./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 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 ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.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 8ec94212d42d56ec4ec8ccfb1876cba582c3e983611a6a88d38f3b3edc8b85b6 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 22:26:06,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 22:26:06,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 22:26:06,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 22:26:06,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 22:26:06,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 22:26:06,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 22:26:06,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 22:26:06,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 22:26:06,357 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 22:26:06,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 22:26:06,358 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 22:26:06,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 22:26:06,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 22:26:06,360 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 22:26:06,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 22:26:06,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 22:26:06,360 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 22:26:06,361 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 22:26:06,361 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 22:26:06,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 22:26:06,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 22:26:06,362 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 22:26:06,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 22:26:06,362 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 22:26:06,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 22:26:06,362 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 22:26:06,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 22:26:06,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 22:26:06,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 22:26:06,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 22:26:06,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:26:06,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 22:26:06,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 22:26:06,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 22:26:06,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 22:26:06,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 22:26:06,365 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 22:26:06,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 22:26:06,366 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 22:26:06,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 22:26:06,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 22:26:06,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ec94212d42d56ec4ec8ccfb1876cba582c3e983611a6a88d38f3b3edc8b85b6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 22:26:06,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 22:26:06,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 22:26:06,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 22:26:06,640 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 22:26:06,640 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 22:26:06,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2023-11-22 22:26:07,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 22:26:07,818 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 22:26:07,819 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2023-11-22 22:26:07,826 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d014f6e3d/12498ceb82ab44c3b734b7c1eb743d4f/FLAG37fb3bd25 [2023-11-22 22:26:07,836 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d014f6e3d/12498ceb82ab44c3b734b7c1eb743d4f [2023-11-22 22:26:07,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 22:26:07,839 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 22:26:07,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 22:26:07,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 22:26:07,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 22:26:07,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:26:07" (1/1) ... [2023-11-22 22:26:07,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418d7993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:07, skipping insertion in model container [2023-11-22 22:26:07,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:26:07" (1/1) ... [2023-11-22 22:26:07,867 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 22:26:08,026 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c[11552,11565] [2023-11-22 22:26:08,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:26:08,042 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 22:26:08,093 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c[11552,11565] [2023-11-22 22:26:08,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:26:08,110 INFO L206 MainTranslator]: Completed translation [2023-11-22 22:26:08,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08 WrapperNode [2023-11-22 22:26:08,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 22:26:08,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 22:26:08,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 22:26:08,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 22:26:08,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,158 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 433 [2023-11-22 22:26:08,158 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 22:26:08,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 22:26:08,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 22:26:08,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 22:26:08,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,171 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,181 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-22 22:26:08,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 22:26:08,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 22:26:08,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 22:26:08,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 22:26:08,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (1/1) ... [2023-11-22 22:26:08,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:26:08,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:26:08,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 22:26:08,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 22:26:08,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 22:26:08,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 22:26:08,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 22:26:08,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 22:26:08,393 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 22:26:08,395 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 22:26:08,772 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 22:26:08,798 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 22:26:08,798 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-22 22:26:08,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:26:08 BoogieIcfgContainer [2023-11-22 22:26:08,799 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 22:26:08,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 22:26:08,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 22:26:08,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 22:26:08,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:26:07" (1/3) ... [2023-11-22 22:26:08,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cafcf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:26:08, skipping insertion in model container [2023-11-22 22:26:08,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:08" (2/3) ... [2023-11-22 22:26:08,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cafcf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:26:08, skipping insertion in model container [2023-11-22 22:26:08,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:26:08" (3/3) ... [2023-11-22 22:26:08,816 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2023-11-22 22:26:08,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 22:26:08,829 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 22:26:08,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 22:26:08,867 INFO L357 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, mHoare=true, 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;@18bb322c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 22:26:08,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 22:26:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 1.7946428571428572) internal successors, (201), 113 states have internal predecessors, (201), 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) [2023-11-22 22:26:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-22 22:26:08,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:08,885 INFO L195 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] [2023-11-22 22:26:08,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:08,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:08,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1320925119, now seen corresponding path program 1 times [2023-11-22 22:26:08,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:08,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918329406] [2023-11-22 22:26:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:08,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:09,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:09,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918329406] [2023-11-22 22:26:09,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918329406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:09,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:09,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 22:26:09,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799370777] [2023-11-22 22:26:09,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:09,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 22:26:09,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:09,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 22:26:09,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 22:26:09,150 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 1.7946428571428572) internal successors, (201), 113 states have internal predecessors, (201), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:09,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:09,199 INFO L93 Difference]: Finished difference Result 178 states and 313 transitions. [2023-11-22 22:26:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 22:26:09,202 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-22 22:26:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:09,210 INFO L225 Difference]: With dead ends: 178 [2023-11-22 22:26:09,210 INFO L226 Difference]: Without dead ends: 112 [2023-11-22 22:26:09,213 INFO L412 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 [2023-11-22 22:26:09,216 INFO L413 NwaCegarLoop]: 193 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, 193 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 [2023-11-22 22:26:09,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:09,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-22 22:26:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-22 22:26:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.7657657657657657) internal successors, (196), 111 states have internal predecessors, (196), 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) [2023-11-22 22:26:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 196 transitions. [2023-11-22 22:26:09,258 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 196 transitions. Word has length 34 [2023-11-22 22:26:09,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:09,259 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 196 transitions. [2023-11-22 22:26:09,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 196 transitions. [2023-11-22 22:26:09,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-22 22:26:09,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:09,262 INFO L195 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] [2023-11-22 22:26:09,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 22:26:09,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:09,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1285098435, now seen corresponding path program 1 times [2023-11-22 22:26:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:09,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103449478] [2023-11-22 22:26:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:09,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:09,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103449478] [2023-11-22 22:26:09,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103449478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:09,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:09,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:26:09,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527090866] [2023-11-22 22:26:09,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:26:09,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:26:09,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:26:09,516 INFO L87 Difference]: Start difference. First operand 112 states and 196 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:09,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:09,584 INFO L93 Difference]: Finished difference Result 178 states and 307 transitions. [2023-11-22 22:26:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:26:09,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-22 22:26:09,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:09,586 INFO L225 Difference]: With dead ends: 178 [2023-11-22 22:26:09,586 INFO L226 Difference]: Without dead ends: 112 [2023-11-22 22:26:09,586 INFO L412 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 [2023-11-22 22:26:09,587 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:09,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 555 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-22 22:26:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-22 22:26:09,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5765765765765767) internal successors, (175), 111 states have internal predecessors, (175), 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) [2023-11-22 22:26:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 175 transitions. [2023-11-22 22:26:09,597 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 175 transitions. Word has length 34 [2023-11-22 22:26:09,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:09,597 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 175 transitions. [2023-11-22 22:26:09,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 175 transitions. [2023-11-22 22:26:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-22 22:26:09,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:09,601 INFO L195 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] [2023-11-22 22:26:09,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 22:26:09,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:09,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:09,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1491954151, now seen corresponding path program 1 times [2023-11-22 22:26:09,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:09,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560922076] [2023-11-22 22:26:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:09,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:09,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560922076] [2023-11-22 22:26:09,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560922076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:09,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:09,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:09,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112051946] [2023-11-22 22:26:09,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:09,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:09,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:09,700 INFO L87 Difference]: Start difference. First operand 112 states and 175 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-11-22 22:26:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:09,745 INFO L93 Difference]: Finished difference Result 229 states and 374 transitions. [2023-11-22 22:26:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:09,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2023-11-22 22:26:09,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:09,750 INFO L225 Difference]: With dead ends: 229 [2023-11-22 22:26:09,751 INFO L226 Difference]: Without dead ends: 166 [2023-11-22 22:26:09,753 INFO L412 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 [2023-11-22 22:26:09,758 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 82 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:09,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 305 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-22 22:26:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 163. [2023-11-22 22:26:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5925925925925926) internal successors, (258), 162 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 258 transitions. [2023-11-22 22:26:09,781 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 258 transitions. Word has length 54 [2023-11-22 22:26:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:09,782 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 258 transitions. [2023-11-22 22:26:09,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-11-22 22:26:09,782 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 258 transitions. [2023-11-22 22:26:09,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-22 22:26:09,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:09,785 INFO L195 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] [2023-11-22 22:26:09,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 22:26:09,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:09,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:09,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2133310945, now seen corresponding path program 1 times [2023-11-22 22:26:09,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:09,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434844807] [2023-11-22 22:26:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:09,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:09,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:09,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434844807] [2023-11-22 22:26:09,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434844807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:09,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:09,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:09,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912401532] [2023-11-22 22:26:09,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:09,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:09,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:09,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:09,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:09,879 INFO L87 Difference]: Start difference. First operand 163 states and 258 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-22 22:26:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:09,900 INFO L93 Difference]: Finished difference Result 377 states and 614 transitions. [2023-11-22 22:26:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-22 22:26:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:09,902 INFO L225 Difference]: With dead ends: 377 [2023-11-22 22:26:09,902 INFO L226 Difference]: Without dead ends: 263 [2023-11-22 22:26:09,904 INFO L412 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 [2023-11-22 22:26:09,904 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 84 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:09,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 318 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:09,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-22 22:26:09,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2023-11-22 22:26:09,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.6124031007751938) internal successors, (416), 258 states have internal predecessors, (416), 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) [2023-11-22 22:26:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 416 transitions. [2023-11-22 22:26:09,914 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 416 transitions. Word has length 56 [2023-11-22 22:26:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:09,915 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 416 transitions. [2023-11-22 22:26:09,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-22 22:26:09,915 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 416 transitions. [2023-11-22 22:26:09,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-22 22:26:09,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:09,916 INFO L195 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] [2023-11-22 22:26:09,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 22:26:09,916 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:09,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:09,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1393501239, now seen corresponding path program 1 times [2023-11-22 22:26:09,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:09,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392260715] [2023-11-22 22:26:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:09,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392260715] [2023-11-22 22:26:09,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392260715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:09,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:09,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:09,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704831211] [2023-11-22 22:26:09,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:09,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:09,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:09,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:09,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:09,974 INFO L87 Difference]: Start difference. First operand 259 states and 416 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-22 22:26:09,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:09,995 INFO L93 Difference]: Finished difference Result 651 states and 1062 transitions. [2023-11-22 22:26:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:09,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-11-22 22:26:09,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:09,998 INFO L225 Difference]: With dead ends: 651 [2023-11-22 22:26:09,998 INFO L226 Difference]: Without dead ends: 441 [2023-11-22 22:26:09,999 INFO L412 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 [2023-11-22 22:26:10,000 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 78 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:10,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 319 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:10,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-22 22:26:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 435. [2023-11-22 22:26:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 1.6129032258064515) internal successors, (700), 434 states have internal predecessors, (700), 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) [2023-11-22 22:26:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 700 transitions. [2023-11-22 22:26:10,044 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 700 transitions. Word has length 58 [2023-11-22 22:26:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:10,046 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 700 transitions. [2023-11-22 22:26:10,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-22 22:26:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 700 transitions. [2023-11-22 22:26:10,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-22 22:26:10,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:10,048 INFO L195 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] [2023-11-22 22:26:10,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 22:26:10,048 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:10,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:10,049 INFO L85 PathProgramCache]: Analyzing trace with hash -691140561, now seen corresponding path program 1 times [2023-11-22 22:26:10,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:10,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513089791] [2023-11-22 22:26:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:10,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:10,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:10,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513089791] [2023-11-22 22:26:10,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513089791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:10,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:10,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:26:10,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824039881] [2023-11-22 22:26:10,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:10,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:26:10,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:26:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:26:10,145 INFO L87 Difference]: Start difference. First operand 435 states and 700 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-11-22 22:26:10,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:10,259 INFO L93 Difference]: Finished difference Result 1863 states and 3090 transitions. [2023-11-22 22:26:10,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:26:10,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2023-11-22 22:26:10,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:10,267 INFO L225 Difference]: With dead ends: 1863 [2023-11-22 22:26:10,267 INFO L226 Difference]: Without dead ends: 1477 [2023-11-22 22:26:10,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:26:10,269 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 695 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:10,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 983 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:26:10,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2023-11-22 22:26:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 772. [2023-11-22 22:26:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 1.6264591439688716) internal successors, (1254), 771 states have internal predecessors, (1254), 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) [2023-11-22 22:26:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1254 transitions. [2023-11-22 22:26:10,300 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1254 transitions. Word has length 60 [2023-11-22 22:26:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:10,305 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1254 transitions. [2023-11-22 22:26:10,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-11-22 22:26:10,306 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1254 transitions. [2023-11-22 22:26:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-22 22:26:10,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:10,306 INFO L195 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] [2023-11-22 22:26:10,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 22:26:10,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:10,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash -13242013, now seen corresponding path program 1 times [2023-11-22 22:26:10,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:10,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977851573] [2023-11-22 22:26:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:10,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:10,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:10,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977851573] [2023-11-22 22:26:10,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977851573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:10,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:10,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:26:10,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145926627] [2023-11-22 22:26:10,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:10,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:26:10,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:26:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:26:10,383 INFO L87 Difference]: Start difference. First operand 772 states and 1254 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) [2023-11-22 22:26:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:10,450 INFO L93 Difference]: Finished difference Result 2257 states and 3733 transitions. [2023-11-22 22:26:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:26:10,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 [2023-11-22 22:26:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:10,457 INFO L225 Difference]: With dead ends: 2257 [2023-11-22 22:26:10,457 INFO L226 Difference]: Without dead ends: 1534 [2023-11-22 22:26:10,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:26:10,460 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 305 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:10,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 560 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:10,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2023-11-22 22:26:10,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1144. [2023-11-22 22:26:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 1.636920384951881) internal successors, (1871), 1143 states have internal predecessors, (1871), 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) [2023-11-22 22:26:10,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1871 transitions. [2023-11-22 22:26:10,486 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1871 transitions. Word has length 61 [2023-11-22 22:26:10,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:10,487 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1871 transitions. [2023-11-22 22:26:10,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) [2023-11-22 22:26:10,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1871 transitions. [2023-11-22 22:26:10,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-22 22:26:10,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:10,488 INFO L195 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] [2023-11-22 22:26:10,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 22:26:10,489 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:10,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:10,489 INFO L85 PathProgramCache]: Analyzing trace with hash -467771752, now seen corresponding path program 1 times [2023-11-22 22:26:10,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:10,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491852217] [2023-11-22 22:26:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:10,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:10,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:10,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491852217] [2023-11-22 22:26:10,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491852217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:10,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:10,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:26:10,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982086833] [2023-11-22 22:26:10,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:10,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:26:10,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:10,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:26:10,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:26:10,590 INFO L87 Difference]: Start difference. First operand 1144 states and 1871 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) [2023-11-22 22:26:10,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:10,649 INFO L93 Difference]: Finished difference Result 3325 states and 5491 transitions. [2023-11-22 22:26:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:26:10,650 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 [2023-11-22 22:26:10,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:10,656 INFO L225 Difference]: With dead ends: 3325 [2023-11-22 22:26:10,657 INFO L226 Difference]: Without dead ends: 2230 [2023-11-22 22:26:10,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:26:10,659 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 305 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:10,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 520 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:10,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2023-11-22 22:26:10,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 1675. [2023-11-22 22:26:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 1.6356033452807646) internal successors, (2738), 1674 states have internal predecessors, (2738), 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) [2023-11-22 22:26:10,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2738 transitions. [2023-11-22 22:26:10,701 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2738 transitions. Word has length 62 [2023-11-22 22:26:10,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:10,701 INFO L495 AbstractCegarLoop]: Abstraction has 1675 states and 2738 transitions. [2023-11-22 22:26:10,701 INFO L496 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) [2023-11-22 22:26:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2738 transitions. [2023-11-22 22:26:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-22 22:26:10,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:10,705 INFO L195 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] [2023-11-22 22:26:10,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 22:26:10,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:10,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash -883755154, now seen corresponding path program 1 times [2023-11-22 22:26:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:10,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525405048] [2023-11-22 22:26:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:10,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:10,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:10,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525405048] [2023-11-22 22:26:10,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525405048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:10,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:10,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:10,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574987353] [2023-11-22 22:26:10,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:10,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:10,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:10,746 INFO L87 Difference]: Start difference. First operand 1675 states and 2738 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) [2023-11-22 22:26:10,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:10,779 INFO L93 Difference]: Finished difference Result 3502 states and 5726 transitions. [2023-11-22 22:26:10,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:10,780 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 [2023-11-22 22:26:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:10,786 INFO L225 Difference]: With dead ends: 3502 [2023-11-22 22:26:10,787 INFO L226 Difference]: Without dead ends: 2520 [2023-11-22 22:26:10,788 INFO L412 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 [2023-11-22 22:26:10,790 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 77 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 363 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 [2023-11-22 22:26:10,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 363 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:10,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2023-11-22 22:26:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2518. [2023-11-22 22:26:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2517 states have (on average 1.6170043702820818) internal successors, (4070), 2517 states have internal predecessors, (4070), 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) [2023-11-22 22:26:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 4070 transitions. [2023-11-22 22:26:10,838 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 4070 transitions. Word has length 63 [2023-11-22 22:26:10,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:10,838 INFO L495 AbstractCegarLoop]: Abstraction has 2518 states and 4070 transitions. [2023-11-22 22:26:10,838 INFO L496 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) [2023-11-22 22:26:10,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 4070 transitions. [2023-11-22 22:26:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-22 22:26:10,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:10,839 INFO L195 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] [2023-11-22 22:26:10,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 22:26:10,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:10,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:10,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1667840020, now seen corresponding path program 1 times [2023-11-22 22:26:10,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:10,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713141754] [2023-11-22 22:26:10,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:10,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:10,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:10,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713141754] [2023-11-22 22:26:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713141754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:10,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:10,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:26:10,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328279005] [2023-11-22 22:26:10,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:10,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:26:10,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:10,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:26:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:26:10,906 INFO L87 Difference]: Start difference. First operand 2518 states and 4070 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2023-11-22 22:26:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:11,005 INFO L93 Difference]: Finished difference Result 7596 states and 12391 transitions. [2023-11-22 22:26:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:26:11,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 [2023-11-22 22:26:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:11,019 INFO L225 Difference]: With dead ends: 7596 [2023-11-22 22:26:11,019 INFO L226 Difference]: Without dead ends: 5238 [2023-11-22 22:26:11,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:26:11,025 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 303 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:11,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 559 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:11,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2023-11-22 22:26:11,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 3862. [2023-11-22 22:26:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 1.615125615125615) internal successors, (6236), 3861 states have internal predecessors, (6236), 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) [2023-11-22 22:26:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 6236 transitions. [2023-11-22 22:26:11,125 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 6236 transitions. Word has length 63 [2023-11-22 22:26:11,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:11,125 INFO L495 AbstractCegarLoop]: Abstraction has 3862 states and 6236 transitions. [2023-11-22 22:26:11,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2023-11-22 22:26:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 6236 transitions. [2023-11-22 22:26:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-22 22:26:11,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:11,129 INFO L195 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] [2023-11-22 22:26:11,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 22:26:11,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:11,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1705470815, now seen corresponding path program 1 times [2023-11-22 22:26:11,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:11,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474418771] [2023-11-22 22:26:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:11,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:11,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474418771] [2023-11-22 22:26:11,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474418771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:11,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:11,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:11,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465488208] [2023-11-22 22:26:11,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:11,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:11,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:11,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:11,162 INFO L87 Difference]: Start difference. First operand 3862 states and 6236 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) [2023-11-22 22:26:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:11,268 INFO L93 Difference]: Finished difference Result 8546 states and 13858 transitions. [2023-11-22 22:26:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:11,268 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 [2023-11-22 22:26:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:11,284 INFO L225 Difference]: With dead ends: 8546 [2023-11-22 22:26:11,284 INFO L226 Difference]: Without dead ends: 5803 [2023-11-22 22:26:11,289 INFO L412 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 [2023-11-22 22:26:11,290 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 83 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 385 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 [2023-11-22 22:26:11,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 385 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5803 states. [2023-11-22 22:26:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5803 to 5801. [2023-11-22 22:26:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5800 states have (on average 1.6043103448275862) internal successors, (9305), 5800 states have internal predecessors, (9305), 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) [2023-11-22 22:26:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9305 transitions. [2023-11-22 22:26:11,429 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9305 transitions. Word has length 63 [2023-11-22 22:26:11,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:11,429 INFO L495 AbstractCegarLoop]: Abstraction has 5801 states and 9305 transitions. [2023-11-22 22:26:11,429 INFO L496 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) [2023-11-22 22:26:11,429 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9305 transitions. [2023-11-22 22:26:11,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-22 22:26:11,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:11,430 INFO L195 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] [2023-11-22 22:26:11,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 22:26:11,430 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:11,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:11,431 INFO L85 PathProgramCache]: Analyzing trace with hash 710370960, now seen corresponding path program 1 times [2023-11-22 22:26:11,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:11,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518135972] [2023-11-22 22:26:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:11,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:11,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:11,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518135972] [2023-11-22 22:26:11,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518135972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:11,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:11,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:11,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782466693] [2023-11-22 22:26:11,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:11,459 INFO L87 Difference]: Start difference. First operand 5801 states and 9305 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) [2023-11-22 22:26:11,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:11,603 INFO L93 Difference]: Finished difference Result 13147 states and 21344 transitions. [2023-11-22 22:26:11,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:11,603 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 [2023-11-22 22:26:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:11,623 INFO L225 Difference]: With dead ends: 13147 [2023-11-22 22:26:11,623 INFO L226 Difference]: Without dead ends: 8868 [2023-11-22 22:26:11,627 INFO L412 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 [2023-11-22 22:26:11,627 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 89 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 400 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 [2023-11-22 22:26:11,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 400 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8868 states. [2023-11-22 22:26:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8868 to 8866. [2023-11-22 22:26:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8866 states, 8865 states have (on average 1.5994359842075578) internal successors, (14179), 8865 states have internal predecessors, (14179), 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) [2023-11-22 22:26:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8866 states to 8866 states and 14179 transitions. [2023-11-22 22:26:11,798 INFO L78 Accepts]: Start accepts. Automaton has 8866 states and 14179 transitions. Word has length 63 [2023-11-22 22:26:11,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:11,798 INFO L495 AbstractCegarLoop]: Abstraction has 8866 states and 14179 transitions. [2023-11-22 22:26:11,798 INFO L496 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) [2023-11-22 22:26:11,799 INFO L276 IsEmpty]: Start isEmpty. Operand 8866 states and 14179 transitions. [2023-11-22 22:26:11,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-22 22:26:11,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:11,799 INFO L195 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] [2023-11-22 22:26:11,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 22:26:11,799 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:11,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2047190676, now seen corresponding path program 1 times [2023-11-22 22:26:11,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:11,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216302861] [2023-11-22 22:26:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:11,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:11,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:11,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216302861] [2023-11-22 22:26:11,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216302861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:11,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:11,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:26:11,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134317842] [2023-11-22 22:26:11,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:11,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:26:11,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:11,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:26:11,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:26:11,915 INFO L87 Difference]: Start difference. First operand 8866 states and 14179 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2023-11-22 22:26:12,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:12,118 INFO L93 Difference]: Finished difference Result 17671 states and 28274 transitions. [2023-11-22 22:26:12,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:26:12,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 [2023-11-22 22:26:12,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:12,136 INFO L225 Difference]: With dead ends: 17671 [2023-11-22 22:26:12,137 INFO L226 Difference]: Without dead ends: 8868 [2023-11-22 22:26:12,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:26:12,147 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 79 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:12,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 607 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8868 states. [2023-11-22 22:26:12,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8868 to 8866. [2023-11-22 22:26:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8866 states, 8865 states have (on average 1.585335589396503) internal successors, (14054), 8865 states have internal predecessors, (14054), 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) [2023-11-22 22:26:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8866 states to 8866 states and 14054 transitions. [2023-11-22 22:26:12,374 INFO L78 Accepts]: Start accepts. Automaton has 8866 states and 14054 transitions. Word has length 65 [2023-11-22 22:26:12,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:12,375 INFO L495 AbstractCegarLoop]: Abstraction has 8866 states and 14054 transitions. [2023-11-22 22:26:12,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2023-11-22 22:26:12,375 INFO L276 IsEmpty]: Start isEmpty. Operand 8866 states and 14054 transitions. [2023-11-22 22:26:12,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-22 22:26:12,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:12,376 INFO L195 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, 1, 1, 1] [2023-11-22 22:26:12,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 22:26:12,376 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:12,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:12,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2143907659, now seen corresponding path program 1 times [2023-11-22 22:26:12,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:12,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384842866] [2023-11-22 22:26:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:12,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:12,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:12,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384842866] [2023-11-22 22:26:12,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384842866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:12,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:12,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:26:12,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517599852] [2023-11-22 22:26:12,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:12,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:26:12,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:12,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:26:12,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:26:12,510 INFO L87 Difference]: Start difference. First operand 8866 states and 14054 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-22 22:26:12,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:12,806 INFO L93 Difference]: Finished difference Result 25421 states and 40446 transitions. [2023-11-22 22:26:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:26:12,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2023-11-22 22:26:12,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:12,832 INFO L225 Difference]: With dead ends: 25421 [2023-11-22 22:26:12,833 INFO L226 Difference]: Without dead ends: 16618 [2023-11-22 22:26:12,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:26:12,842 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 229 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:12,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 465 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16618 states. [2023-11-22 22:26:13,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16618 to 16616. [2023-11-22 22:26:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16616 states, 16615 states have (on average 1.57008727053867) internal successors, (26087), 16615 states have internal predecessors, (26087), 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) [2023-11-22 22:26:13,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16616 states to 16616 states and 26087 transitions. [2023-11-22 22:26:13,194 INFO L78 Accepts]: Start accepts. Automaton has 16616 states and 26087 transitions. Word has length 68 [2023-11-22 22:26:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:13,194 INFO L495 AbstractCegarLoop]: Abstraction has 16616 states and 26087 transitions. [2023-11-22 22:26:13,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-22 22:26:13,195 INFO L276 IsEmpty]: Start isEmpty. Operand 16616 states and 26087 transitions. [2023-11-22 22:26:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-22 22:26:13,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:13,196 INFO L195 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, 1, 1, 1, 1] [2023-11-22 22:26:13,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 22:26:13,196 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:13,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:13,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2051147253, now seen corresponding path program 1 times [2023-11-22 22:26:13,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:13,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611486656] [2023-11-22 22:26:13,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:13,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:13,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611486656] [2023-11-22 22:26:13,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611486656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:13,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:13,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:26:13,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399169017] [2023-11-22 22:26:13,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:13,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:26:13,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:13,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:26:13,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:26:13,384 INFO L87 Difference]: Start difference. First operand 16616 states and 26087 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-11-22 22:26:13,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:13,515 INFO L93 Difference]: Finished difference Result 17704 states and 27536 transitions. [2023-11-22 22:26:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:26:13,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 69 [2023-11-22 22:26:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:13,542 INFO L225 Difference]: With dead ends: 17704 [2023-11-22 22:26:13,542 INFO L226 Difference]: Without dead ends: 17702 [2023-11-22 22:26:13,549 INFO L412 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 [2023-11-22 22:26:13,550 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 1 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:13,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 500 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17702 states. [2023-11-22 22:26:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17702 to 17340. [2023-11-22 22:26:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17340 states, 17339 states have (on average 1.545763884883788) internal successors, (26802), 17339 states have internal predecessors, (26802), 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) [2023-11-22 22:26:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17340 states to 17340 states and 26802 transitions. [2023-11-22 22:26:13,894 INFO L78 Accepts]: Start accepts. Automaton has 17340 states and 26802 transitions. Word has length 69 [2023-11-22 22:26:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:13,894 INFO L495 AbstractCegarLoop]: Abstraction has 17340 states and 26802 transitions. [2023-11-22 22:26:13,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-11-22 22:26:13,894 INFO L276 IsEmpty]: Start isEmpty. Operand 17340 states and 26802 transitions. [2023-11-22 22:26:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 22:26:13,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:13,896 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:26:13,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 22:26:13,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:13,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:13,896 INFO L85 PathProgramCache]: Analyzing trace with hash -180411799, now seen corresponding path program 1 times [2023-11-22 22:26:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:13,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870481733] [2023-11-22 22:26:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:13,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 22:26:13,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:13,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870481733] [2023-11-22 22:26:13,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870481733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:13,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:13,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:13,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992147068] [2023-11-22 22:26:13,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:13,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:13,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:13,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:13,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:13,947 INFO L87 Difference]: Start difference. First operand 17340 states and 26802 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2023-11-22 22:26:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:14,311 INFO L93 Difference]: Finished difference Result 51777 states and 79958 transitions. [2023-11-22 22:26:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:14,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-22 22:26:14,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:14,367 INFO L225 Difference]: With dead ends: 51777 [2023-11-22 22:26:14,368 INFO L226 Difference]: Without dead ends: 34491 [2023-11-22 22:26:14,377 INFO L412 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 [2023-11-22 22:26:14,378 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 110 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:14,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 389 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:14,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34491 states. [2023-11-22 22:26:14,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34491 to 34489. [2023-11-22 22:26:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34489 states, 34488 states have (on average 1.5312282533054975) internal successors, (52809), 34488 states have internal predecessors, (52809), 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) [2023-11-22 22:26:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34489 states to 34489 states and 52809 transitions. [2023-11-22 22:26:15,053 INFO L78 Accepts]: Start accepts. Automaton has 34489 states and 52809 transitions. Word has length 95 [2023-11-22 22:26:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:15,054 INFO L495 AbstractCegarLoop]: Abstraction has 34489 states and 52809 transitions. [2023-11-22 22:26:15,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2023-11-22 22:26:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 34489 states and 52809 transitions. [2023-11-22 22:26:15,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 22:26:15,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:15,056 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:26:15,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 22:26:15,057 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:15,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1886153126, now seen corresponding path program 1 times [2023-11-22 22:26:15,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:15,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142851080] [2023-11-22 22:26:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:15,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 22:26:15,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:15,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142851080] [2023-11-22 22:26:15,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142851080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:15,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:15,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:15,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121809074] [2023-11-22 22:26:15,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:15,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:15,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:15,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:15,124 INFO L87 Difference]: Start difference. First operand 34489 states and 52809 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-22 22:26:15,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:15,928 INFO L93 Difference]: Finished difference Result 102999 states and 157563 transitions. [2023-11-22 22:26:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:15,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-22 22:26:15,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:16,053 INFO L225 Difference]: With dead ends: 102999 [2023-11-22 22:26:16,053 INFO L226 Difference]: Without dead ends: 68600 [2023-11-22 22:26:16,095 INFO L412 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 [2023-11-22 22:26:16,096 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 96 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:16,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 374 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:16,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68600 states. [2023-11-22 22:26:17,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68600 to 68598. [2023-11-22 22:26:17,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68598 states, 68597 states have (on average 1.5165240462410892) internal successors, (104029), 68597 states have internal predecessors, (104029), 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) [2023-11-22 22:26:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68598 states to 68598 states and 104029 transitions. [2023-11-22 22:26:17,436 INFO L78 Accepts]: Start accepts. Automaton has 68598 states and 104029 transitions. Word has length 95 [2023-11-22 22:26:17,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:17,437 INFO L495 AbstractCegarLoop]: Abstraction has 68598 states and 104029 transitions. [2023-11-22 22:26:17,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-22 22:26:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 68598 states and 104029 transitions. [2023-11-22 22:26:17,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 22:26:17,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:17,442 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:26:17,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 22:26:17,443 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:17,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:17,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1413714315, now seen corresponding path program 1 times [2023-11-22 22:26:17,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:17,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883031675] [2023-11-22 22:26:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:17,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:17,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:17,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883031675] [2023-11-22 22:26:17,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883031675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:17,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:17,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:17,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821125274] [2023-11-22 22:26:17,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:17,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:17,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:17,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:17,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:17,631 INFO L87 Difference]: Start difference. First operand 68598 states and 104029 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2023-11-22 22:26:18,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:18,922 INFO L93 Difference]: Finished difference Result 204906 states and 310457 transitions. [2023-11-22 22:26:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:18,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-22 22:26:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:19,140 INFO L225 Difference]: With dead ends: 204906 [2023-11-22 22:26:19,140 INFO L226 Difference]: Without dead ends: 136480 [2023-11-22 22:26:19,184 INFO L412 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 [2023-11-22 22:26:19,185 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 111 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:19,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 388 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136480 states. [2023-11-22 22:26:21,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136480 to 136478. [2023-11-22 22:26:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136478 states, 136477 states have (on average 1.5017255654798978) internal successors, (204951), 136477 states have internal predecessors, (204951), 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) [2023-11-22 22:26:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136478 states to 136478 states and 204951 transitions. [2023-11-22 22:26:21,944 INFO L78 Accepts]: Start accepts. Automaton has 136478 states and 204951 transitions. Word has length 95 [2023-11-22 22:26:21,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:21,946 INFO L495 AbstractCegarLoop]: Abstraction has 136478 states and 204951 transitions. [2023-11-22 22:26:21,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2023-11-22 22:26:21,946 INFO L276 IsEmpty]: Start isEmpty. Operand 136478 states and 204951 transitions. [2023-11-22 22:26:21,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 22:26:21,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:21,969 INFO L195 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, 1, 1, 1, 1] [2023-11-22 22:26:21,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 22:26:21,969 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:21,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:21,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1398195597, now seen corresponding path program 1 times [2023-11-22 22:26:21,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:21,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788429649] [2023-11-22 22:26:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:21,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:22,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:22,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788429649] [2023-11-22 22:26:22,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788429649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:22,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:22,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:22,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681367376] [2023-11-22 22:26:22,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:22,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:22,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:22,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:22,047 INFO L87 Difference]: Start difference. First operand 136478 states and 204951 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2023-11-22 22:26:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:24,722 INFO L93 Difference]: Finished difference Result 407686 states and 611662 transitions. [2023-11-22 22:26:24,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:24,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-22 22:26:24,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:25,354 INFO L225 Difference]: With dead ends: 407686 [2023-11-22 22:26:25,354 INFO L226 Difference]: Without dead ends: 271560 [2023-11-22 22:26:25,433 INFO L412 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 [2023-11-22 22:26:25,434 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 130 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:25,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 405 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:25,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271560 states. [2023-11-22 22:26:29,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271560 to 271558. [2023-11-22 22:26:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271558 states, 271557 states have (on average 1.4868333351745675) internal successors, (403760), 271557 states have internal predecessors, (403760), 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) [2023-11-22 22:26:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271558 states to 271558 states and 403760 transitions. [2023-11-22 22:26:30,751 INFO L78 Accepts]: Start accepts. Automaton has 271558 states and 403760 transitions. Word has length 95 [2023-11-22 22:26:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:30,752 INFO L495 AbstractCegarLoop]: Abstraction has 271558 states and 403760 transitions. [2023-11-22 22:26:30,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2023-11-22 22:26:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 271558 states and 403760 transitions. [2023-11-22 22:26:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 22:26:30,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:30,764 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-11-22 22:26:30,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-22 22:26:30,765 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:30,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:30,765 INFO L85 PathProgramCache]: Analyzing trace with hash 500802319, now seen corresponding path program 1 times [2023-11-22 22:26:30,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:30,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743490304] [2023-11-22 22:26:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:30,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:30,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:30,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743490304] [2023-11-22 22:26:30,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743490304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:30,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:30,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:30,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213208976] [2023-11-22 22:26:30,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:30,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:30,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:30,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:30,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:30,824 INFO L87 Difference]: Start difference. First operand 271558 states and 403760 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2023-11-22 22:26:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:34,161 INFO L93 Difference]: Finished difference Result 408014 states and 605322 transitions. [2023-11-22 22:26:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:34,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-22 22:26:34,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:34,709 INFO L225 Difference]: With dead ends: 408014 [2023-11-22 22:26:34,709 INFO L226 Difference]: Without dead ends: 271856 [2023-11-22 22:26:34,795 INFO L412 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 [2023-11-22 22:26:34,796 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 101 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:34,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 442 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271856 states. [2023-11-22 22:26:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271856 to 271854. [2023-11-22 22:26:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271854 states, 271853 states have (on average 1.474046635497861) internal successors, (400724), 271853 states have internal predecessors, (400724), 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) [2023-11-22 22:26:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271854 states to 271854 states and 400724 transitions. [2023-11-22 22:26:40,256 INFO L78 Accepts]: Start accepts. Automaton has 271854 states and 400724 transitions. Word has length 95 [2023-11-22 22:26:40,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:40,257 INFO L495 AbstractCegarLoop]: Abstraction has 271854 states and 400724 transitions. [2023-11-22 22:26:40,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2023-11-22 22:26:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 271854 states and 400724 transitions. [2023-11-22 22:26:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 22:26:40,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:40,269 INFO L195 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, 1, 1, 1, 1] [2023-11-22 22:26:40,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 22:26:40,269 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:40,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:40,269 INFO L85 PathProgramCache]: Analyzing trace with hash -510314931, now seen corresponding path program 1 times [2023-11-22 22:26:40,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:40,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974945088] [2023-11-22 22:26:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:40,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:40,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:40,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974945088] [2023-11-22 22:26:40,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974945088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:40,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:40,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:40,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81563098] [2023-11-22 22:26:40,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:40,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:40,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:40,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:40,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:40,310 INFO L87 Difference]: Start difference. First operand 271854 states and 400724 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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)