:30,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650605156] [2024-10-14 03:31:30,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:30,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 03:31:30,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:30,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 03:31:30,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 03:31:30,236 INFO L87 Difference]: Start difference. First operand 29040 states and 41059 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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) [2024-10-14 03:31:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:31,186 INFO L93 Difference]: Finished difference Result 52543 states and 74920 transitions. [2024-10-14 03:31:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 03:31:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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 92 [2024-10-14 03:31:31,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:31,261 INFO L225 Difference]: With dead ends: 52543 [2024-10-14 03:31:31,262 INFO L226 Difference]: Without dead ends: 48154 [2024-10-14 03:31:31,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-14 03:31:31,279 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 757 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:31:31,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1302 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:31:31,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48154 states. [2024-10-14 03:31:32,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48154 to 33497. [2024-10-14 03:31:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33497 states, 33496 states have (on average 1.4128552663004539) internal successors, (47325), 33496 states have internal predecessors, (47325), 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) [2024-10-14 03:31:32,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33497 states to 33497 states and 47325 transitions. [2024-10-14 03:31:32,322 INFO L78 Accepts]: Start accepts. Automaton has 33497 states and 47325 transitions. Word has length 92 [2024-10-14 03:31:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:32,323 INFO L471 AbstractCegarLoop]: Abstraction has 33497 states and 47325 transitions. [2024-10-14 03:31:32,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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) [2024-10-14 03:31:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 33497 states and 47325 transitions. [2024-10-14 03:31:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-14 03:31:32,326 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:32,326 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:31:32,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 03:31:32,326 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:32,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:32,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1783903383, now seen corresponding path program 1 times [2024-10-14 03:31:32,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:32,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526406757] [2024-10-14 03:31:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:32,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:32,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:32,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526406757] [2024-10-14 03:31:32,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526406757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:31:32,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:31:32,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 03:31:32,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142154707] [2024-10-14 03:31:32,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:31:32,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 03:31:32,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:32,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 03:31:32,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 03:31:32,429 INFO L87 Difference]: Start difference. First operand 33497 states and 47325 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-10-14 03:31:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:31:32,911 INFO L93 Difference]: Finished difference Result 48630 states and 68309 transitions. [2024-10-14 03:31:32,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 03:31:32,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2024-10-14 03:31:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:31:32,939 INFO L225 Difference]: With dead ends: 48630 [2024-10-14 03:31:32,939 INFO L226 Difference]: Without dead ends: 15171 [2024-10-14 03:31:32,969 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 [2024-10-14 03:31:32,970 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 40 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 244 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 [2024-10-14 03:31:32,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 244 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:31:32,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15171 states. [2024-10-14 03:31:33,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15171 to 13419. [2024-10-14 03:31:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13419 states, 13418 states have (on average 1.3903711432404233) internal successors, (18656), 13418 states have internal predecessors, (18656), 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) [2024-10-14 03:31:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 18656 transitions. [2024-10-14 03:31:33,356 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 18656 transitions. Word has length 93 [2024-10-14 03:31:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:31:33,356 INFO L471 AbstractCegarLoop]: Abstraction has 13419 states and 18656 transitions. [2024-10-14 03:31:33,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-10-14 03:31:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 18656 transitions. [2024-10-14 03:31:33,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-14 03:31:33,358 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:31:33,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:31:33,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-14 03:31:33,359 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:31:33,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:31:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash -650716099, now seen corresponding path program 1 times [2024-10-14 03:31:33,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:31:33,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686318521] [2024-10-14 03:31:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:33,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:31:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:33,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:31:33,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686318521] [2024-10-14 03:31:33,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686318521] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:31:33,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295222699] [2024-10-14 03:31:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:31:33,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:31:33,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:31:33,753 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) [2024-10-14 03:31:33,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 03:31:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:31:33,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-14 03:31:33,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:31:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:40,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:31:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:31:44,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295222699] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 03:31:44,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 03:31:44,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 20] total 44 [2024-10-14 03:31:44,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167823455] [2024-10-14 03:31:44,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 03:31:44,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-14 03:31:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:31:44,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-14 03:31:44,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1609, Unknown=0, NotChecked=0, Total=1892 [2024-10-14 03:31:44,039 INFO L87 Difference]: Start difference. First operand 13419 states and 18656 transitions. Second operand has 44 states, 44 states have (on average 5.931818181818182) internal successors, (261), 44 states have internal predecessors, (261), 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)